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<SEC-DOCUMENT>0001019687-05-001518.txt : 20050611
<SEC-HEADER>0001019687-05-001518.hdr.sgml : 20050611
<ACCEPTANCE-DATETIME>20050525202422
ACCESSION NUMBER:		0001019687-05-001518
CONFORMED SUBMISSION TYPE:	S-3/A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20050526
DATE AS OF CHANGE:		20050525

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERICAN TECHNOLOGY CORP /DE/
		CENTRAL INDEX KEY:			0000924383
		STANDARD INDUSTRIAL CLASSIFICATION:	HOUSEHOLD AUDIO & VIDEO EQUIPMENT [3651]
		IRS NUMBER:				870361799
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		S-3/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-122264
		FILM NUMBER:		05858049

	BUSINESS ADDRESS:	
		STREET 1:		13114 EVENING CREEK DRIVE SOUTH
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92128
		BUSINESS PHONE:		6196792114

	MAIL ADDRESS:	
		STREET 1:		13114 EVENING CREEK DRIVE SOUTH
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92128
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3/A
<SEQUENCE>1
<FILENAME>atco_s3a3-051205.htm
<DESCRIPTION>ATCO, S-3 AMENDMENT #3
<TEXT>
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<P><FONT face="Times New Roman, Times, Serif" size=2><B><a href="#toc">Table of Contents</a></B> &nbsp;<BR>
</FONT></P>




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    <TD width="72%" vAlign=top><font size="2" face="Times New Roman, Times, serif">AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY
    25,&nbsp; 2005</font></TD>
    <TD width="28%" vAlign=top>
    <p align="right"><font size="2" face="Times New Roman, Times, serif">
    REGISTRATION NO. 333-122264</font></TD>
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<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><font size="4">UNITED STATES<BR>
  SECURITIES AND EXCHANGE COMMISSION</font><BR>
WASHINGTON, D.C. 20549 </B></FONT></P>
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<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>FORM S-3/A<br>
</B></FONT><FONT face="Times New Roman, Times, Serif" size=2><B>(Amendment No. 3)</B></FONT></P>




<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>REGISTRATION STATEMENT<BR>UNDER<BR>THE SECURITIES ACT OF 1933 </B></FONT></P>

<HR align=center width="120" SIZE=1 color=black>

<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><font size="5">AMERICAN TECHNOLOGY CORPORATION</font></B> <BR>
(Exact Name of Registrant as Specified in Its Charter)</FONT></P>
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<P style="TEXT-ALIGN: center" align=center>Delaware<BR>(State or Other Jurisdiction of<BR>Incorporation or Organization)</P></TD>
<TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 40%; PADDING-TOP: 0in" vAlign=top width="40%">
<P style="TEXT-ALIGN: center" align=center>13114 Evening Creek Drive South<BR>San Diego, California 92128<BR>(858) 679-2114<BR>(Address, Including Zip Code, and Telephone<BR>Number, Including Area Code, of<BR>Registrant&#146;s Principal Executive Offices)</P></TD>
<TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 30%; PADDING-TOP: 0in" vAlign=top width="30%">
<P style="TEXT-ALIGN: center" align=center>87-0361799<BR>(I.R.S. Employer<BR>Identification Number)</P></TD></TR></TABLE>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2>Kalani Jones<BR>President and Chief Operating Officer<BR>AMERICAN TECHNOLOGY CORPORATION<BR>13114 Evening Creek Drive South<BR>San Diego, California 92128<BR>(858) 679-2114<BR>(Name, Address, Including Zip Code, and Telephone Number,<BR>Including Area Code, of Agent for Service)</FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2>Copy To:<BR>John D. Tishler, Esq.<BR>Steffani M. Stevens, Esq.<BR>SHEPPARD MULLIN RICHTER &amp; HAMPTON LLP<BR>12544 High Bluff Drive, Suite 300<BR>San Diego, California 92130-3051<BR>(858) 720-8900<BR>FAX: (858) 509-3691</FONT></P>
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<P style="PAGE-BREAK-BEFORE: always">
<P align=center><FONT face="Times New Roman, Times, Serif" size=2>APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:<BR>From time to time after this registration statement becomes effective </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If the only securities being registered
on this form are being offered pursuant to dividend or interest reinvestment plans, please check
the following box. <font size="3" face="Wingdings">o</font></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If any of the securities being registered
on this form are to be offered on a delayed or continuous basis pursuant to Rule&nbsp;415 under the
Securities Act of 1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. <font size="3" face="Wingdings">x</font></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If this form is filed to register additional
securities for an offering pursuant to Rule&nbsp;462(b) under the Securities Act, please check the
following box and list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. <font size="3" face="Wingdings">o</font></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If this form is a post-effective amendment
filed pursuant to Rule&nbsp;462(c) under the Securities Act, check the following box and list the
Securities Act registration statement number of the earlier effective registration statement for
the same offering. <font size="3" face="Wingdings">o</font></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If delivery of the prospectus is expected
to be made pursuant to Rule&nbsp;434, please check the following box. <font size="3" face="Wingdings">o</font></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>The registrant hereby amends this registration statement on such date or dates as may be necessary
to delay its effective date until the registrant shall file a further amendment which specifically
states that this registration statement shall thereafter become effective in accordance with Section
8(a) of the Securities Act of 1933 or until this registration statement shall become effective on
such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.</B> &nbsp;</FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2></FONT></P>
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<P style="PAGE-BREAK-BEFORE: always">
<P><FONT face="Times New Roman, Times, Serif" size=2>THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. THE SELLING STOCKHOLDER MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE SECURITIES AND EXCHANGE
COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER TO SELL THESE SECURITIES AND THE SELLING
STOCKHOLDER IS NOT SOLICITING OFFERS TO BUY THESE SECURITIES IN ANY STATE WHERE THE OFFER OR SALE
IS NOT PERMITTED.</FONT></P>



<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>SUBJECT TO COMPLETION, DATED MAY
25, 2005 </B></FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2><B>PROSPECTUS </B></FONT></P>
<p></p>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>AMERICAN TECHNOLOGY CORPORATION </B></FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>3,959,782 SHARES<BR>COMMON STOCK </B></FONT></P>
<HR align=center width="135" color=black noShade SIZE=1>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus may be used only for the
resale of up to 3,959,782 shares of common stock by Kingsbridge Capital Limited. Kingsbridge is sometimes
referred to in this prospectus as the selling stockholder. Kingsbridge may acquire these shares from
us pursuant to a Committed Equity Financing Facility and upon exercise of a warrant that we issued
to Kingsbridge in connection with the Committed Equity Financing Facility. Kingsbridge will receive
all of the proceeds from the sale of the shares of common stock under this prospectus and we will
pay all underwriting discounts and selling commissions, if any, applicable to the sale of such shares.
We will pay the expenses incurred in registering the shares, including legal and accounting fees.
However, we will receive the proceeds from the sale of shares of common stock to Kingsbridge under
the Committed Equity Financing Facility or upon the exercise of the warrant. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Kingsbridge is an &#147;underwriter&#148;
within the meaning of the Securities Act of 1933 with respect to this offering. </FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our common stock is quoted on the NASDAQ
SmallCap Market under the symbol &#147;ATCO.&#148; On May 24, 2005, the last reported sale price
for our common stock on the NASDAQ SmallCap Market was $6.11 per share. </FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>The securities offered involve a high degree of risk. See &#147;Risk Factors&#148; commencing on page
3 of this prospectus for a discussion of these risks.</B> &nbsp;</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Neither the Securities and Exchange Commission nor any state securities commission has approved or
disapproved of these securities or determined if this prospectus is truthful or complete. Any representation
to the contrary is a criminal offense.</B> &nbsp;</FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2>The date of this prospectus ________________, 2005 </FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2></FONT></P>
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<P style="PAGE-BREAK-BEFORE: always">
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>TABLE OF CONTENTS</B></FONT><a name="toc"></a></P>
<TABLE WIDTH=70% BORDER=0 align="center" CELLPADDING=0 CELLSPACING=0>
  <TR VALIGN=Bottom>
    <TH><FONT FACE="Times New Roman, Times, serif" SIZE=1></FONT></TH>
    <TH><FONT FACE="Times New Roman, Times, serif" SIZE=1>Page</FONT></TH>
    <TH><font size="1" face="Times New Roman, Times, serif"></font></TH>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD ALIGN=RIGHT><HR WIDTH=100% SIZE=1 COLOR=BLACK NOSHADE></TD>
    <TD WIDTH=2% ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a1">The Company</a></FONT></TD>
    <TD WIDTH=3% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a2">The Offering</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a3">Risk Factors</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>3</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a4">Special Note Regarding Forward Looking Statements</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>15</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>

  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a5">Use of Proceeds</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>15</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a6">The Committed Equity Financing Facility</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>16</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a7">Selling Stockholder</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>20</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a8">Plan of Distribution</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>20</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a9">Legal Matters</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>22</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a10">Experts</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>22</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a11">Where You Can Find More Information</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>22</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD height="22" ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><a href="#a12">Information Incorporated by Reference</a></FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>23</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD height="22" ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
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<HR align=center width="135" color=black noShade SIZE=1>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>INFORMATION CONTAINED IN THIS PROSPECTUS </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>You should rely only on the information we have provided or incorporated by reference in this prospectus.
Neither we nor the selling stockholder have authorized anyone to provide you with additional or different
information. The selling stockholder is not making an offer of these securities in any jurisdiction where the offer is not permitted. You should assume that the information in this prospectus is accurate
only as of the date on the front of the document and that any information we have incorporated by reference is accurate only as of the date of the document incorporated by reference.</B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In this prospectus, unless otherwise indicated,
&#147;our company,&#148; &#147;we,&#148; &#147;us&#148; or &#147;our&#148; refer to American Technology
Corporation. </FONT></P>


<hr noshade size=5>
<P style="PAGE-BREAK-BEFORE: always">
<P><a href="#toc"><FONT face="Times New Roman, Times, Serif" size=2><B><U>Table of Contents</U></B></FONT></a><FONT face="Times New Roman, Times, Serif" size=2> &nbsp;</FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a1"></a>THE COMPANY</B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are an innovator of proprietary sound
reproduction technologies and products. We believe our innovative proprietary sound technologies
provide us a significant competitive advantage in our principal markets. We believe we are the leader
in developing and commercializing parametric loudspeakers, branded as HyperSonic&#174; sound or HSS&#174;.
We believe we are also the leader in developing and commercializing high intensity directed acoustical
devices, branded as our Long Range Acoustic Device or LRAD&#153;. We have filed over 70 patent applications
in the United States, and over 90 patent applications internationally covering our various sound
technologies and products. </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We make significant investments in research
and development to expand our technology and product portfolio. We are expanding our LRAD product
family, introducing a new NeoPlanar product line for emergency notification and general announcement
markets which require high intelligibility, and utilizing our products to provide solutions for
difficult acoustic challenges. We offer our products for sale worldwide, but expect our largest markets
to be the United States, Europe and Asia. </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our four major products from our technology
portfolio are listed below. </FONT></P>


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<TR align="left" valign="top">
  <TD width="30">
<P><font size="2" face="Times New Roman, Times, serif">&#149; </font></P></TD>
<TD>
<P><font size="2" face="Times New Roman, Times, serif">Our HyperSonic sound, or HSS, technology is a new parametric speaker technology that creates sound &#147;in the air.&#148; Sound is generated along an air column using ultrasonic frequencies, which
are those above the normal range of hearing. The HSS sound beam is highly directional and maintains
sound volume over longer distances than traditional loudspeakers. We believe our substantial intellectual
property portfolio and pioneering HSS products support our leadership position in the field of parametric
non-linear acoustics for sound reproduction, as we continue to improve and release
higher reliability, lower distortion and higher output
level models of our HSS products. </font></P>
</TD></TR>
<TR align="left" valign="top">
  <TD width="30">&nbsp;</TD>
  <TD>&nbsp;</TD>
</TR>
<TR align="left" valign="top">
  <TD width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></TD>
  <TD><font size="2" face="Times New Roman, Times, serif">Our Long Range Acoustic Device, or LRAD, technology produces variable
intensity acoustical sound intended for use in long-range delivery of directional sound information, which is
effectively a supercharged megaphone. LRAD products are designed and used as directed long-range hailing and
warning systems by both government and commercial customers. We believe our LRAD product innovation, our growing
engineering capabilities, and our manufacturing and marketing competencies have established us as the leader in this
new marketplace. We are marketing LRAD throughout the U.S. Department of Defense as &#147;The Sound of Force
Protection&#153;&#148;, and our markets are expanding to include law enforcement and commercial customers with significant security
concerns. In fiscal 2004, we developed a remote controlled pan/tilt version of LRAD for critical infrastructure force
protection applications, and we demonstrated our competency to engineer additional new sound solutions for the U.S. Department of Defense.
We plan to introduce in the summer of 2005 a new Medium Range Acoustic Device (MRAD&#153;).  MRAD will be about half
the size and weight of LRAD, and provide effective hailing and warning at approximately half the range
of LRAD.  MRAD is expected to be particularly effective on armored
vehicles for urban warfare, shorter-range check points and access denial, plus
  multiple applications for local, national and international law enforcement.</font></TD>
</TR>
</TABLE>


<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
<TR align="left" valign="top">
  <TD width="30">&nbsp;</TD>
  <TD>&nbsp;</TD>
</TR>
<TR align="left" valign="top">
  <TD width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></TD>
  <TD><font size="2" face="Times New Roman, Times, serif">Our NeoPlanar&#174; technology is a thin film magnetic speaker that produces sound of high quality, low distortion and high volume. NeoPlanar applications include high-end sound, emergency notification and public address systems. In fiscal 2004, we began marketing NeoPlanar for use in large indoor spaces and in outdoor environments for emergency notification. NeoPlanar offers customers a new capability by delivering remarkably intelligible communications in difficult spaces such as aircraft hangar bays and at distances up to one-half mile. </font></TD>
</TR>
<TR align="left" valign="top">
  <TD width="30">&nbsp;</TD>
  <TD>&nbsp;</TD>
</TR>
<TR align="left" valign="top">
  <TD width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></TD>
  <TD><font size="2" face="Times New Roman, Times, serif">Our SoundCluster&#153; technology is a new multi-element speaker cluster optimized for even sound coverage over large areas. Our SoundCluster product offers an improved level of intelligibility and clarity in high ambient noise environments. The SoundCluster satisfies flight deck safety and large area emergency notification requirements. The flexible and ruggedized SoundCluster design lends itself to installation in harsh environments, where conventional speakers may fail. During fiscal 2004, we deployed the first SoundCluster for use on a U.S. naval warship. </font></TD>
</TR>

</TABLE>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-1-</FONT></P>
<HR noShade SIZE=5>

<P style="PAGE-BREAK-BEFORE: always">
<P><a href="#toc"><FONT face="Times New Roman, Times, Serif" size=2><B><U>Table of Contents</U></B></FONT></a><FONT face="Times New Roman, Times, Serif" size=2><B><U></U></B> &nbsp;</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We believe we are uniquely equipped to
provide our technologies and products in rapidly growing markets for new sound applications not currently
served by conventional sound devices and as an alternative to conventional loudspeakers. We believe
market factors such as the rapid growth of plasma and flat panel screens offer significant growth
opportunities for our HSS focused sound solutions. We also believe that the growth in defense and
homeland security and related protection spending by commercial customers provides a growing market
for our sound products to be used for intelligible communication over long distances. </FONT></P>


