0000919574-07-003464 SC 13D/A 1 20070720 20070719 AMPEX CORP /DE/ 0000887433 3663 133667696 DE 1231 SC 13D/A 34 005-09690 07989835 1228 DOUGLAS AVENUE 1228 DOUGLAS AVENUE REDWOOD CITY CA 94063-3117 650-367-2011 1228 DOUGLAS AVENUE 1228 DOUGLAS AVENUE REDWOOD CITY CA 94063-3117 AMPEX INC /DE/ 19940505 AMPEX INC 19930328 VALUEVEST HIGH CONCENTRATION MASTER FUND, LTD. 0001380782 204574633 SC 13D/A QUEENSGATE HOUSE 113 SOUTH CHURCH STREET, PO BOX 1234 GEORGE TOWN, GRAND CAYMAN E9 00000 415-677-5851 QUEENSGATE HOUSE 113 SOUTH CHURCH STREET, PO BOX 1234 GEORGE TOWN, GRAND CAYMAN E9 00000 SC 13D/A 1 d794426_13d-a.htm MARK BAKAR SC 13D/A