<?xml version="1.0" encoding="utf-8"?>
<!--Generated by DFIN XBRL Instance Document - http://www.dfinsolutions.com/ - Version R3.0 - on 26-May-2023 [09:51:41] {PM}-->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" roleURI="http://www.xbrl.org/2009/role/negatedLabel" />
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" />
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" />
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" />
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" />
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" />
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" roleURI="http://www.xbrl.org/2009/role/netLabel" />
<labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
<loc xlink:type="locator" xlink:href="hear-20221231.xsd#hear_YearOverYearChangeInFairValueOfEquityAwardsMember" xlink:label="loc_hear_YearOverYearChangeInFairValueOfEquityAwardsMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_hear_YearOverYearChangeInFairValueOfEquityAwardsMember" xml:lang="en-US">Year over Year Change in Fair Value of Equity Awards [Member]</label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_hear_YearOverYearChangeInFairValueOfEquityAwardsMember" xlink:to="lab_hear_YearOverYearChangeInFairValueOfEquityAwardsMember" />
<loc xlink:type="locator" xlink:href="hear-20221231.xsd#hear_FairValueAsOfVestingDateOfEquityAwardsGrantedAndVestedInCoveredFiscalYearMember" xlink:label="loc_hear_FairValueAsOfVestingDateOfEquityAwardsGrantedAndVestedInCoveredFiscalYearMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_hear_FairValueAsOfVestingDateOfEquityAwardsGrantedAndVestedInCoveredFiscalYearMember" xml:lang="en-US">Fair Value as of Vesting Date of Equity Awards Granted and Vested in Covered Fiscal Year [Member]</label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_hear_FairValueAsOfVestingDateOfEquityAwardsGrantedAndVestedInCoveredFiscalYearMember" xlink:to="lab_hear_FairValueAsOfVestingDateOfEquityAwardsGrantedAndVestedInCoveredFiscalYearMember" />
<loc xlink:type="locator" xlink:href="hear-20221231.xsd#hear_YearOverYearChangeInFairValueOfEquityAwardsGrantedInPriorFiscalYearsThatVestedInCoveredFiscalYearMember" xlink:label="loc_hear_YearOverYearChangeInFairValueOfEquityAwardsGrantedInPriorFiscalYearsThatVestedInCoveredFiscalYearMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_hear_YearOverYearChangeInFairValueOfEquityAwardsGrantedInPriorFiscalYearsThatVestedInCoveredFiscalYearMember" xml:lang="en-US">Year over Year Change in Fair Value of Equity Awards Granted in Prior Fiscal Years that Vested in Covered Fiscal Year [Member]</label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_hear_YearOverYearChangeInFairValueOfEquityAwardsGrantedInPriorFiscalYearsThatVestedInCoveredFiscalYearMember" xlink:to="lab_hear_YearOverYearChangeInFairValueOfEquityAwardsGrantedInPriorFiscalYearsThatVestedInCoveredFiscalYearMember" />
<loc xlink:type="locator" xlink:href="hear-20221231.xsd#hear_FairValueAtEndOfPriorFiscalYearOfEquityAwardsGrantedInPriorFiscalYearsThatFailedToMeetVestingConditionsDuringCoveredFiscalYearMember" xlink:label="loc_hear_FairValueAtEndOfPriorFiscalYearOfEquityAwardsGrantedInPriorFiscalYearsThatFailedToMeetVestingConditionsDuringCoveredFiscalYearMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_hear_FairValueAtEndOfPriorFiscalYearOfEquityAwardsGrantedInPriorFiscalYearsThatFailedToMeetVestingConditionsDuringCoveredFiscalYearMember" xml:lang="en-US">Fair Value at End of Prior Fiscal Year of Equity Awards Granted in Prior Fiscal Years that Failed to Meet Vesting Conditions during Covered Fiscal Year [Member]</label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_hear_FairValueAtEndOfPriorFiscalYearOfEquityAwardsGrantedInPriorFiscalYearsThatFailedToMeetVestingConditionsDuringCoveredFiscalYearMember" xlink:to="lab_hear_FairValueAtEndOfPriorFiscalYearOfEquityAwardsGrantedInPriorFiscalYearsThatFailedToMeetVestingConditionsDuringCoveredFiscalYearMember" />
<loc xlink:type="locator" xlink:href="hear-20221231.xsd#hear_EquityAwardAdjustmentsMember" xlink:label="loc_hear_EquityAwardAdjustmentsMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_hear_EquityAwardAdjustmentsMember" xml:lang="en-US">Equity Award Adjustments( [Member]</label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_hear_EquityAwardAdjustmentsMember" xlink:to="lab_hear_EquityAwardAdjustmentsMember" />
<loc xlink:type="locator" xlink:href="hear-20221231.xsd#hear_ReportedGrantDateFairValueOfEquityAwardsInSummaryCompensationMember" xlink:label="loc_hear_ReportedGrantDateFairValueOfEquityAwardsInSummaryCompensationMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_hear_ReportedGrantDateFairValueOfEquityAwardsInSummaryCompensationMember" xml:lang="en-US">Reported Grant Date Fair Value of Equity Awards in Summary Compensation [Member]</label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_hear_ReportedGrantDateFairValueOfEquityAwardsInSummaryCompensationMember" xlink:to="lab_hear_ReportedGrantDateFairValueOfEquityAwardsInSummaryCompensationMember" />
<loc xlink:type="locator" xlink:href="hear-20221231.xsd#hear_YearEndFairValueOfEquityAwardsGrantedInCoveredFiscalYearMember" xlink:label="loc_hear_YearEndFairValueOfEquityAwardsGrantedInCoveredFiscalYearMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_hear_YearEndFairValueOfEquityAwardsGrantedInCoveredFiscalYearMember" xml:lang="en-US">Year End Fair Value of Equity Awards Granted in Covered Fiscal Year [Member]</label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_hear_YearEndFairValueOfEquityAwardsGrantedInCoveredFiscalYearMember" xlink:to="lab_hear_YearEndFairValueOfEquityAwardsGrantedInCoveredFiscalYearMember" />
</labelLink>
</linkbase>