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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our primary products
sold to date have been LRAD and HSS products. These products are currently manufactured
for us by Pemstar, Inc., an established contract manufacturer with multiple locations
worldwide. Our sales have been highly dependent on large orders from a few customers. We
target our products for sale worldwide, but expect the largest markets to be the U.S.,
Europe and Asia. To date, our sales have been made in U.S. Dollars and we do not expect
currency fluctuations to have a material impact on our operations.</FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The number of shares included in this prospectus
is approximately 19.99% of our common shares outstanding on December 31, 2004, and 16.66% of our
common stock after giving effect to the 3,959,782 shares included in this prospectus that may be
issued pursuant to the Common Stock Purchase Agreement we entered into with Kingsbridge, including
any shares that we may issue in payment of liquidated damages, and upon exercise of the warrant we
entered into with Kingsbridge. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our shares of common stock trade through
the NASDAQ SmallCap Market under the symbol &#147;ATCO.&#148; Our address is 13114 Evening Creek
Drive South, San Diego, California, our telephone number is 858-679-2114 and our internet website
is located at <U>www.atcsd.com</U>. The information on our website is not part of this prospectus. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a2"></a>THE OFFERING </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On December 14, 2004, we entered into a
Common Stock Purchase Agreement with Kingsbridge Capital Limited which established a Committed Equity
Financing Facility. Under the Committed Equity Financing Facility we may, at our sole discretion,
sell to Kingsbridge and Kingsbridge has committed to purchase subject to certain significant limitations
and conditions precedent, up to $25,000,000 of our common stock. As part of this arrangement, we
issued a warrant to Kingsbridge to purchase 275,000 shares of our common stock at a price of $8.60
per share. The warrant is exercisable beginning June&nbsp;14, 2005 and until June&nbsp;14, 2010. </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Kingsbridge is the selling stockholder
under this prospectus, is offering for sale up to 3,959,782 shares of our common stock that it may
acquire under the Committed Equity Financing Facility, including any shares that we may issue in
payment of liquidated damages, or upon exercise of the warrant. The number of shares ultimately offered
for sale by Kingsbridge is dependent upon the number of shares (i)&nbsp;we may decide to sell to
Kingsbridge under the Committed Equity Financing Facility at our sole discretion, subject to certain
significant limitations and conditions precedent, (ii) that we may elect to issue in lieu of paying
liquidated damages that may be owed to Kingsbridge in the event that the availability of the registration
statement, of which this prospectus is a part, is suspended, and (iii)&nbsp;we may be required to
sell to Kingsbridge upon exercise of the warrant. Kingsbridge does not have the right or the obligation
to purchase our stock under the Committed Equity Financing Facility in the event that our stock is
trading below $3.41 per share. </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will not receive any proceeds from the sale of any of the shares offered and sold by Kingsbridge.
However, we may receive up to $25 million in gross proceeds from the sale of our stock to Kingsbridge
under the Committed Equity Financing Facility, and up to approximately $2.4 million upon exercise
of the warrant. The number of shares we sell to Kingsbridge under the Committed Equity Financing
Facility is determined based on a price that is between 88% and 92% of the volume weighted average
of the price of our common stock for each of the fifteen trading days following our election to sell,
or draw down, shares for a fixed dollar amount of sales proceeds. Each draw down amount is limited
to a maximum of 3% of our market capitalization at the time of the election, and cannot in any case
exceed $10 million. For example, if we were to elect, and if we were permitted under the terms of
our agreement with Kingsbridge, to give draw down notices over time for the full $25 million commitment,
and if the volume weighted average price of our common stock throughout each of the fifteen trading
day draw down periods were to be equal to the closing market price of our common stock on April 15,
2005, or $8.36 per share, we would sell to Kingsbridge 3,322,700 shares of our common stock, which
represents 13.49% of our shares outstanding on April 15, 2005, after giving effect to the sale of such shares
(but not the exercise of the warrant issued to Kingsbridge). This estimate of the number of shares
to be sold assumes that our stock price would remain constant during each fifteen trading day draw
down period, and across the multiple draw down periods that would be required for us to draw down
the entire $25 million commitment, given the limitations on each draw down. This assumption is not
realistic, particularly since
during each fifteen trading day draw down period, Kingsbridge is permitted to sell the
shares to be issued with respect to each trading day once the discount purchase price for
such day (and therefore the number of shares to be purchased for such day) is determined.
These permitted sales during a draw down period may cause the volume weighted average
price of our common stock to decline on immediately subsequent days, resulting in the sale
of additional shares to Kingsbridge on immediately subsequent days for the same monetary
proceeds to us. The further sale of shares priced on those immediately subsequent days
could then cause further price declines on later days, resulting in the sale of increasing
numbers of shares for the same monetary proceeds as the draw down period progresses.
See &#147;Risk Factors&#148; beginning on page 3 and &#147;The Committed
Equity Financing Facility&#148; beginning on page 16.</FONT></P>


<P align=center><FONT face="Times New Roman, Times, serif" size=2>-2-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
are obligated to use 40% of any funds we receive from sales of shares under the Committed Equity
Financing Facility, but not funds we receive upon exercise of the warrant, to prepay any outstanding
interest and principal under promissory notes we sold in December 2004 with an aggregate principal
amount of $2 million. We plan to use all other funds received from Kingsbridge under the Committed
Equity Financing Facility and upon exercise of the warrant, as disclosed below under &#147;Use of
Proceeds.&#148; </FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a3"></a>RISK FACTORS </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>An investment in our company involves a high degree of risk. In addition to the other information included
in this prospectus, you should carefully consider the following risk factors in determining whether
or not to purchase the shares of common stock offered under this prospectus. You should consider
these matters in conjunction with the other information included or incorporated by reference in
this prospectus. Our results of operations or financial condition could be seriously harmed, and
the trading price of our common stock may decline due to any of these or other risks.</I> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>This prospectus contains statements that constitute forward-looking statements within the meaning of
the Private Securities Litigation Reform Act of 1995. These statements appear in a number of places
in this prospectus and include statements regarding the intent, belief or current expectations of
our management, directors or officers primarily with respect to our future operating performance.
Prospective purchasers of our securities are cautioned that these forward-looking statements are
not guarantees of future performance and involve risks and uncertainties. Actual results may differ
materially from those in the forward-looking statements due to various factors. The accompanying
information contained in this prospectus, including the information set forth below, identifies important
factors that could cause these differences. See &#147;Special Note Regarding Forward-Looking Statements.&#148;</I> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We have a history of net losses. We expect to continue to incur net losses and we may not achieve or
maintain profitability. </I></B></FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We have incurred significant operating
losses and anticipate continued losses in the remainder of fiscal 2005. At March 31, 2005, we had an accumulated
deficit of $45,467,359. We need to generate additional revenue to be profitable in future periods.
Failure to achieve profitability, or maintain profitability if achieved, may cause our stock price
to decline. </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We may need additional capital for growth.</I></B> &nbsp;</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our current plans indicate that depending
on sales, we may need additional capital to support our growth. We may generate a portion of these
funds from operations. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The actual amount of funds that we will
need will be determined by many factors, some of which are beyond our control, and we may need funds
sooner than currently anticipated. Principal factors that could affect the availability of our internally
generated funds include: </FONT></P>

<TABLE width="100%" border="0" cellPadding="0" cellSpacing="0">
  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="30" align="left" vAlign=top>&nbsp;</TD>
    <TD width="30" align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149; </font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">government spending levels; </font></TD>
  </TR>
  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149;</font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">introduction of new competing technologies; </font></TD>
  </TR>
  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>


  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149; </font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">failure of sales from our Government and Force Protection Group,
or Government Group, and our Commercial Products Group, or Commercial Group, which was formerly known as our Business Products and Licensing Group, to meet planned projections; </font></TD>
  </TR>


  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149; </font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">product mix and effect on margins; and </font></TD>
  </TR>
  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD align="left" vAlign=top>&nbsp;</TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149; </font></TD>
    <TD align="left" vAlign=top><font size="2" face="Times New Roman, Times, serif">acceptance of our products in new markets. </font></TD>
  </TR>
</TABLE>

<p><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;When we require additional funds, general
market conditions or the then-current market price of our common stock may not support capital raising
transactions. If we require additional funds and we are unable to obtain them on a timely basis or
on terms favorable to us, we may be required to scale back our research and development efforts,
sell or license some or all of our technology or assets or curtail or cease operations. If we raise
additional funds by selling additional shares of our capital stock or securities convertible into
common stock, the ownership interest of our stockholders will be diluted. </FONT></p>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-3-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
our stock price falls below $3.41 per share we will be unable to draw down on the Committed Equity
Financing Facility unless the stock price increases. The potential unavailability of this facility
would negatively affect our financing activities.</I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have entered into a Committed Equity Financing Facility with Kingsbridge Capital Limited. Under the
terms of our agreement with Kingsbridge, we may, at our sole discretion, sell to Kingsbridge, and
Kingsbridge would be obligated to purchase, shares of our common stock for up to $25 million in proceeds
to us. The price at which we may sell shares of common stock under the agreement is based on a discount
to the volume weighted average market price of the common stock for fifteen trading days following
each of our elections to sell shares. For each election to sell shares, we select the lowest threshold
price at which our stock may be sold, but the threshold price cannot be lower than $3.00 per share.
In the event the market price of our common stock falls below $3.41 per share, which after giving
effect to the discount would result in a price per share lower that the $3.00 minimum threshold price,
the Committed Equity Financing Facility will not be an available source of financing. Our stock has
traded below $3.41 per share during many periods in the past, including most recently during May
2003. In addition, we are obligated to use 40% of the proceeds we may raise from the Committed Equity
Financing Facility to prepay any outstanding interest and principal on promissory notes we sold in
December 2004 with an aggregate principal amount of $2 million. Our agreement with Kingsbridge permits
Kingsbridge to terminate the Committed Equity Financing Facility if Kingsbridge determines that a
material and adverse event has occurred affecting the business, operations, properties or financial
condition of our company, or if any situation occurs that would interfere with our ability to perform
any of our obligations under the agreement.</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
we are unable to draw down on the Committed Equity Financing Facility, and are otherwise unable to
obtain capital from other sources on a timely basis or on terms favorable to us, we may be required
to scale back our marketing and research and development efforts, sell or license some or all of
our technology or assets or curtail or cease operations.</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
Kingsbridge determines that a material and adverse event has occurred that affects our company, we
will be unable to draw down on the Committed Equity Financing Facility. The potential unavailability
of this facility would negatively affect our financing activities.</I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
agreement with Kingsbridge permits Kingsbridge to terminate the Committed Equity Financing Facility
if Kingsbridge determines that a material and adverse event has occurred affecting the business,
operations, properties or financial condition of our company, or if any situation occurs that would
interfere with our ability to perform any of our obligations under the agreement. If we are unable
to draw down on the Committed Equity Financing Facility, and are otherwise unable to obtain capital
from other sources on a timely basis or on terms favorable to us, we may be required to scale back
our marketing and research and development efforts, sell or license some or all of our technology
or assets or curtail or cease operations.</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each
advance under the Committed Equity Financing Facility in limited. We may not draw down on the Committed
Equity Financing Facility when Kingsbridge beneficially owns in excess of 9.9% of our outstanding
shares. The potential unavailability of this facility would negatively affect our financing activities.</I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each
draw down election we make is limited to a maximum of 3% of our market capitalization at the time
of the election, and cannot in any case exceed $10 million. We must also wait at least five trading
days after the end of a fifteen trading day draw down period before we can commence the next draw
down. In addition, the Committed Equity Financing Facility limits the beneficial ownership of Kingsbridge
to 9.9% of our outstanding common stock, which percentage includes any shares of common stock purchased
pursuant to the Committed Equity Financing Facility, that we may issue as liquidated damages, and
issued upon exercise of the warrant. Depending on the market price of our common stock and Kingsbridge&#146;s
other holdings of our common stock, this restriction may limit the maximum amount we can draw down
under the Committed Equity Financing Facility. If Kingsbridge&#146;s beneficial ownership were to
exceed 9.9% of our outstanding common stock, together with the total amount of our common stock that
would be outstanding upon completion of a draw down, we would not be able to draw down on the Committee
Equity Facility until such time as Kingsbridge sells enough shares of our common stock or our number
of shares of common stock outstanding increases, which may not occur. Therefore, we may not be able
to draw down on the full $25 million commitment.</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
sales of stock to Kingsbridge will be discounted to market price, so our stockholders will experience
immediate dilution in the value of their shares if we sell shares to Kingsbridge under the Committed
Equity Financing Facility.</I></B></FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
issuance of shares under the Committed Equity Financing Facility will have a dilutive impact on other
stockholders, and the issuance or even potential issuance of such shares could have a negative effect
on the market price of our common stock. In addition, if we draw down the Committed Equity Financing
Facility, we will issue shares to Kingsbridge at a discount ranging from 8% to 12% of the daily volume
weighted average prices of our common stock during the fifteen day trading period after initiation
of each draw down. Issuing shares at such a discount will further dilute the interests of other stockholders.
The 9.9% limitation on Kingsbridge&#146;s beneficial ownership will not prevent Kingsbridge from
selling some of its holdings and then receiving additional shares, such that the total number of
shares that we may sell to Kingsbridge under the Committed Equity Financing Facility that it may resell
under this prospectus is greater than 9.9% of our outstanding stock.</FONT></P>


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<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;There
are a large number of shares underlying the Committed Equity Financing Facility that are being registered
in this prospectus, and the sale of these shares may depress the price of our common stock.</I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
the extent that Kingsbridge sells shares of our common stock issued under the Committed Equity Financing
Facility under this prospectus, our stock price may decrease due to the additional selling pressure
in the market. The perceived risk of dilution from sales of stock to or by Kingsbridge may cause
holders of our common stock to sell their shares, which could contribute to a decline in our stock
price.</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
sale of shares underling the Committed Equity Financing Facility could encourage short sales by third
parties, which could contribute to the future decline of our stock price. </I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A significant
downward pressure on the price of our common stock caused by the sale of material amounts of common
stock under the Committed Equity Financing Facility could encourage short sales by third parties.
In a short sale, a prospective seller borrows stock from a stockholder or broker and sells the borrowed
stock. The prospective seller hopes that the stock price will decline, at which time the seller can
purchase shares at a lower price to repay the lender. The seller profits when the stock price declines
because it is purchasing shares at a price lower than the sale price of the borrowed stock. Such
sales could place downward pressure on the price of our common stock by increasing the number of
shares being sold, which could contribute to the future decline of our stock price.</FONT></P>


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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We cannot
predict the actual number of shares that we will issue under the Committed Equity
Financing Facility, in any particular draw down, or in total. The number of shares we will
issue will fluctuate based on the market price of our stock over the fifteen trading days
after we give a draw down notice for each draw down period.</I></B></FONT></P>


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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
actual number of shares that we will issue under the Committed Equity Financing Facility
in any particular draw down, and in total, is uncertain. Subject to the limitations in our
agreement with Kingsbridge, we have the discretion to draw down funds at any time
throughout the term of the Committed Equity Financing Facility, and we have not determined
the amount of proceeds, if any, we will seek to raise through the Committed Equity
Financing Facility. Also, the number of shares we must issue after giving a draw down
notice will fluctuate based on the market price of our stock over the fifteen trading days
after we give a draw down notice, and Kingsbridge will receive more shares if our stock
price declines. Assuming the volume weighted average price of our common stock is $5.52
per share, which was the closing sale price reported on the NASDAQ SmallCap Market on
May 11, 2005, and we elected to draw down a total of $10 million under the Committed
Equity Financing Facility, we would issue 2,012,882 shares of common stock to Kingsbridge,
representing 8.6% of our common stock outstanding as of May 11, 2005, after giving effect
to the sale of such shares. Using the same assumptions and conditions but with elections
by us to draw down the full $25 million under the Committed Equity Financing Facility, we
would issue 5,032,206 shares of common stock to Kingsbridge, representing 19.1% of our
common stock outstanding on May 11, 2005, after giving effect to the sale of such shares. During the one year period ended
May 11, 2005, our stock price as reported on the NASDAQ SmallCap Market ranged from
a high of $11.55 to a low of $4.38. You should read the table on page 18
for more information on the amount of proceeds and the potential dilution under the
Committed Equity Financing Facility at various market prices. </FONT></P>


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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
above estimates of the number of shares to be sold assume that our stock price would
remain constant during each fifteen trading day draw down period, and across all draw down
periods. This assumption is not realistic, particularly since during each fifteen trading
day draw down period, Kingsbridge is permitted to sell the shares to be issued with
respect to each trading day once the discount purchase price for such day (and therefore
the number of shares to be purchased for such day) is determined. These permitted sales
during a draw down period may cause the volume weighted average price of our common stock
to decline on immediately subsequent days, resulting in the sale of additional shares to
Kingsbridge on immediately subsequent days for the same monetary proceeds to us. The
further sale of shares priced on those immediately subsequent days could then cause
further price declines on later days, resulting in the sale of increasing numbers of
shares for the same monetary proceeds as the draw down period progresses. </FONT></P>

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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Furthermore,
Kingsbridge&#146;s 9.9% beneficial ownership limitation is determined on, and based on the
amount of our common stock outstanding on, each settlement date. As the number of shares
outstanding on each settlement date increases, Kingsbridge may be required to purchase
more shares of our common stock during a draw down period than would have been apparent on
the date that we sent the draw down notice to Kingsbridge. </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We may issue additional common stock in the future, including shares under our Committed Equity Financing
Facility, and this stock may reduce the value of your common stock.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As a result of the Committed Equity Financing
Facility or other financings, we may issue additional shares of common stock without further action
by our stockholders. Moreover, the economic and voting interests of each stockholder will be diluted
as a result of such issuances. Although the number of shares of common stock that stockholders presently
own will not decrease, such shares will represent a smaller percentage of our total shares that will
be outstanding after such events. If we satisfy the conditions that allow us to draw down the entire
$25 million available under the Committed Equity Financing Facility, and we choose to do so, then
generally, as the market price of our common stock decreases, the number of shares we will have to
issue upon each draw down on the Committed Equity Financing Facility increases, to a maximum of 3,684,782
shares we may issue without stockholder approval. Drawing down on the Committed Equity Financing
Facility when the price of our common stock is decreasing will have an additional dilutive effect
to your ownership percentage and may result in additional downward pressure on the price of our common stock. </FONT></P>


<P align=center><FONT face="Times New Roman, Times, serif" size=2>-5-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I></I></B><B><I>Sales of common stock issuable on the exercise of outstanding options and warrants, including the warrant
held by Kingsbridge, may depress the price of our common stock. </I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I></I></B></FONT><FONT face="Times New Roman, Times, Serif" size=2>As of
May 11, 2005, there were options granted to our employees, directors and consultants to purchase
2,129,311 shares of our common stock. As of May 11, 2005, there were warrants granted to investors
to purchase 2,308,234 shares of our common stock, including the warrant issued to Kingsbridge exercisable
for 275,000 shares. The exercise prices for the options and warrants range from $2.00 to $11.00 per
share. In the future we may issue additional convertible securities, options and warrants. The issuance
of shares of common stock issuable upon the exercise of convertible securities, options or warrants
could cause substantial dilution to holders of common stock, and the sale of those shares in the
market could cause the market price of our common stock to decline. The potential dilution from these
shares could negatively affect the terms on which we could obtain equity financing.</FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>The Committed Equity Financing Facility imposes certain liquidated damages which may impair our liquidity
and ability to raise capital.</I></B> </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT face="Times New Roman, Times, Serif" size=2>The terms of the Committed Equity Financing Facility require us to pay liquidated damages in the event
that a registration statement is not available for the resale of securities purchased by Kingsbridge
under the Committed Equity Financing Facility. These liquidated damages provisions generally require
us to pay an amount based on the decline in value, if any, of shares held by Kingsbridge during the
time a registration statement is unavailable. See &#147;The Committed Equity Financing Facility&#148;
below for a further description of these liquidated damages provisions. The liquidated damages could
severely affect our liquidity, or to the extent we are permitted to and decide to pay such damages
through the issuance of common stock, cause significant dilution to our common stockholders.
</FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
may not issue convertible securities with a floating or adjustable discount to the price of our common
stock during the two year term of the Common Equity Financing Facility without the prior written
consent of Kingsbridge, which consent we may not be able to obtain. These restrictions may affect
our ability to raise capital.</I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;During
the two-year term of the proposed Committed Equity Financing Facility, without the prior written
consent of Kingsbridge, we are prohibited from issuing securities that are, or may become, convertible
or exchangeable into shares of common stock where the purchase, conversion or exchange price for
such common stock is determined using a floating or otherwise adjustable discount to the market price
of the common stock (including pursuant to an equity line or other financing that is substantially
similar to an equity line with an investor other than Kingsbridge). In the past, we met our capital
needs through the sale of preferred stock and convertible notes which had floating price features.
We may have difficulty raising capital if Kingsbridge does not consent to our use of such securities
in the future. If we are unable to raise capital from Kingsbridge or from sources that do not demand
a floating price feature, we may have to severely curtail our operations, which could cause a significant
decrease in the price of our common stock. </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
ability to draw down on the Committed Equity Financing Facility may be limited under the rules of
the NASDAQ Stock Market.</I></B></FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
the rules of the NASDAQ Stock Market, the approval of our stockholders is required for the sale of
shares to Kingsbridge totaling more than 20% of our issued and outstanding shares at the time we
entered into the agreement with Kingsbridge. If our average sale price to Kingsbridge is below $6.78
per share (equivalent to a volume weighted average price of $7.54 per share, assuming a 10% discount
for all sales) and we elect to draw the full $25 million commitment, it would require that we issue
more than 20% of our issued and outstanding shares at the time we entered into the agreement with
Kingsbridge and we would need to seek stockholder approval to do so. The $6.78 average sale
price mentioned above assumes that we have not issued Kingsbridge any shares in lieu of
paying liquidated damages that may be owed to Kingsbridge in the event that the
availability of the registration statement, of which this prospectus is a part, is
suspended. If we issue shares to Kingsbridge in lieu of payment of liquidated damages, the
average sale price (and the volume weighted average price) would need to be higher in
order to elect to draw the full $25 million commitment without stockholder approval.
If we are unable to obtain such stockholder approval, our ability to raise capital under the Committed Equity Financing Facility
will be impaired. If we are unable to obtain capital from other sources on a timely basis or on terms
favorable to us, we may be required to scale back our marketing and research and development efforts,
sell or license some or all of our technology or assets or curtail or cease operations.</FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>One customer collectively accounted
for approximately 93% of our revenues for the three months ended March 31, 2005,
two customers accounted for 92% of our revenues for the six months ended March
31, 2005, and we continue
to be dependent on a few large customers.</I></B> </FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ADS, Inc., a prime
vendor to the U. S. military, accounted for 93% of net revenues for the three months ended March 31, 2005.
For the six months ended March 31, 2005, ADS accounted for 82% of our revenues and a second
customer and its affiliates accounted for 10% of our revenues.  These
customers have the right to cease doing business with us at any time. If this were to occur
and we could not replace them, our net revenues
would decline substantially. Any such decline could result in us incurring net losses,
increasing our accumulated deficit and causing us to need to raise additional capital to
fund our operations.</FONT></P>




<P align="center"><FONT face="Times New Roman, Times, serif" size=2>-6-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We must expand our customer base in order to grow our business.</I></B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To grow our business, we must fulfill orders
from our existing customers, obtain additional orders from our existing customers, develop relationships
with new customers and obtain and fulfill orders from new customers. We cannot guarantee that we
will be able to increase our customer base. Further, even if we do obtain new customers, we cannot
guarantee that those customers will purchase from us enough quantities of our product or at product
prices that will enable us to recover our costs in acquiring those customers and fulfilling those
orders. Whether we will be able to sell more of our products will depend on a number of factors,
including: </FONT></P>

<table width="100%" cellpadding="0" cellspacing="0">
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">our ability to manufacture reliable products that have the features that are required by our customers; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">our ability to expand relationships with existing customers and to develop relationships with new customers that will lead to additional orders for our products; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">our ability to develop and expand new markets for directed sound products; and </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">our ability to develop international product distribution directly or through strategic partners. </font></td>
  </tr>
</table>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>The growth of our Government Group revenues is materially dependent on acceptance of our LRAD products
by government, military and developing force protection and emergency response agencies, and if these
agencies do not purchase our products, our revenues will be adversely affected.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Although our LRAD products are designed
for use by both government and commercial customers, our LRAD products have, to date, been predominantly
sold for government use. Within the Government Group, our largest customer is a reseller of our products
to end users in various branches of the military such as the U.S. Navy, U.S. Marine Corps, U.S. Army
and the Department of Homeland Security. We have only recently achieved significant sales of LRAD
products, and the product has not yet been widely accepted in the government market. Furthermore,
the force protection and emergency response market is itself an emerging market which is changing
rapidly. If our LRAD product is not widely accepted by the government, military and the developing
force protection and emergency response markets, we may not be able to identify other markets, and
we may fail to achieve our sales projections. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Perceptions that long range hailing devices are unsafe or may be used in an abusive manner may hurt
sales of our LRAD products which could cause our revenues to decline.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Potential customers for our LRAD products,
including government, military and force protection and emergency response agencies may be influenced
by claims or perceptions that long range hailing devices are unsafe or may be used in an abusive
manner. These claims or perceptions could cause our product sales to decline. In addition, if these
agencies have these perceptions, it will be difficult for us to grow our customer base beyond these
markets. These factors could reduce future revenues, adversely affecting our financial condition
and results of operations. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We are an early stage company introducing new products and technologies. If commercially successful
products are not produced in a timely manner, we may be unprofitable or forced to cease operations.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our HSS, NeoPlanar and LRAD technologies
have only recently been introduced to market and are still being improved. Commercially viable sound
technology systems may not be successfully and timely produced by us due to the inherent risks of
technology development, new product introduction, limitations on financing, manufacturing problems,
competition, obsolescence, loss of key technical personnel and other factors. Revenues from our sound
products have been limited to date and we cannot guarantee significant revenues in the future. The
development and introduction of our products took longer than anticipated by management and the introduction
of new products could also be subject to delays. Customers may not wait for newer versions of existing
products or new products and may elect to purchase products from competitors. We experienced quality
control problems with some of our initial commercial HSS units, and we may not be able to resolve
future similar problems in a timely and cost effective manner. Products employing our sound technology
may not achieve market acceptance. Our various sound projects are high risk in nature, and unanticipated
technical obstacles can arise at any time and result in lengthy and costly delays or result in a
determination that further exploitation is unfeasible. If we do not successfully exploit our technology,
our financial condition and results of operations and business prospects would be adversely affected. </FONT></P>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-7-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our products have never been produced in quantity, and we may incur significant and unpredictable warranty
costs as these products are mass produced.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;None of our products has been produced
in sufficient quantities to be considered mass produced. Our technologies are substantially different
from proven, mass produced sound transducer designs. We may incur substantial and unpredictable warranty
costs from post-production product or component failures. We generally warrant our products to be
free from defects in materials and workmanship for a period up to one year from the date of purchase,
depending on the product. </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;At
March 31, 2005, we had a warranty reserve of $238,837. We recorded substantial reserves to early versions
of our HSS products and have little history to predict future warranty costs. Future warranty costs could further adversely affect our financial position,
results of operations and business prospects. </FONT></P>


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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif"><FONT SIZE="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We could incur
charges for excess and obsolete inventory.</I></B></FONT></FONT></P>

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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Due to rapidly
changing technology and uneven customer demand, product cycles tend to be short and the
value of our inventory may be adversely affected by changes in technology that affect our
ability to sell the products in our inventory. Therefore, periodically, it may be
necessary to write off inventory as excess or obsolete.</FONT></P>

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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;While we will make
every attempt to successfully manage product transition, including inventory control of
older generation products when introducing new products, we have previously experienced
and may, in the future, experience reductions in sales of older generation products as
customers delay or defer purchases in anticipation of new product introductions. We
currently have established reserves for slow moving or obsolete inventory. The reserves we
have established for potential losses due to obsolete inventory may, however, prove to be
inadequate and may give rise to additional charges for obsolete or excess inventory.</FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We do not have the ability to predict future operating results. Our quarterly and annual revenues will
likely be subject to fluctuations caused by many factors, any of which could result in our failure
to achieve our revenue expectations.</I></B> </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We expect our sound proprietary reproduction
technologies will be the source of substantially all of our future revenues. Revenues from our sound
proprietary reproduction technologies are expected to vary significantly due to a number of factors.
Many of these factors are beyond our control. Any one or more of the factors listed below or other
factors could cause us to fail to achieve our revenue expectations. These factors include: </FONT></P>

<table width="100%"   border="0" cellpadding="0" cellspacing="0">
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> our ability to develop and supply sound reproduction components to customers, distributors or OEMs or to license our technologies; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> market acceptance of and changes in demand for our products or products of our customers; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> gains or losses of significant customers, distributors or strategic relationships; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> unpredictable volume and timing of customer orders; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> the availability, pricing and timeliness of delivery of components for our products and OEM products; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> fluctuations in the availability of manufacturing capacity or manufacturing yields and related manufacturing costs; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> the timing of new technological advances, product announcements or introductions by us, by OEMs or licensees and by our competitors; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> product obsolescence and the management of product transitions and inventory; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> unpredictable warranty costs associated with new product models; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> production delays by customers, distributors, OEMs or by us or our suppliers; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> seasonal fluctuations in sales; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> the conditions of other industries, such as military and commercial industries, into which our technologies may be licensed; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> general consumer electronics industry conditions, including changes in demand and associated effects on inventory and inventory practices; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> general economic conditions that could affect the timing of customer orders and capital spending and result in order cancellations or rescheduling; and </font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> general political conditions in this country and in various other parts of the world that could affect spending for the products that we offer. </font></td>
  </tr>
</table>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-8-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Some or all of these factors could adversely
affect demand for our products or technologies, and therefore adversely affect our future operating
results. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Most of our operating expenses are relatively
fixed in the short term. We may be unable to rapidly adjust spending to compensate for any unexpected
sales or license revenue shortfalls, which could harm our quarterly operating results. We do not
have the ability to predict future operating results with any certainty. </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our expenses may vary from period to period, which could affect quarterly results and our stock price.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If we incur additional expenses in a quarter
in which we do not experience increased revenue, our results of operations would be adversely affected
and we may incur larger losses than anticipated for that quarter. Factors that could cause our expenses
to fluctuate from period to period include:&nbsp;</FONT></P>

<table width="100%" border="0" cellpadding="0" cellspacing="0">
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> the value of our stock price, which impacts the income or expense we record each quarter for the warrant issued to Kingsbridge; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> the timing and extent of our research and development efforts; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> investments and costs of maintaining or protecting our intellectual property; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>


  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> the extent of marketing and sales efforts to promote our products and technologies; and</font></td>
  </tr>


  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>


  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> the timing of personnel and consultant hiring. </font></td>
  </tr>


</table>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;<B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Many potential competitors who have greater resources and experience than we do may develop products
and technologies that make ours obsolete.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Technological competition from other and
longer established electronic and loudspeaker manufacturers is significant and expected to increase.
Most of the companies with which we expect to compete have substantially greater capital resources,
research and development staffs, marketing and distribution programs and facilities, and many of
them have substantially greater experience in the production and marketing of products. In addition,
one or more of our competitors may have developed or may succeed in developing technologies and products
that are more effective than any of ours, rendering our technology and products obsolete or noncompetitive.
</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Sound reproduction markets are subject to rapid technological change, so our success will depend on
our ability to develop and introduce new technologies.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Technology and standards in the sound reproduction
markets evolve rapidly, making timely and cost-effective product innovation essential to success
in the marketplace. The introduction of products with improved technologies or features may render
our technologies obsolete and unmarketable. If we cannot develop products in a timely manner in response
to industry changes, or if our technologies do not perform well, our business and financial condition
will be adversely affected. The life cycles of our technologies are difficult to estimate, particularly
those such as HSS and LRAD for which there are no well established markets. As a result, our technologies,
even if successful, may become obsolete before we recoup our investment. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our competitive position will be seriously damaged if we cannot obtain patent protection for important
differentiating aspects of our products or otherwise protect intellectual property rights in our
technology.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We rely on a combination of contracts and
trademark, patent and trade secret laws to establish and protect our proprietary rights in our technology.
However, we may not be able to prevent misappropriation of our intellectual property, our competitors
may be able to independently develop and the agreements we enter into may not be enforceable. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-9-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our success, in part, depends on our ability
to obtain and enforce intellectual property protection for our technology, particularly our patents.
There is no guarantee any patent will issue on any patent application that we have filed or may file.
Claims allowed from existing or pending patents may not be of sufficient scope or strength to protect
the economic value of our technologies. Further, any patent that we may obtain will expire, and it
is possible that it may be challenged, invalidated or circumvented. If we do not secure and maintain
patent protection for our technology and products, our competitive position will be significantly
harmed because it will be much easier for competitors to sell products similar to ours. Alternatively,
a competitor may independently develop or patent technologies that are substantially equivalent to
or superior to our technology. For example, patent protection on our LRAD product is limited, and
we may not be able to prevent others from introducing products with similar functionality. If this
happens, any patent that we may obtain may not provide protection and our competitive position could
be significantly harmed. </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As we expand our product line or develop
new uses for our products, these products or uses may be outside the protection provided by our current
patent applications and other intellectual property rights. In addition, if we develop new products
or enhancements to existing products we cannot assure you that we will be able to obtain patents
to protect them. Even if we do receive patents for our existing or new products, these patents may
not provide meaningful protection. In some countries outside of the United States where our products
can be sold or licensed, patent protection is not available. Moreover, some countries that do allow
registration of patents do not provide meaningful redress for violations of patents. As a result,
protecting intellectual property in these countries is difficult and our competitors may successfully
sell products in those countries that have functions and features that infringe on our intellectual property. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We may initiate claims or litigation against
third parties in the future for infringement of our proprietary rights or to determine the scope
and validity of our proprietary rights or the proprietary rights of our competitors. These claims
could result in costly litigation and divert the efforts of our technical and management personnel.
As a result, our operating results could suffer and our financial condition could be harmed. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our competitive position will be seriously damaged if our products are found to infringe on the intellectual
property rights of others.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other companies and our competitors may
currently own or obtain patents or other proprietary rights that might prevent, limit or interfere
with our ability to make, use or sell our products. As a result, we may be found to infringe the
intellectual property rights of others. The electronics industry is characterized by vigorous protection
and pursuit of intellectual property rights or positions, which have resulted in significant and
often protracted and expensive litigation. In the event of a successful claim of infringement against
us and our failure or inability to license the infringed technology, our business and operating results
could be adversely affected. Any litigation or claims, whether or not valid, could result in substantial
costs and diversion of our resources. An adverse result from intellectual property litigation could
force us to do one or more of the following: </FONT></P>

<table width="100%"  border="0" cellpadding="0" cellspacing="0">
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> cease selling, incorporating or using products or services that incorporate the challenged intellectual property; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> obtain a license from the holder of the infringed intellectual property right, which license may not be available on reasonable terms, if at all; and </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> redesign products or services that incorporate the disputed technology. </font></td>
  </tr>
</table>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If we are forced to take any of the foregoing
actions, we could face substantial costs and shipment delays and our business could be seriously
harmed. Although we carry general liability insurance, our insurance may not cover potential claims
of this type or be adequate to indemnify us for all liability that may be imposed. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, it is possible that our customers
or end users may seek indemnity from us in the event that our products are found or alleged to infringe
the intellectual property rights of others. Any such claim for indemnity could result in substantial
expenses to us that could harm our operating results. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our HSS technology is subject to government regulation, which could lead to unanticipated expense or
litigation.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our HyperSonic sound technology emits ultrasonic
vibrations, and as such is regulated by the Food and Drug Administration. In the event of certain
unanticipated defects in an HSS product, a customer or we may be required to comply with FDA requirements
to remedy the defect and/or notify consumers of the problem. This could lead to unanticipated expense,
and possible product liability litigation against a customer or us. Any regulatory impediment to
full commercialization of our HSS technology, or any of our other technologies, could adversely affect
our results of operations. </FONT></P>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-10-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We may face personal injury and other liability claims that harm our reputation and adversely affect
our sales and financial condition.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Some of our products are capable of sufficient
acoustic output to cause damage to human hearing or human health if used improperly, such as when
the products are used at close ranges or for long periods of exposure. A person injured in connection
with the use of our products may bring legal action against us to recover damages on the basis of
theories including personal injury, negligent design, dangerous product or inadequate warning. We
may also be subject to lawsuits involving allegations of misuse of our products. Our product liability
insurance coverage may be insufficient to pay all such claims. Product liability insurance may become
too costly for us or may become unavailable for us in the future. We may not have sufficient resources
to satisfy any product liability claims not covered by insurance which would materially and adversely
affect our financial position. Significant litigation could also result in a diversion of management&#146;s
attention and resources, and negative publicity. </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We may not be successful in obtaining the necessary licenses required for us to sell some of our products
abroad.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Licenses for the export of certain of our
products may be required from government agencies in accordance with various statutory authorities,
including, for example, the Trading with the Enemy Act of 1917, the Arms Export Control Act of 1976,
the Export Administration Act of 1979, or the International Emergency Economic Powers Act, as well
as their implementing regulations and executive orders. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In the case of certain agreements involving
equipment or services controlled under the International Traffic in Arms Regulations (ITAR) and sold
at specified dollar volumes, the U.S. Department of State must notify Congress at least fifteen to
thirty days, depending on the intended overseas destination, prior to authorizing these sales. During
that time, Congress may take action to block the proposed sale. Based on our current product lines,
we do not anticipate the congressional notification requirement to have an immediate impact; however,
as our product lines expand, this notification requirement could impact our ability to sell certain
controlled products or services in the international market. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The need for export licenses and, when
required, Congressional notification, can introduce a period of delay in our ability to consummate
international transactions. Because issuance of an export license is wholly within the discretion
of the controlling U.S. government agency, it is possible that, in some circumstances, we may not
be able to obtain the necessary licenses for some potential transactions. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our operations could be harmed by factors including political instability, natural disasters, fluctuations
in currency exchange rates and changes in regulations that govern international transactions.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We expect to sell or products worldwide.
The risks inherent in international trade may reduce our international sales and harm our business
and the businesses of our customers and our suppliers. These risks include: </FONT></P>

<table width="100%" border="0" cellpadding="0" cellspacing="0">
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> changes in tariff regulations; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> political instability, war, terrorism and other political risks; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> foreign currency exchange rate fluctuations; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> establishing and maintaining relationships with local distributors and dealers; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> lengthy shipping times and accounts receivable payment cycles; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> import and export licensing requirements; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> compliance with a variety of foreign laws and regulations, including unexpected changes in taxation and regulatory requirements; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> greater difficulty in safeguarding intellectual property than in the U.S.; and </font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td>&nbsp;</td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> difficulty in staffing and managing geographically diverse operations. </font></td>
  </tr>
</table>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;These and other risks may preclude or curtail
international sales or increase the relative price of our products compared to those manufactured
in other countries, reducing the demand for our products. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-11-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Commercialization of our proprietary sound technologies depends on collaborations with other companies.
If we are not able to maintain or find collaborators and strategic alliance relationships in the
future, we may not be able to develop our proprietary sound technologies and products.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An important part of our strategy is to
establish business relationships with leading participants in various segments of the electronics,
government and sound reproduction markets to assist us in producing, distributing, marketing and
selling products that include our proprietary sound technologies. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our success will therefore depend on our
ability to maintain or enter into new strategic arrangements with partners on commercially reasonable
terms. If we fail to enter into such strategic arrangements with third parties, our financial condition,
results of operations, cash flows and business prospects will be adversely affected. Any future relationships
may require us to share control over our development, manufacturing and marketing programs or to
relinquish rights to certain versions of our sound and other technologies. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We are dependent on third party manufacturers.</I></B> &nbsp;</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We do not have the capacity to manufacture
all of our products internally and we are therefore dependent on third party manufacturers. At present,
we manufacture NeoPlanar and SoundCluster internally only in small quantities and would need to outsource
our manufacturing if sales of these products were to increase significantly. In addition, we established
a manufacturing relationship with Pemstar, Inc. in fiscal 2004 to manufacture our LRAD and HSS products.
We do not have a formal written agreement with Pemstar. Pemstar, or any other contract manufacturing
partner, may not be able or willing to manufacture products for us in the quantities and at the level
of quality that we require. If we need to seek additional third party manufacturers for our products,
we may not be able to obtain acceptable replacement manufacturing sources on a timely basis. An extended
interruption in the supply of our products could result in a substantial loss of sales. In addition,
any actual or perceived degradation of product quality as a result of our reliance on third party
manufacturers may have an adverse effect on sales or result in increased product returns and buybacks.
Failure to maintain quality contract manufacturing could reduce future revenues, adversely affecting
financial condition and results of operations. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We rely on outside suppliers to provide a large number of components incorporated in our products.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our products have a large number of components
produced by outside suppliers. In addition, for certain of these items, we qualify only a single
source, which can magnify the risk of shortages and decrease our ability to negotiate with our suppliers
on the basis of price. In particular, we depend on our HSS piezo-film supplier to provide expertise
and materials used in our proprietary HSS emitters. If shortages occur, or if we experience quality
problems with suppliers, then our production schedules could be significantly delayed or costs significantly
increased, which would have a material adverse effect on our business, liquidity, results of operation
and financial position. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our contracts and subcontracts that are funded by the U.S. government or foreign governments are subject
to government regulations and audits and other requirements.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Government contracts require compliance
with various contract provisions and procurement regulations. The adoption of new or modified procurement
regulations could have a material adverse effect on our business, financial condition or results
of operations or increase the costs of competing for or performing government contracts. If we violate
any of these regulations, then we may be subject to termination of these contracts, imposition of
fines or exclusion from government contracting and government-approved subcontracting for some specific
time period. In addition, our contract and subcontract costs and revenues may be subject to adjustment
as a result of audits by government auditors. </FONT></P>


<P align=center><FONT face="Times New Roman, Times, serif" size=2>-12-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We derive revenue from government contracts and subcontracts, which are often non-standard, may involve
competitive bidding, may be subject to cancellation with or without penalty and may produce volatility
in earnings and revenue.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our Government Group business has involved
and is expected in the future to involve providing products and services under contracts or subcontracts
with U.S. federal, state, local and foreign government agencies. Obtaining contracts and subcontracts
from government agencies is challenging, and contracts often include provisions that are not standard
in private commercial transactions. For example, government contracts may: </FONT></P>

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    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> include provisions that allow the government agency to terminate the contract without penalty under some circumstances; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> be subject to purchasing decisions of agencies that are subject to political influence;&nbsp;&nbsp; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> contain onerous procurement procedures; and&nbsp;&nbsp; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif"> be subject to cancellation if government funding becomes unavailable. </font></td>
  </tr>
</table>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Securing government contracts can be a
protracted process involving competitive bidding. In many cases, unsuccessful bidders may challenge
contract awards, which can lead to increased costs, delays and possible loss of the contract for
the winning bidder. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>If our key employees do not continue to work for us, our business will be harmed because competition
for replacements is intense.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our performance is substantially dependent
on the performance of our executive officers and key technical employees, including Elwood G. Norris,
our Chairman, and Kalani Jones, our President and Chief Operating Officer. We are dependent on our
ability to retain and motivate high quality personnel, especially highly skilled technical personnel.
Our future success and growth also depends on our continuing ability to identify, hire, train and
retain other highly qualified technical, managerial and sales personnel. Competition for such personnel
is intense, and we may not be able to attract, assimilate or retain other highly qualified technical,
managerial or sales personnel in the future. The inability to attract and retain the necessary technical,
managerial or sales personnel could cause our business, operating results or financial condition to suffer. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We may not address successfully the problems encountered in connection with any potential future acquisitions.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We expect to continue to consider opportunities
to acquire or make investments in other technologies, products and businesses that could enhance
our capabilities, complement our current products or expand the breadth of our markets or customer
base. We have limited experience in acquiring other businesses and technologies. Potential and completed
acquisitions and strategic investments involve numerous risks, including: </FONT></P>
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  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">problems assimilating the purchased technologies, products or business operations; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">problems maintaining uniform standards, procedures, controls and policies;&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">unanticipated costs associated with the acquisition; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">diversion of management&#146;s attention from our core business; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">adverse effects on existing business relationships with suppliers and customers; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">risks associated with entering new markets in which we have no or limited prior experience; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">potential loss of key employees of acquired businesses; and </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">increased legal and accounting costs as a result of the newly adopted rules and regulations related to the Sarbanes-Oxley Act of 2002. </font></td>
  </tr>
</table>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If we fail to properly evaluate and execute
acquisitions and strategic investments, our management team may be distracted from our day-to-day
operations, our business may be disrupted and our operating results may suffer. In addition, if we
finance acquisitions by issuing equity or convertible debt securities, our stockholders would be
diluted. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-13-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We are subject to increased costs as a result of newly adopted accounting and SEC regulations.</I></B> </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to Section 404 of the Sarbanes-Oxley
Act of 2002, our management will be required by the end of fiscal 2005 to perform an evaluation of
our internal control over financial reporting and have our independent auditor attest to that evaluation.
Compliance with these requirements is expected to be expensive and time consuming. If we fail to
timely complete this evaluation, or if our independent registered public accounting firm cannot timely
attest to our evaluation, we could be subject to regulatory scrutiny and a loss of public confidence
in our internal control over financial reporting. </FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In designing and evaluating our internal
control over financial reporting, we recognize that any internal control or procedure, no matter
how well designed and operated, can provide only reasonable assurance of achieving desired control
objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship
of possible controls and procedures. No system of internal control can be designed to provide absolute
assurance of effectiveness and any material failure of internal control over financial reporting
could materially impact our reported financial results and the market price of our stock could significantly
decline. In addition, adverse publicity related to a material failure of internal control over financial
reporting would have a negative impact on our reputation and business. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I></I></B><B><I>Changes in stock option accounting rules may adversely impact our reported operating results prepared
in accordance with generally accepted accounting principles, our stock price and our competitiveness
in the employee marketplace. </I></B></FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Technology companies in general and our
company in particular have a history of depending upon and using broad based employee stock option
programs to hire, incentivize and retain employees in a competitive marketplace. Currently, we do
not recognize compensation expense for stock options issued to employees or directors, except in
limited cases involving modifications of stock options, and we instead disclose in the notes to our
financial statements information about what such charges would be if they were expensed. An accounting
standard setting body has recently adopted a new accounting standard that will require us to record
equity-based compensation expense for stock options and employee stock purchase plan rights granted
to employees based on the fair value of the equity instrument at the time of grant. We will be required
to record these expenses beginning with our first quarter of fiscal 2006, which ends December 31, 2005.  The change in accounting
rules will lead to increased reported net loss or, should we become profitable, a decrease in reported
earnings. This may negatively impact our future stock price. In addition, this change in accounting
rules could impact our ability to utilize broad based employee stock plans to reward employees and
could result in a competitive disadvantage to us in the employee marketplace. </FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>We may issue preferred stock in the future, and the terms of the preferred stock may reduce the value
of your common stock.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are authorized to issue up to 5,000,000
shares of preferred stock in one or more series. Our board of directors may determine the terms of
future preferred stock offerings without further action by our stockholders. If we issue additional
preferred stock, it could affect your rights or reduce the value of your common stock. In particular,
specific rights granted to future holders of preferred stock could be used to restrict our ability
to merge with or sell our assets to a third party. These terms may include voting rights, preferences
as to dividends and liquidation, conversion and redemption rights, and sinking fund provisions. </FONT></P>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-14-</FONT></P>
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<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B><I>Our stock price is volatile and may continue to be volatile in the future.</I></B> </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our common stock trades on the NASDAQ SmallCap
Market. The market price of our common stock has fluctuated significantly to date. In the future,
the market price of our common stock could be subject to significant fluctuations due to general
market conditions and in response to quarter-to-quarter variations in:</FONT></P>

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    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">our anticipated or actual operating results; </font></td>
  </tr>
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    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">developments concerning our sound reproduction technologies; </font></td>
  </tr>
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    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">technological innovations or setbacks by us or our competitors; </font></td>
  </tr>
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    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">conditions in the consumer electronics market; </font></td>
  </tr>
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    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">announcements of merger or acquisition transactions; </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">changes in personnel within our company; and </font></td>
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    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">other events or factors and general economic and market conditions. </font></td>
  </tr>
</table>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The stock market in recent years has experienced
extreme price and volume fluctuations that have affected the market price of many technology companies,
and that have often been unrelated or disproportionate to the operating performance of companies. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a4"></a>SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Statements in this prospectus and in the
documents incorporated by reference in this prospectus that are not statements of historical fact
are forward-looking statements. These statements relate to our future plans, objectives, expectations
and intentions. You may generally identify these statements by the use of words such as &#147;expect,&#148;
&#147;anticipate,&#148; &#147;may,&#148; &#147;will&#148; and similar expressions. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You should not place undue reliance on
our forward-looking statements. Our actual results could differ materially from those anticipated
in these forward-looking statements as a result of numerous risks and uncertainties that are beyond
our control, including those we discuss in &#147;Risk Factors&#148; and elsewhere in this prospectus
and in the documents incorporated by reference in this prospectus. The information in this prospectus
speaks only as of the date of this prospectus and the information incorporated herein by reference
speaks only as of its date. You should not rely on these statements without also considering the
risks and uncertainties associated with these statements and our business. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a5"></a>USE OF PROCEEDS </B></FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We will not receive any proceeds from the
sale of any of the shares offered and sold by Kingsbridge. However, we may receive up to $25 million
in gross proceeds from the sale of our stock to Kingsbridge under the Committed Equity Financing
Facility, and up to approximately $2.4 million upon exercise of the warrant. Each draw down election
is limited to a maximum of 3% of our market capitalization at the time of the election, and cannot
in any case exceed $10 million. We must wait at least five trading days after the end of a fifteen
trading day draw down period before we can commence the next draw down. We are obligated to use 40%
of any funds we receive from sales of shares under the Committed Equity Financing Facility, but not
funds we receive upon exercise of the warrant, to prepay any outstanding interest and principal under
promissory notes we sold in December 2004 with an aggregate principal amount of $2 million. Such
notes accrue interest at 8% per year and mature on December 31, 2006. A family trust
affiliated with Mr. Elwood G. Norris, our Chairman, purchased a note in the principal
amount of $500,000 in the December note financing, and such note will be pre-paid pro rata
with the other notes sold in the note financing. Except for the note held by the trust
affiliated with Mr. Norris, none of our directors or executive officers nor Kingsbridge hold
any of the notes sold in the December 2004 financing.</FONT></P>


<P align=center><FONT face="Times New Roman, Times, serif" size=2>-15-</FONT></P>
<HR noShade SIZE=5>

<P style="PAGE-BREAK-BEFORE: always">
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
amounts set forth above indicate the gross proceeds we may receive from our Committed Equity Financing
Facility with Kingsbridge. Any proceeds we receive upon the sale of shares of common stock to Kingsbridge
under the Committed Equity Financing Facility, other than proceeds used to prepay any outstanding
interest and principal under the promissory notes we sold in December 2004, will be used for working
capital and for general corporate purposes. The table forth below is our proposed use of these proceeds,
assuming the promissory notes we sold in December 2004 are not prepaid from other sources. However,
our actual expenditures may vary substantially depending on various factors, many of which cannot
be predicted at this time. Accordingly, subject to the requirement to prepay any outstanding interest
and principal under the promissory notes we sold in December 2004, we reserve the right to reallocate
all or a substantial portion of any part of the proceeds as our management deems appropriate to meet
future business conditions. </FONT></P>
<TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0 WIDTH=100%>
  <TR VALIGN=Bottom>
    <TH><FONT FACE="Times New Roman, Times, serif" SIZE=1></FONT></TH>
    <TH COLSPAN=2><FONT FACE="Times New Roman, Times, serif" SIZE=1>Proceeds if<BR>
      $5,000,000<BR>
      is Sold</FONT></TH>
    <TH><font size="1" face="Times New Roman, Times, serif"></font></TH>
    <TH COLSPAN=2><FONT FACE="Times New Roman, Times, serif" SIZE=1>Proceeds if<BR>
      $10,000,000<BR>
      is Sold</FONT></TH>
    <TH><font size="1" face="Times New Roman, Times, serif"></font></TH>
    <TH COLSPAN=2><FONT FACE="Times New Roman, Times, serif" SIZE=1>Proceeds if<BR>
      $20,000,000<BR>
      is Sold</FONT></TH>
    <TH><font size="1" face="Times New Roman, Times, serif"></font></TH>
    <TH COLSPAN=2><FONT FACE="Times New Roman, Times, serif" SIZE=1>Proceeds if<BR>
      $25,000,000<BR>
      is Sold</FONT></TH>
    <TH><font size="1" face="Times New Roman, Times, serif"></font></TH>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT bgcolor="#eaf9e8"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Gross proceeds</FONT></TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=5% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 5,000,000</FONT></TD>
    <TD WIDTH=3% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=5% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 10,000,000</FONT></TD>
    <TD WIDTH=3% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=5% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 20,000,000</FONT></TD>
    <TD WIDTH=3% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=5% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 25,000,000</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Discount (assumed at 8%)</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>400,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>800,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,600,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2,000,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Flagstone Securities fee</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>200,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>350,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>525,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>600,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Diligence fee to Kingsbridge</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>96,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>96,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>96,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>96,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Prepayment of notes (interest excluded)</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2,000,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2,000,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2,000,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2,000,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Legal, accounting &amp; administrative fees</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>130,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>130,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>130,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>130,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Net proceeds</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 2,174,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 6,624,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 15,649,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 20,174,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><u>Estimated Use of Proceeds</u></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Sales and marketing expenses</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 1,500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 3,500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 4,500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>General and administrative expenses</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>500,000</FONT></TD>

    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>3,500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4,500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Research and development expenses</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>750,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2,300,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>6,000,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>7,750,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Financing of accounts receivable</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>212,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>662,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,325,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,712,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Financing of inventory</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>212,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>662,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,324,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,712,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="1" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Total</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 2,174,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 6,624,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 15,649,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 20,174,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><hr noshade size="2" color=black></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
</TABLE>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a6"></a>THE COMMITTED EQUITY FINANCING FACILITY </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On December 14, 2004, we entered into a
Committed Equity Financing Facility with Kingsbridge Capital Limited, pursuant to which Kingsbridge
committed, subject to certain significant limitations and conditions precedent, to purchase up to
$25 million of our common stock. As part of this arrangement, we issued a warrant to Kingsbridge
to purchase 275,000 shares of our common stock at a price of $8.60 per share. The warrant is exercisable
beginning June&nbsp;14, 2005 and until June&nbsp;14, 2010. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Until December&nbsp;14, 2006 we may, from
time to time, at our sole discretion and subject to various limitations and conditions precedent
that we must satisfy, require Kingsbridge to purchase newly-issued shares of our common stock at
a price that is between 88% and 92% of the volume weighted average of the price of our common stock
for each of the fifteen trading days following our election to sell, or draw down, shares. Such discount
will be determined as follows: </FONT></P>
<div align="center"></div>
<TABLE width="90%" border="0" align="center" cellPadding="0" cellSpacing="0">
  <TR>
    <TD vAlign=bottom nowrap><P><font size="2" face="Times New Roman, Times, serif"><B>VWAP*</B></font></P></TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom><P><font size="2" face="Times New Roman, Times, serif"><B>Applicable Discount To VWAP</B></font></P></TD>
  </TR>
  <TR>
    <TD vAlign=bottom nowrap><hr align="left" width="50" size="1" noshade color=black></TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom><hr align="left" width="200" size="1" noshade color=black></TD>
  </TR>
  <TR bgcolor="#eaf9e8">
    <TD width="60%" vAlign=bottom nowrap><P><font size="2" face="Times New Roman, Times, serif">At or greater than $3.00 per share, but less than $5.00 per share</font></P></TD>
    <TD width="2%" vAlign=bottom bgcolor="#eaf9e8">&nbsp;</TD>
    <TD vAlign=bottom nowrap bgcolor="#eaf9e8"><P><font size="2" face="Times New Roman, Times, serif">12%</font></P></TD>
  </TR>
  <TR>
    <TD vAlign=bottom nowrap><P><font size="2" face="Times New Roman, Times, serif">At or greater than $5.00 per share but less that $10.00 per share</font></P></TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom><P><font size="2" face="Times New Roman, Times, serif">10%</font></P></TD>
  </TR>
  <TR bgcolor="#eaf9e8">
    <TD vAlign=bottom nowrap><P><font size="2" face="Times New Roman, Times, serif">At or greater than $10.00 per share</font></P></TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom><P><font size="2" face="Times New Roman, Times, serif">8%</font></P></TD>
  </TR>
</TABLE>
<P><FONT face="Times New Roman, Times, Serif" size=2><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;* &#147;VWAP&#148; means the volume weighted
average price of our common stock during a trading day as reported by Bloomberg, L.P. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-16-</FONT></P>
<HR noShade SIZE=5>

<P style="PAGE-BREAK-BEFORE: always">
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The maximum number of shares that we are
permitted to issue pursuant to the Committed Equity Financing Facility is 8,333,333. However, without
stockholder approval, the rules of the NASDAQ Stock Market prohibit us from selling more than 20%
of our issued and outstanding common stock measured as of the time at which we entered into a material
definitive agreement with Kingsbridge. There were 19,808,819 common shares outstanding on December&nbsp;14,
2004. This 20% limit applies to any shares we may issue pursuant to the Committed Equity Financing
Facility, including any shares that we may issue in payment of liquidated damages, and upon the exercise
of the warrant. Therefore, the maximum number of shares that we may issue to Kingsbridge is 3,959,782,
of which 3,684,782 may be issued under the Committed Equity Financing Facility, including any shares
that we may issue in payment of liquidated damages, and 275,000 may be issued upon exercise of the
warrant. We are not required to seek stockholder approval, and there are no penalties or fees if
we do not seek stockholder approval, of the Committed Equity Financing Facility. We may in our discretion
seek stockholder approval for the issuance of additional shares if our sale of 3,684,782 shares to
Kingsbridge under the Committed Equity Financing Facility does not exhaust the $25 million commitment.
We do not currently intend to issue shares in excess of the maximum number that we can issue without
stockholder approval and this prospectus relates only to the 3,959,782 shares that we may issue without
stockholder approval under our agreement.</FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will exercise our right to draw down the Committed Equity Financing Facility, if and to the extent
available, at such times as we deem appropriate. We are obligated to use 40% of the proceeds we may
receive from the Committed Equity Financing Facility to prepay any outstanding interest and principal
on the promissory notes we sold in December 2004 with an aggregate principal amount of $2 million.
A family trust affiliated with Mr. Elwood G. Norris, our Chairman, purchased a note in the principal
amount of $500,000 in the December note financing, and such note will be pre-paid pro rata with the
other notes sold in the note financing. Except for the note held by the trust affiliated with Mr.
Norris, none of our directors or executive officers nor Kingsbridge hold any of the notes sold in the
December 2004 financing. </FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We can elect to sell shares in amounts
up to a maximum of 3% of our market capitalization at the time of the election, provided that in
no event can a single election exceed $10 million. For each election to sell shares to Kingsbridge,
we select the lowest threshold price at which our stock may be sold, but the threshold price cannot
be lower than $3.00 per share. In addition, we may not require Kingsbridge to purchase shares of
our common stock under the Committed Equity Financing Facility if on each settlement date such purchase
would result in Kingsbridge beneficially owning more that 9.9% of our common stock. For example,
using 21,334,739 shares of common stock outstanding, which is the number of shares of our common
stock outstanding as of May 11, 2005, Kingsbridge would not be able to own more than 2,112,139
shares of our common stock. The 9.9% beneficial ownership limitation is determined on, and based on
the amount of our common stock outstanding on, each settlement date.  As the number
of shares outstanding on each settlement date increases, Kingsbridge may be required to
purchase more shares of our common stock during a draw down period than would have been
apparent on the date that we sent the draw down notice to Kingsbridge.
This 9.9% limit includes only shares purchased pursuant to the Committed
Equity Financing Facility, shares we may issue as liquidated damages, and common stock issuable upon
exercise of the warrant. There is no restriction on Kingsbridge&#146;s acquisition of shares from
other sources, so Kingsbridge may beneficially own more than 9.9% of our common stock at any one
time. We do not have any agreement with Kingsbridge regarding the distribution of the shares it may
purchase under the Committed Equity Financing Facility, although Kingsbridge has indicated that it
intends to promptly sell any stock it receives under the Committed Equity Financing Facility. If
Kingsbridge does not sell all of the shares of common stock it purchases under the Committed Equity
Financing Facility, depending on the price of our common stock, the 9.9% limit could limit Kingsbridge&#146;s
obligation to purchase the full $25 million commitment.</FONT></P>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
cannot predict the number of shares of common stock that will be issued pursuant to the Committed
Equity Financing Facility, in part, because the purchase price of the shares will fluctuate based
on prevailing market conditions and we have not determined the total dollar amount of shares we will
elect to sell. Nonetheless, we can estimate the number of shares of common stock that will be issued
using certain assumptions. Assuming we elect to sell $10 million of our common stock and the volume
weighted average price of our common stock is $5.52 per share, which is the closing sale price reported
on the NASDAQ SmallCap Market on May 11, 2005, we would issue 2,012,882 shares of common stock
to Kingsbridge, representing 8.6% of our common stock outstanding as of May 11, 2005, after giving
effect to the issuance to Kingsbridge. The above estimate of
the number of shares to be sold assumes that our stock price would remain constant during
the fifteen trading day draw down period. This assumption is not realistic, particularly
since during the fifteen trading day draw down period, Kingsbridge is permitted to sell
the shares to be issued with respect to each trading day once the discount purchase price
for such day (and therefore the number of shares to be purchased for such day) is
determined. These permitted sales during a draw down period may cause the volume weighted
average price of our common stock to decline on immediately subsequent days, resulting in
the sale of additional shares to Kingsbridge on immediately subsequent days for the same
monetary proceeds to us. The further sale of shares priced on those immediately subsequent
days could then cause further price declines on later days, resulting in the sale of
increasing numbers of shares for the same monetary proceeds as the draw down period progresses.
Under this assumption, we would also pay Flagstone Securities, LLC a fee of $350,000,
determined as described below.</FONT></P>



<P align=center><FONT face="Times New Roman, Times, serif" size=2>-17-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following table sets forth the amount
of proceeds we would receive from Kingsbridge from the sale of shares of our common stock offered
by this prospectus at varying purchase prices assuming 21,334,739 shares of our common stock outstanding,
which is the number of shares of our common stock outstanding as of May 11, 2005: </FONT></P>


<TABLE WIDTH=100% BORDER=0 align="center" CELLPADDING=0 CELLSPACING=0>
  <TR VALIGN=Bottom>
    <TD colspan="2" ALIGN=RIGHT><div align="center"><font size="1" face="Times New Roman, Times, serif"><B>Assumed Average Purchase Price</B></font></div></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font>      <div align="center"><font size="1" face="Times New Roman, Times, serif"><B>Assumed VWAP</B></font></div></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD ALIGN=RIGHT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD ALIGN=RIGHT nowrap><div align="center"><font size="1" face="Times New Roman, Times, serif"><B>Number of Shares to<BR>
        be Issued if Full<BR>
        Purchase (1)</B></font></div></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD ALIGN=RIGHT nowrap><div align="center"><font size="1" face="Times New Roman, Times, serif"><B>Percentage Outstanding<BR>
        After Giving Effect to the<BR>
        Issuance to Kingsbridge (2)</B></font></div></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font>      <div style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Fees Payable</B></font></div>      <div style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>to</B></font></div>      <div style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Flagstone (3)</B></font></div></TD>
    <TD ALIGN=LEFT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD colspan="2" ALIGN=RIGHT><font size="1" face="Times New Roman, Times, serif">&nbsp;</font>      <div style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Net Proceeds</B></font></div>      <div style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>from the Sale of<BR>
    Shares to Kingsbridge(4)</B></font></div></TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT nowrap>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT nowrap>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
    <TD colspan="2" ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=6% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 3.00</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=6% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 3.41</FONT></TD>
    <TD WIDTH=3% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=12% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>3,684,782</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=10% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>14.7</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>%</FONT></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=8% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 371,087</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=8% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 10,683,259</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 4.86</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 5.52</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(5)</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>3,684,782</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>14.7</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>%</FONT></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 493,488</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 17,405,709</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 8.00</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 8.89</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>3,125,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>12.8</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>%</FONT></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 600,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 24,400,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 10.00</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 10.87</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2,500,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>10.5</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>%</FONT></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 600,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 24,400,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 15.00</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 16.30</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,666,666</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>7.2</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>%</FONT></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 600,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 24,400,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 20.00</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 21.74</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1,250,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>5.5</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>%</FONT></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 600,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 24,400,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 40.00</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 43.48</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>625,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>2.8</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>%</FONT></TD>
    <TD ALIGN=RIGHT>&nbsp;</TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 600,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 24,400,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
</TABLE>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) Based upon a maximum of 3,684,782 shares
for purchase by Kingsbridge registered in the registration statement which includes this prospectus.
Assumes no shares are issued to Kingsbridge in lieu of paying liquidated damages that may be owed to Kingsbridge in the event that
the availability of the registration statement, of which this prospectus is a part, is suspended and does not include the 275,000 shares that may be issued upon exercise of the warrant. </FONT></P>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) Based upon 21,334,739 shares outstanding
as of May 11, 2005.</FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) Fee arrangement with Flagstone Securities,
LLC discussed below. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4) Net proceeds after fees payable to Flagstone.
</FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5) Closing sale price reported on the
NASDAQ SmallCap Market on May 11, 2005. </FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Flagstone Securities, LLC served as a consultant
for the Committed Equity Financing Facility. Flagstone is a registered broker-dealer. We entered
into a letter agreement with Flagstone dated December&nbsp;13, 2004, whereby we agreed to pay to
Flagstone cash payments equal to 4% of the first $5,000,000 raised under the Committed Equity Financing
Facility; 3% for the second $5,000,000 raised under the Committed Equity Financing Facility; 2% for
the third $5,000,000 raised under the Committed Equity Financing Facility; and 1.5% for any additional
amounts raised under the Committed Equity Financing Facility. Proceeds obtainable upon Kingsbridge&#146;s
exercise of the warrant are not included in the foregoing amounts. We did not pay Flagstone any fees
in connection with entering into the Committed Equity Financing Facility or upon the issuance of
the warrant; and Flagstone is not entitled to any payments or fees upon the exercise of the warrant.
The letter agreement is effective until December 13, 2005, but, we are obligated to pay Flagstone
these fees for the duration of the Committed Equity Financing Facility. Flagstone provided consulting
services to us consisting of introducing us to Kingsbridge and providing research and information
on the terms of other equity financing facilities. In addition, Flagstone has and will continue to
arrange and attend meetings with investors and analysts regarding our company.</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The issuance of our common stock under
the Committed Equity Financing Facility will have no effect on the rights or privileges of existing
holders of common stock except that the economic and voting interests of each stockholder will be
diluted as a result of such issuance. Although the number of shares of common stock that stockholders
presently own will not decrease, such shares will represent a smaller percentage of our total shares
that will be outstanding after such events. If we satisfy the conditions that allow us to draw down
the entire $25 million available under the Committed Equity Financing Facility, and we choose to
do so, then generally, as the market price of our common stock decreases, the number of shares we
will have to issue upon each draw down on the Committed Equity Financing Facility increases, to a
maximum of 3,684,782 shares without stockholder approval. Drawing down upon the Committed Equity
Financing Facility when the price of our common stock is decreasing will have an additional dilutive
effect to the ownership percentage of current stockholders and may result in additional downward
pressure on the price of our common stock. </FONT></P>


<P align="center"><FONT face="Times New Roman, Times, serif" size=2>-18-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following is a summary of the material
conditions that must be met before Kingsbridge is obligated to buy any shares of our common stock
pursuant to a draw down, none of which are within the control of Kingsbridge: </FONT></P>

<table width="100%" border="0" cellpadding="0" cellspacing="0">
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">Each of the representations and warranties we made in our agreement with Kingsbridge, which we refer to as the purchase agreement, must be true and correct in all material respects as of the date when made and as of the draw down exercise date as though made at that time. One of the representations provides that no material and adverse event or series of events has or have occurred affecting our business, operations, properties or financial condition. </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">We must have complied in all material respects with our obligations under the purchase agreement. </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">The registration statement, of which this prospectus is a part, must be effective and available for use by Kingsbridge. </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">We cannot have knowledge of any event more likely than not to cause the registration statement to be unavailable to Kingsbridge during the fifteen day draw down period. </font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
  </tr>
  <tr align="left" valign="top">
    <td><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">Trading in our common stock must not have been suspended by the Commission, the NASDAQ SmallCap Market or the NASD, and trading in securities generally on the NASDAQ SmallCap Market must not have been suspended or limited. </font></td>
  </tr>
</TABLE>
<BR>


<table width="100%" border="0" cellpadding="0" cellspacing="0">
  <tr align="left" valign="top">
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></td>
    <td width="30"><font size="2" face="Times New Roman, Times, serif">&#149; </font></td>
    <td><font size="2" face="Times New Roman, Times, serif">The number of shares of our common stock beneficially owned by Kingsbridge,
which includes the shares of our common stock that may be issued upon exercise of the warrant and in payment of liquidated damages, together
with those shares that we propose to sell to Kingsbridge in connection with a draw down, cannot exceed 9.9% of the total amount of our
common stock that would be outstanding on each settlement date during a draw down period. This 9.9% limit does not apply to any shares that Kingsbridge may purchase other than through our agreement with Kingsbridge. </font></td>
  </tr>
</table>


<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;There is no guarantee that we will be able to meet these and other conditions under the purchase agreement or that we will be able to draw down any portion of the $25 million commitment. Even if we meet these and other conditions, the election to draw down amounts is at our sole discretion and we are not obligated to sell any shares to Kingsbridge. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;During the two-year term of the proposed Committed Equity Financing Facility, without the prior written consent of Kingsbridge, we are prohibited from issuing securities that are, or may become, convertible or exchangeable into shares of common stock where the purchase, conversion or exchange price for such common stock is determined using a floating or otherwise adjustable discount to the market price of the common stock (including pursuant to an equity line or other financing that is substantially similar to an equity line with an investor other than Kingsbridge).</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We also entered into a registration rights agreement with Kingsbridge in connection with the Committed Equity Financing Facility. As contemplated by the registration rights agreement, we have filed a registration statement, of which this prospectus is a part, with the Commission relating to the resale by Kingsbridge of 3,684,782 shares of common stock purchased by Kingsbridge under the purchase agreement or issued to Kingsbridge as a result of the exercise of the warrant. In addition, we are including in the registration statement, of which this prospectus is a part, shares that we may issue in payment of liquidated damages in the event that a registration statement is not available for the resale of securities purchased by Kingsbridge under the Committed Equity Financing Facility. The effectiveness of such registration statement is a condition precedent to our ability to
sell common stock to Kingsbridge under the purchase agreement. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;During the term of the Committed Equity Financing Facility, Kingsbridge and its affiliates are prohibited from entering into any hedging transaction or engaging in any short selling with respect to our common stock. Kingsbridge may however sell the shares to be purchased with respect to each trading day during a draw down period once the purchase price and number of shares for such trading day have been determined, even though such determination will occur up to seven trading days before we are required to settle such purchase of shares. If Kingsbridge elects to make these permitted sales, it will settle these sale positions after it receives the shares from us in accordance with the terms of Kingsbridge&#146;s agreements with its resale brokers. Sales by Kingsbridge of shares purchased from us in a draw down could cause a significant downward pressure on the price of our
common stock which could encourage short sales by third parties, as discussed more fully in the &#147;Risk Factors.&#148;&nbsp;Such short sales could place additional downward pressure on the price of our common stock by increasing the number of shares being sold, which could contribute to the further decline of our stock price.</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The terms of the Committed Equity Financing Facility require us to pay liquidated damages in the event that a registration statement is not available for the resale of securities purchased by Kingsbridge under the Committed Equity Financing Facility. Except for certain permitted periods of ineffectiveness described below, we are obligated to pay to Kingsbridge an amount, up to $2.5 million, equal to the number of shares purchased under the Committed Equity Financing Facility and held by Kingsbridge at the date the registration statement becomes unavailable, multiplied by any positive difference in price between the volume weighted average price on the trading day prior to such period of unavailability and the volume weighted average price on the first trading day after the period of unavailability. We may, in lieu of paying such amounts, offer to repurchase the securities
held by Kingsbridge for a price equal to the volume weighted average price on the trading day prior to such period of unavailability. </FONT></P>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-19-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are permitted to suspend the availability of the registration statement for resale of the shares purchased by Kingsbridge if there is material undisclosed information then existing or if we intend to file another registration statement with the SEC. However, we are permitted to suspend the use of the registration statement for only up to 30 days during any calendar year, and no more than six times in any 12 month period. In the event that we exercise this right of suspension within fifteen trading days following any settlement date for the purchase of our stock under the Committed Equity Financing Facility, we must pay to Kingsbridge as liquidated damages a percentage of the decline in value, if any, of shares purchased during the most recent draw down period and held by Kingsbridge, as follows: 75% if such notice of suspension is delivered prior to the fifth trading day
after a settlement date, 50% if such notice of suspension is delivered on or after the fifth and prior to the tenth trading day after a settlement date, and 25% if such notice of suspension is delivered on or after the tenth and prior to the fifteenth trading day after a settlement date. The amount of such payments for any one period of suspension may not exceed $1.75 million. We may, in lieu of paying such amounts, offer to repurchase the securities held by Kingsbridge for a price equal to the volume weighted average price on the trading day prior to such period of ineffectiveness. We may also elect to pay such amounts in shares of common stock valued at the market value on the first trading day after such permitted suspension ends. </FONT></P>

<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a7"></a>SELLING STOCKHOLDER </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following table sets forth certain information regarding beneficial ownership of our common stock by Kingsbridge as of December&nbsp;31, 2004. Kingsbridge has not had a material relationship with our company within the past three years other than the Committed Equity Financing Facility described above. </FONT></P>

<TABLE width="90%" border="0" align="center" cellPadding="0" cellSpacing="0">
  <TR>
    <TD width="13%" vAlign=bottom><P><font size="1" face="Times New Roman, Times, serif"><B>Name of Selling Stockholder</B></font></P></TD>
    <TD width="11%" vAlign=bottom nowrap><P style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Number of<BR>
        Shares of<BR>
        Common Stock<BR>
        Beneficially<BR>
        Owned Prior<BR>
    to Offering</B></font></P></TD>
    <TD vAlign=bottom><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="11%" vAlign=bottom nowrap><P style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Percent of<BR>
        Outstanding<BR>
        Shares of<BR>
        Common Stock<BR>
        Beneficially<BR>
        Owned Prior<BR>
    to Offering</B></font></P></TD>
    <TD vAlign=bottom><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="12%" vAlign=bottom nowrap><P style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Number of Shares<BR>
        of Common Stock<BR>
        to be Offered<BR>
        Pursuant to this<BR>
    Prospectus(1)</B></font></P></TD>
    <TD vAlign=bottom><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="11%" vAlign=bottom nowrap><P style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Number of<BR>
        Shares of<BR>
        Common Stock<BR>
        Beneficially<BR>
        Owned After the<BR>
    Offering (2)</B></font></P></TD>
    <TD vAlign=bottom><font size="1" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="15%" vAlign=bottom nowrap><P style="TEXT-ALIGN: center" align=center><font size="1" face="Times New Roman, Times, serif"><B>Percent of<BR>
        Outstanding<BR>
        Shares of<BR>
        Common Stock<BR>
        Beneficially<BR>
        Owned After<BR>
    the Offering (2)</B></font></P></TD>
    <TD vAlign=bottom>&nbsp;</TD>
  </TR>
  <TR>
    <TD vAlign=bottom colSpan=11><HR align=center width="100%" color=black noShade SIZE=1>
    </TD>
  </TR>
  <TR>
    <TD width="30%" vAlign=bottom><P><font size="2" face="Times New Roman, Times, serif">Kingsbridge Capital Limited (3)</font></P></TD>
    <TD width="10%" vAlign=bottom><P style="TEXT-ALIGN: center" align=center><font size="2" face="Times New Roman, Times, serif">&#151;</font></P></TD>
    <TD width="2%" vAlign=bottom><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="10%" vAlign=bottom><P style="TEXT-ALIGN: center" align=center><font size="2" face="Times New Roman, Times, serif">&#151;%</font></P></TD>
    <TD width="2%" vAlign=bottom><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="10%" vAlign=bottom><P style="TEXT-ALIGN: center" align=center><font size="2" face="Times New Roman, Times, serif">3,959,782</font></P></TD>
    <TD width="2%" vAlign=bottom><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="10%" vAlign=bottom><P style="TEXT-ALIGN: center" align=center><font size="2" face="Times New Roman, Times, serif">&#151;</font></P></TD>
    <TD width="2%" vAlign=bottom><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="10%" vAlign=bottom><P style="TEXT-ALIGN: center" align=center><font size="2" face="Times New Roman, Times, serif">&#151;%</font></P></TD>
    <TD width="2%" vAlign=bottom>&nbsp;</TD>
  </TR>
  <TR>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
    <TD vAlign=bottom>&nbsp;</TD>
  </TR>
</TABLE>

<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD colspan="2" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#151;&#151;&#151;&#151;</font><font size="2" face="Times New Roman, Times, serif">&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;</font></TD>
  </TR>
  <TR align="left">
    <TD width="4%" vAlign=top><font size="2" face="Times New Roman, Times, serif">(1) </font></TD>
    <TD width="96%" vAlign=top><font size="2" face="Times New Roman, Times, serif">Includes the shares of common stock which are the subject of this prospectus as follows: 3,684,782 shares of common stock issuable in connection with the Committed Equity Financing Facility, including any shares that we may issue as payment of liquidated damages, and 275,000 shares of common stock that may be acquired by Kingsbridge upon exercise of its warrant. </font></TD>
  </TR>
  <TR align="left">
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR align="left">
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">(2) </font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">Assumes that all shares included in this prospectus are sold and that Kingsbridge does not acquire any additional shares of common stock. </font></TD>
  </TR>
  <TR align="left">
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>
  <TR align="left">
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">(3) </font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">Valentine O&#146;Donoghue and Adam Gurney have shared voting and investment control of the securities held by Kingsbridge and Kingsbridge does not accept third party investments. </font></TD>
  </TR>
</TABLE>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a8"></a>PLAN OF DISTRIBUTION </B></FONT></P>


<!-- MARKER FORMAT-SHEET="Para Indent" -->
<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">We
are registering 3,959,782 shares of common stock under this prospectus on behalf
of Kingsbridge. All or a portion of the shares offered hereby by Kingsbridge may
be delivered and/or sold in transactions from time to time on the NASDAQ
SmallCap Market, or another national securities exchange or quotation service on
which our common stock trades, on the over-the-counter market, in
privately-negotiated transactions, or a combination of such methods of sale, at
fixed prices, market prices prevailing at the time, prices related to such
prevailing prices or negotiated prices. Kingsbridge may effect such transactions
by selling to or through one or more broker-dealers, and such broker-dealers may
receive compensation in the form of concessions or commissions from Kingsbridge.
These concessions or commissions as to any particular broker-dealer may be in
excess of those customary in the types of transactions involved. Kingsbridge is
an &#147;underwriter&#148; within the meaning of the Securities Act. We have agreed to
indemnify Kingsbridge with respect to the shares offered hereby against certain
liabilities including certain liabilities under the Securities Act, or, if such
indemnity is unavailable, to contribute toward amounts required to be paid for
such liabilities. </font></P>

<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Any
broker-dealer participating in such transactions as agent may receive
commissions or concessions from Kingsbridge and, it acts as agent for the
purchaser of such shares, from such purchaser. Broker-dealers may agree with
Kingsbridge to sell a specified number of shares at a stipulated price per
share, and, to the extent such a broker-dealer is unable to do so acting as
agent for Kingsbridge, to purchase as principal any unsold shares at the price
required to fulfill the broker-dealer commitment to Kingsbridge. Broker-dealers
who acquire shares as principal may resell such shares from time to time in
transactions on the NASDAQ SmallCap Market, or another national securities
exchange or quotation service on which our common stock trades, on the
over-the-counter market, in privately-negotiated transactions or otherwise at
fixed prices, market prices prevailing at the time of sale, prices related to
such prevailing prices or negotiated prices, and in connection with such resales
may pay to or receive from the purchasers of such shares commissions computed as
described above. Transactions by broker-dealers may include crosses, which are
transactions in which the same broker acts as agent on both sides of the trade,
and block transactions, and may involve sales to and through other
broker-dealers, including transactions of the nature described above. To the
extent required under the Securities Act, a supplemental prospectus will be
filed, disclosing:</font></P>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-20-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
name of any such broker-dealers; &nbsp; &nbsp; &nbsp; </FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
number of shares involved; &nbsp; &nbsp; &nbsp; </FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
price at which such shares are to be sold; &nbsp; &nbsp; &nbsp; </FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
commissions paid or concessions allowed to such broker-dealers,  where
applicable; and</FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> other
facts material to the transaction.  </FONT></TD>
</TR>
</TABLE>
<BR>


<FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Kingsbridge
and any other persons participating in the sale or distribution of the shares
will be subject to the applicable provisions of the Securities Exchange Act of
1934 and the rules and regulations under such Act, including, without
limitation, Regulation M. These provisions may restrict certain activities of,
and limit the timing of, purchases by Kingsbridge or other persons or entities.
Furthermore, under Regulation M, persons engaged in a distribution of securities
are prohibited from simultaneously engaging in market making and certain other
activities with respect to such securities for a specified period of time prior
to the commencement of such distributions, subject to specified exceptions or
exemptions. All of these limitations may affect the marketability of the shares.
</font>
<p><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
Kingsbridge will pay all commissions, transfer taxes, and certain other expenses
associated with the resale of securities. The shares offered by this prospectus
are being registered to fulfill our contractual obligation to Kingsbridge and we
have paid the expenses of the preparation of this prospectus. </font></p>
<p><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">We
have agreed to reimburse Kingsbridge for reasonable attorneys fees and expenses
incurred by Kingsbridge in connection with entry into and amendments of our
agreements with Kingsbridge, any communications with the SEC, and any actions by
Kingsbridge to enforce its agreements. We have also agreed to pay Kingsbridge
all reasonable due diligence expenses it incurs during the term of the agreement
(beginning January 2005), up to $12,000 per calendar quarter.</font></p>
<p><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
Kingsbridge may sell the shares to be purchased with respect to each trading day
during a draw down period once the purchase price and number of shares for such
trading day have been determined, even though such determination will occur up
to seven trading days before we are required to deliver shares in settlement of
such purchase. Once settlement occurs, Kingsbridge will deliver these securities
to close out such positions in accordance with the terms of Kingsbridge&#146;s
agreements with its resale brokers. Kingsbridge may also loan or pledge the
common stock to broker-dealers that in turn may sell these securities.</font></p>
<p><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
aggregate proceeds to Kingsbridge from the resale of the common stock offered by
this prospectus will be the purchase price of the common stock less discounts
and commissions, if any. Kingsbridge reserves the right to accept and, together
with its agents, to reject, in whole or in part, any proposed purchase of common
stock to be made directly or through agents. </font></p>
<p><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In
order to comply with the securities laws of some states, if applicable, the
common stock may be sold in these jurisdictions only through registered or
licensed brokers or dealers. The common stock may not be offered or sold in any
jurisdiction unless the offer and sale have been registered or qualified for
sale or an exemption is available and complied with. </font></p>
<p><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
Broker-dealers or agents that participate in the sale of the common stock may be
deemed to be &#147;underwriters&#148; within the meaning of Section&nbsp;2(11) of the
Securities Act. Profits on the sale of the common stock by Kingsbridge and any
commissions or concessions received by any broker-dealers or agents
might be deemed to be underwriting discounts and commissions under the
Securities Act. Kingsbridge will be subject to the prospectus delivery
requirements of the Securities Act. </font></p>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-21-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">

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<P ALIGN="LEFT"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">To
our knowledge, there are currently no plans, arrangements or understandings
between Kingsbridge and any underwriter, broker-dealer or agent regarding the
sale of the common stock. </font></P>
<P ALIGN="LEFT"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
Kingsbridge may decide not to sell any common stock described in this
prospectus. Any securities covered by this prospectus which qualify for sale
pursuant to Rule&nbsp;144 or Rule&nbsp;144A of the Securities Act may be sold under
Rule&nbsp;144 or Rule&nbsp;144A rather than pursuant to this prospectus. In addition,
Kingsbridge may transfer, devise or gift the common stock by other means not
described in this prospectus. </font></P>
<P ALIGN="LEFT"><font size="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</font>
<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
With respect to a particular offering of the common stock, to the extent
required by the Securities Act, an accompanying prospectus supplement or, if
appropriate, a post-effective amendment to the registration statement which
includes this prospectus, will be prepared and will set forth the following
information: </font></P>

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<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
specific common stock to be offered and sold; &nbsp; &nbsp; &nbsp; </FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
names of the selling stockholder ; &nbsp; &nbsp; &nbsp; </FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
respective purchase prices and public offering prices and other material terms  of the
offering; &nbsp; &nbsp; &nbsp; </FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> the
names of any participating agents, broker-dealers or underwriters; and &nbsp; &nbsp; &nbsp; </FONT></TD>
</TR>
</TABLE>
<BR>


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<TR VALIGN=TOP>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="4%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&#149; </FONT></TD>
<TD WIDTH="92%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"> any
applicable commissions, discounts, concessions and other items constituting,
compensation from the selling stockholder.  </FONT></TD>
</TR>
</TABLE>
<BR>



<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a9"></a>LEGAL MATTERS </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Certain legal matters relating to the offering will be passed upon for us by Sheppard, Mullin, Richter &amp; Hampton LLP, San Diego, California. Certain legal matters will be passed upon for any agents or underwriters by counsel for such agents or underwriters identified in the applicable prospectus supplement. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a10"></a>EXPERTS </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The financial statements and schedules incorporated by reference in this Prospectus have been audited by BDO Seidman, LLP, independent registered public accounting firm, to the extent and for the periods set forth in their report incorporated herein by reference, and are incorporated herein in reliance upon such report given the authority of said firm as experts in auditing and accounting. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a11"></a>WHERE YOU CAN FIND MORE INFORMATION </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This prospectus is part of a registration statement on Form S-3 that was filed with the SEC. This prospectus and any subsequent prospectus supplements do not contain all of the information in the registration statement. We have omitted from this prospectus some parts of the registration statement as permitted by the rules and regulations of the SEC. In addition, we file annual, quarterly and current reports, proxy statements and other information with the SEC. You may read and copy any documents that we have filed with the SEC at the SEC&#146;s Public Reference Room at 450 Fifth Street, N.W., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. The SEC also maintains an Internet site (http://www.sec.gov) that contains reports, proxy and information statements, and other information regarding issuers that file
electronically with the SEC. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-22-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B><a name="a12"></a>INFORMATION INCORPORATED BY REFERENCE </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We have elected to &#147;incorporate by reference&#148; certain information into this prospectus. By incorporating by reference, we can disclose important information to you by referring you to another document we have filed with the SEC. The information incorporated by reference is deemed to be part of this prospectus, except for information incorporated by reference that is superseded by information contained in this prospectus. This prospectus incorporates by reference the documents set forth below that we have previously filed with the SEC: </FONT></P>

<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR align="left">
    <TD width="30" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="30" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149; </font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">Annual Report on Form 10-K, as amended, for our fiscal year ended September 30, 2004; </font></TD>
  </TR>
  <TR align="left">
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
  </TR>


  <TR align="left">
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">Quarterly Reports on Form 10-Q, as amended, for the periods
ended December 31, 2004 and March 31, 2005; </font></TD>
  </TR>


</table>
<BR>



<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR align="left">
    <TD width="30" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="30" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">Current Reports on Form 8-K filed with the SEC on
November 22, 2004, December 17, 2004, January 18, 2005 (amended January 21, 2005), January 31, 2005, March 21, 2005, March
    24, 2005, March 25, 2005, April 1, 2005, and May 3, 2005 (with respect to disclosure made under Items 1.01 and 3.02 only); and </font></TD>
  </TR>
</table>
<BR>



<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR align="left">
    <TD width="30" vAlign=top><font size="2" face="Times New Roman, Times, serif">&nbsp;</font></TD>
    <TD width="30" vAlign=top><font size="2" face="Times New Roman, Times, serif">&#149;</font></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">Registration Statement on Form 10-SB, effective August 1, 1994 which includes a description of our common stock. </font></TD>
  </TR>
</TABLE>

<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We also incorporate by reference all documents we file pursuant to Section 13(a), 13(c), 14 or 15 of the Exchange Act after the date of the initial registration statement and prior to effectiveness of the registration statement. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents we file in the future pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus and prior to the termination of the offering are also incorporated by reference and are an important part of this prospectus. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You may obtain copies of these documents on the web site maintained by the SEC at <U>www.sec.gov</U>, or from us without charge (other than exhibits to such documents, unless such exhibits are specifically incorporated by reference into such documents) by contacting us at American Technology Corporation, 13114 Evening Creek Drive South, San Diego, California 92128, Attn: Director, Investor Relations. </FONT></P>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-23-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">

<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>PART II </B></FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>INFORMATION NOT REQUIRED IN PROSPECTUS </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2><B>ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION. </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following table sets forth our costs and expenses in connection with the registration for resale of our common stock. All of the amounts shown are estimates except the Securities and Exchange Commission (the &#147;Commission&#148;) registration fee. </FONT></P>


<TABLE WIDTH=70% BORDER=0 align="center" CELLPADDING=0 CELLSPACING=0>
  <TR VALIGN=Bottom>
    <TH COLSPAN=2><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TH>
    <TH COLSPAN=2 align="center"><FONT FACE="Times New Roman, Times, Serif" SIZE=1>AMOUNT</FONT></TH>
    <TH>&nbsp;</TH>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Commission Registration Fee</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD WIDTH=1% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD WIDTH=10% ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 4,393</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Printing and Related Fees</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 5,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Legal Fees and Expenses</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 90,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Accounting Fees and Expenses</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 20,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom bgcolor="#eaf9e8">
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Miscellaneous Expenses</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 1,607</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Total</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>$</FONT></TD>
    <TD ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> 121,000</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
</TABLE>


<P><FONT face="Times New Roman, Times, Serif" size=2><B>ITEM 15. LIABILITY AND INDEMNIFICATION OF DIRECTORS AND OFFICERS. </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As permitted by Delaware law, our Certificate of Incorporation provides that the we will indemnify our officers, directors, employees and agents against attorneys&#146; fees and other expenses and liabilities they incur to defend, settle or satisfy any civil or criminal action brought against them arising out of their association with or activities on behalf of us unless, in any such action, they are adjudged to have acted with gross negligence or to have engaged in willful misconduct. We may also bear the expenses of such litigation for any such persons upon their promise to repay such sums if it is ultimately determined that they are not entitled to indemnification. Such expenditures could be substantial and may not be recouped, even if we are so entitled. Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors,
officers or persons controlling us pursuant to the foregoing provisions, we have been informed that, in the opinion of the Commission, such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the General Corporation Law of Delaware, our Certificate of Incorporation excludes personal liability on the part of its directors to our company for monetary damages based upon any violation of their fiduciary duties as directors, except as to liability for any breach of the duty of loyalty, acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, acts in violation of Section 174 of the General Corporation Law of Delaware, or any transaction from which a director receives an improper personal benefit. This exclusion of liability does not limit any right which a director may have to be indemnified and does not affect any director&#146;s liability under federal or applicable state securities laws. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We currently have directors&#146; and officers&#146; liability insurance to provide our directors and officers with insurance coverage for losses arising from claims based on breaches of duty, negligence, errors and other wrongful acts. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2><B>ITEM 16. INDEX TO EXHIBITS. </B></FONT></P>

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  <TR VALIGN=Bottom>
    <td align="left"><font size="2" face="Times New Roman, Times, serif"><U>Number</U> </font></td>
    <td align="left">&nbsp;</td>
    <td align="left"><font size="2" face="Times New Roman, Times, serif"><U>Exhibit</U> </font></td>
    <TH align="left"></TH>
  </TR>
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    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT></TD>
  </TR>
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    <TD WIDTH=5% ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.1</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Certificate of Incorporation of American Technology Corporation (Delaware) dated March 1, 1992. Filed as</FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> Exhibit 2.1 on Form 10-SB effective August 1, 1994 and incorporated herein by reference.</FONT></TD>
    <TD WIDTH=1% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.2</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Amendment to Certificate of Incorporation of American Technology Corporation dated March 24, 1997 and filed with Delaware on April 22, 1997. Filed as Exhibit 3.1.1 on Form 10-QSB for the quarter ended March </FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>31, 1997, dated May 13, 1997 and incorporated herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.3</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Corrected Certificate of Designations of Series A Convertible Preferred Stock dated and filed with</FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> Delaware on August 25, 1997. Filed as Exhibit 3.1.3 on Form 8-K dated August 29, 1997 and incorporated </FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.4</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Corrected Certificate of Designations of Series B Convertible Preferred Stock filed with Delaware on </FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>December 23, 1998. Filed as Exhibit 3.1.4 on Form 10-KSB for the year ended September 30, 1998, dated </FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>December 29, 1998 and incorporated herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.5</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Corrected Certificate of Designation of Series C Preferred Stock filed with Delaware on April 19, 2000. Filed as Exhibit 3.1.5 on Form 8-K dated April 19, 2000 and incorporated herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.6</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Certificate of Designation of Series D Preferred Stock filed with Delaware on May 3, 2002. Filed as </FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Exhibit 3.1 on Form 10-Q for the quarter ended March 31, 2002, dated May 15, 2002 and incorporated </FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.7</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Certificate of Amendment to Certificate of Incorporation filed with Delaware on September 26, 2002. Filed as Exhibit 3.1.6 on Form 10-K for the year ended September 30, 2002, dated December 23, 2002 and incorporated herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.8</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Certificate of Designation of Series E Preferred Stock filed with Delaware on February 28, 2003. Filed</FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> as Exhibit 4.2 on Form 8-K dated March 6, 2003 and incorporated herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
</TABLE>

<P align=center><FONT face="Times New Roman, Times, serif" size=2>-24-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">
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  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.9</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Restated Bylaws of American Technology Corporation. Filed as Exhibit 3.1 on Form 10-Q for the quarter</FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2> ended </FONT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>December 31, 2004, filed on February 11, 2005 and incorporated herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT valign="top"></TD>
    <TD ALIGN=LEFT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.10</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Specimen Common Stock Certificate. Previously filed.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD WIDTH=5% ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>4.11</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD WIDTH=92% ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Registration Rights Agreement dated December 14, 2004 with Kingsbridge Capital Limited. Filed as Exhibit 10.2 on Form 8-K filed December 17, 2004 and incorporated herein by reference.</FONT></TD>
    <TD WIDTH=1% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>5.1</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Opinion of Sheppard Mullin Richter &amp; Hampton LLP. Previously filed.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>10.1</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Common Stock Purchase Agreement dated December 14, 2004 with Kingsbridge Capital Limited. Filed as Exhibit 10.1 on Form 8-K filed December 17, 2004 and incorporated herein by reference.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
</table>


<TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0 WIDTH=100%>
  <TR VALIGN=Bottom>
    <TD WIDTH=5% ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>10.2</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD WIDTH=92% ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Warrant dated December 14, 2004 in favor of Kingsbridge Capital Limited. Filed as Exhibit 4.1 to Form 8-K filed December 17, 2004 and incorporated herein by reference.</FONT></TD>
    <TD WIDTH=1% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>10.3</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Letter Agreement dated December 13, 2004 with Flagstone Securities. Previously filed.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>10.4</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Letter Agreement dated March 15, 2005 with Kingsbridge Capital Limited. Previously filed.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
</table>


<TABLE CELLPADDING=0 CELLSPACING=0 BORDER=0 WIDTH=100%>
  <TR VALIGN=Bottom>
    <TD WIDTH=5% ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>23.1</FONT></TD>
    <TD WIDTH=2% ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD WIDTH=92% ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Consent of Sheppard Mullin Richter &amp; Hampton LLP (included in Exhibit 5.1)</FONT></TD>
    <TD WIDTH=1% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>23.2</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Consent of BDO Seidman, LLP, Independent Registered Public Accounting Firm.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT>&nbsp;</TD>
  </TR>
  <TR VALIGN=Bottom>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>24.1</FONT></TD>
    <TD ALIGN=LEFT valign="top">&nbsp;</TD>
    <TD ALIGN=LEFT valign="top"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Power of Attorney. Previously filed.</FONT></TD>
    <TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
  </TR>
</TABLE>
<P><FONT face="Times New Roman, Times, Serif" size=2><B>ITEM 17. UNDERTAKINGS. </B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>We hereby undertake:</FONT></P>
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  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement: </font></P></TD>
  </TR>
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  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933; </font></P></TD>
  </TR>
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  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the
maximum aggregate offering price set forth in the &#147;Calculation of Registration Fee&#148; table in the effective registration statement; </font></P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(C) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement; </font></P></TD>
  </TR>
</TABLE>
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  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P><font size="2" face="Times New Roman, Times, serif">provided, however, that paragraphs (1)(A) and (1)(B) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports we filed with or furnished to the SEC pursuant to Section 13 or 15(d) of the Exchange Act of 1934 that are incorporated by reference in the registration statement. </font></P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. </font></P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering. </font></P></TD>
  </TR>
</TABLE>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-25-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">(4) That, for the purposes of determining any liability under the Securities Act of 1933, each filing of our annual report pursuant to Section 13(a) or 15(d) of the Exchange Act of 1934 that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. </font></P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">(5) That, for purposes of determining any liability under the Securities Act of 1933, the information omitted from the form of prospectus filed as part of the registration statement in reliance upon Rule 430A and contained in a form of prospectus we filed pursuant to Rule 424(b)(1) or (4) or 497(h) under the Securities Act of 1933 shall be deemed to be part of the registration statement as of the time it was declared effective. </font></P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4%; PADDING-TOP: 0in" vAlign=top width="4%"></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 96%; PADDING-TOP: 0in" vAlign=top width="96%"><P><font size="2" face="Times New Roman, Times, serif">(6) That, for the purposes of determining any liability under the Securities Act of 1933, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. </font></P></TD>
  </TR>
</TABLE>
<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to our directors, officers and controlling persons pursuant to the foregoing provisions, or otherwise, we have been advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act of 1933 and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than our payment of expenses incurred or paid by one of our directors, officers or controlling persons in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, we will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as expressed in the Securities Act of 1933 and will be governed by the final adjudication of such issue. </FONT></P>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-26-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><B>SIGNATURES</B></FONT></P>



<P><FONT face="Times New Roman, Times, Serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the
requirements of the Securities Act of 1933, the registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing
on Form S-3 and has duly caused this registration statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the city of San Diego,
State of California, on this 25th day of
May, 2005. </FONT></P>



<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD width="50%" vAlign=top></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">AMERICAN TECHNOLOGY CORPORATION </font></TD>
  </TR>
</TABLE>
<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111">
  <TR>
    <TD vAlign=top></TD>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD width="50%" vAlign=top></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">By: </font></TD>
    <TD vAlign=top style="border-bottom-style: solid; border-bottom-width: 1">
    /s/ <font size="2" face="Times New Roman, Times, serif">Elwood G. Norris</font></TD>
  </TR>
  <TR>
    <TD vAlign=top></TD>
    <TD vAlign=top width="4%"></TD>
    <TD vAlign=top><font size="2" face="Times New Roman, Times, serif">Elwood G. Norris, Chairman of the Board </font></TD>
  </TR>
  <TR>
    <TD vAlign=top></TD>
    <TD vAlign=top></TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
</TABLE>
<FONT face="Times New Roman, Times, serif" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1933, this registration statement has been signed below by the following persons on behalf of registrant in the capacities and on the dates indicated. </FONT>



<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111">
  <TR>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD width="50%" vAlign=top><font size="2" face="Times New Roman, Times, serif">Date: May
    25, 2005</font></TD>
    <TD vAlign=top width="4%"><font size="2" face="Times New Roman, Times, serif">By: </font></TD>
    <TD vAlign=top style="border-bottom-style: solid; border-bottom-width: 1">
    <font size="2">/s/ </font><font size="2" face="Times New Roman, Times, serif">
    Elwood G. Norris</font></TD>
  </TR>
  <TR>
    <TD vAlign=top width="50%"></TD>
    <TD vAlign=top width="4%"></TD>
    <TD vAlign=top style="border-top-style: solid; border-top-width: 1"><font size="2" face="Times New Roman, Times, serif">Elwood G. Norris, Chairman of the Board and Director<br>
    (Co-Principal Executive Officer)</font></TD>
  </TR>
</TABLE>
<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111">
  <TR>
    <TD width="50%" vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD width="50%" vAlign=top><font size="2" face="Times New Roman, Times, serif">Date: May
    25, 2005</font></TD>
    <TD vAlign=top width="4%"><font size="2" face="Times New Roman, Times, serif">By: </font></TD>
    <TD vAlign=top style="border-bottom-style: solid; border-bottom-width: 1">
    <font size="2">/s/ </font><font size="2" face="Times New Roman, Times, serif">Kalani
    Jones</font></TD>
  </TR>
  <TR>
    <TD vAlign=top width="50%"></TD>
    <TD vAlign=top width="4%"></TD>
    <TD vAlign=top style="border-top-style: solid; border-top-width: 1"><font size="2" face="Times New Roman, Times, serif">Kalani Jones, President, Chief Operating Officer and Director<br>
    (Co-Principal Executive Officer) </font></TD>
  </TR>
</TABLE>
<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111">
  <TR>
    <TD width="50%" vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD width="50%" vAlign=top><font size="2" face="Times New Roman, Times, serif">Date: May
    25, 2005</font></TD>
    <TD vAlign=top width="4%"><font size="2" face="Times New Roman, Times, serif">By: </font></TD>
    <TD vAlign=top style="border-bottom-style: solid; border-bottom-width: 1">
    <font size="2">/s/ </font><font size="2" face="Times New Roman, Times, serif">
    Michael A. Russell</font></TD>
  </TR>
  <TR>
    <TD vAlign=top width="50%"></TD>
    <TD vAlign=top width="4%"></TD>
    <TD vAlign=top style="border-top-style: solid; border-top-width: 1"><font size="2" face="Times New Roman, Times, serif">Michael A. Russell, Chief Financial Officer<br>
    (Principal Financial and Accounting Officer)</font></TD>
  </TR>
</TABLE>
<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111">
  <TR>
    <TD width="50%" vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD width="50%" vAlign=top><font size="2" face="Times New Roman, Times, serif">Date: May
    25, 2005</font></TD>
    <TD vAlign=top width="4%"><font size="2" face="Times New Roman, Times, serif">By: </font></TD>
    <TD vAlign=top style="border-bottom-style: solid; border-bottom-width: 1">
    <font size="2" face="Times New Roman, Times, serif">/s/&nbsp;&nbsp;*</font></TD>
  </TR>
  <TR>
    <TD vAlign=top width="50%"></TD>
    <TD vAlign=top width="4%"></TD>
    <TD vAlign=top style="border-top-style: solid; border-top-width: 1"><font size="2" face="Times New Roman, Times, serif">Richard M. Wagner, Director </font></TD>
  </TR>
</TABLE>
<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111">
  <TR>
    <TD width="50%" vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD width="50%" vAlign=top><font size="2" face="Times New Roman, Times, serif">Date: May
    25, 2005</font></TD>
    <TD vAlign=top width="4%"><font size="2" face="Times New Roman, Times, serif">By: </font></TD>
    <TD vAlign=top style="border-bottom-style: solid; border-bottom-width: 1">
    <font size="2" face="Times New Roman, Times, serif">/s/&nbsp;&nbsp;*</font></TD>
  </TR>
  <TR>
    <TD vAlign=top width="50%"></TD>
    <TD vAlign=top width="4%"></TD>
    <TD vAlign=top style="border-top-style: solid; border-top-width: 1"><font size="2" face="Times New Roman, Times, serif">David J. Carter, Director</font></TD>
  </TR>
</TABLE>
<TABLE cellSpacing="0" cellPadding="0" width="100%" border="0" style="border-collapse: collapse" bordercolor="#111111">
  <TR>
    <TD width="50%" vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
    <TD vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD width="50%" vAlign=top><font size="2" face="Times New Roman, Times, serif">Date: May
    25, 2005</font></TD>
    <TD vAlign=top width="4%"><font size="2" face="Times New Roman, Times, serif">By: </font></TD>
    <TD vAlign=top style="border-bottom-style: solid; border-bottom-width: 1">
    <font size="2" face="Times New Roman, Times, serif">/s/&nbsp;&nbsp;*</font></TD>
  </TR>
  <TR>
    <TD vAlign=top width="50%"></TD>
    <TD vAlign=top width="4%"></TD>
    <TD vAlign=top style="border-top-style: solid; border-top-width: 1"><font size="2" face="Times New Roman, Times, serif">Daniel Hunter, Director </font></TD>
  </TR>
</TABLE>
<BR>

<!-- MARKER FORMAT-SHEET="Signature (With By:)" -->
<TABLE WIDTH="100%" CELLPADDING=0 CELLSPACING=0 BORDER=0>
<TR VALIGN=TOP>
<TD WIDTH="5%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">* By:  </FONT></TD>
<TD WIDTH="95%"><u><FONT FACE="Times New Roman, Times, Serif" SIZE="2">/s/
Elwood G. Norris &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT>
</u></TD>
</TR>
</TABLE>


<TABLE WIDTH="100%" CELLPADDING=0 CELLSPACING=0 BORDER=0>
<TR VALIGN=TOP>
<TD WIDTH="5%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
<TD WIDTH="95%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">Elwood
G. Norris<BR>Attorney-In-Fact </FONT></TD>
</TR>
</TABLE>
<BR>
<BR>



<P>&nbsp;</P>
<U></U>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-27-</FONT></P>
<HR noShade SIZE=5>
<P style="PAGE-BREAK-BEFORE: always">
<P><a href="#toc"><u><FONT face="Times New Roman, Times, Serif" size=2><B>Table of Contents</B></FONT></u><FONT face="Times New Roman, Times, Serif" size=2><B></B></FONT></a><FONT face="Times New Roman, Times, Serif" size=2> &nbsp;</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>EXHIBIT INDEX </FONT></P>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P><U>Number</U> &nbsp;</P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P><U>Exhibit</U> &nbsp;</P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.1 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Certificate of Incorporation of American Technology Corporation (Delaware) dated March 1, 1992. Filed as Exhibit 2.1 on Form 10-SB effective August 1, 1994 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.2 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Amendment to Certificate of Incorporation of American Technology Corporation dated March 24, 1997 and filed with Delaware on April 22, 1997. Filed as Exhibit 3.1.1 on Form 10-QSB for the quarter ended March 31, 1997, dated May 13, 1997 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.3 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Corrected Certificate of Designations of Series A Convertible Preferred Stock dated and filed with Delaware on August 25, 1997. Filed as Exhibit 3.1.3 on Form 8-K dated August 29, 1997 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.4 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Corrected Certificate of Designations of Series B Convertible Preferred Stock filed with Delaware on December 23, 1998. Filed as Exhibit 3.1.4 on Form 10-KSB for the year ended September 30, 1998, dated December 29, 1998 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.5 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Corrected Certificate of Designation of Series C Preferred Stock filed with Delaware on April 19, 2000. Filed as Exhibit 3.1.5 on Form 8-K dated April 19, 2000 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.6 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Certificate of Designation of Series D Preferred Stock filed with Delaware on May 3, 2002. Filed as Exhibit 3.1 on Form 10-Q for the quarter ended March 31, 2002, dated May 15, 2002 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.7 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Certificate of Amendment to Certificate of Incorporation filed with Delaware on September 26, 2002. Filed as Exhibit 3.1.6 on Form 10-K for the year ended September 30, 2002, dated December 23, 2002 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.8 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Certificate of Designation of Series E Preferred Stock filed with Delaware on February 28, 2003. Filed as Exhibit 4.2 on Form 8-K dated March 6, 2003 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.9 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Restated Bylaws of American Technology Corporation. Filed as Exhibit 3.1 on Form 10-Q for the quarter ended December&nbsp;31, 2004, filed on February 11, 2005 and incorporated herein by reference. </P>
    </TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.10 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Specimen Common Stock Certificate. Previously filed.</P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>4.11 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Registration Rights Agreement dated December 14, 2004 with Kingsbridge Capital Limited. Filed as Exhibit 10.2 on Form 8-K filed December 17, 2004 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>5.1 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Opinion of Sheppard Mullin Richter &amp; Hampton LLP. Previously filed.</P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>10.1 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Common Stock Purchase Agreement dated December 14, 2004 with Kingsbridge Capital Limited. Filed as Exhibit 10.1 on Form 8-K filed December 17, 2004 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>10.2 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Warrant dated December 14, 2004 in favor of Kingsbridge Capital Limited. Filed as Exhibit 4.1 to Form 8-K filed December 17, 2004 and incorporated herein by reference. </P></TD>
  </TR>
</TABLE>


<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>10.3</P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Letter Agreement dated December 13, 2004 with Flagstone Securities. Previously filed.</P></TD>
  </TR>
</TABLE>

<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>10.4</P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Letter Agreement dated March 15, 2005 with Kingsbridge Capital Limited. Previously filed.</P></TD>
  </TR>
</TABLE>

<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
</TABLE>


<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>23.1 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Consent of Sheppard Mullin Richter &amp; Hampton LLP (included in Exhibit 5.1) </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>23.2 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Consent of BDO Seidman, LLP, Independent Registered Public Accounting Firm. </P></TD>
  </TR>
</TABLE>
<TABLE style="FONT-SIZE: 10pt; TEXT-ALIGN: left" cellSpacing="0" cellPadding="0" width="100%" border="0">
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top>&nbsp;</TD>
  </TR>
  <TR>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 8%; PADDING-TOP: 0in" vAlign=top width="8%"><P>24.1 </P></TD>
    <TD style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 92%; PADDING-TOP: 0in" vAlign=top width="92%"><P>Power of Attorney. Previously filed. </P></TD>
  </TR>
</TABLE>
<P align=center><FONT face="Times New Roman, Times, serif" size=2>-28-</FONT></P>
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<TYPE>EX-23.2
<SEQUENCE>2
<FILENAME>atco_ex23-2.htm
<DESCRIPTION>CONSENT OF BDO SEIDMAN
<TEXT>
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<P align=right><FONT face="Times New Roman, Times, Serif" size=2>Exhibit&nbsp;23.2 </FONT></P>
<P align=center><FONT face="Times New Roman, Times, Serif" size=2><BR><B>CONSENT
OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</B></FONT></P>
<P><FONT face="Times New Roman, Times, Serif"
size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
hereby consent to the incorporation by reference in this Registration Statement
on Form&nbsp;S-3/A (Amendment No. 3), SEC Registration No. 333-122264, of our
report dated November 10, 2004, except for Note 14 as to which the date is
December 23, 2004, relating to the financial statements and financial statement
schedule, which appears in American Technology Corporation&#146;s Annual Report on
Form&nbsp;10-K for the fiscal year ended September&nbsp;30, 2004, as amended. We
also consent to the references to us under the heading &#147;Experts&#148; in such
Registration Statement. </FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2>/s/ BDO Seidman,
LLP</FONT></P>
<P><FONT face="Times New Roman, Times, Serif" size=2><BR>Costa Mesa,
California<BR>May 25, 2005 </FONT></P>

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