Skip to main content
eBay Home

Shop by category

Advanced
    • Daily Deals
    • Brand Outlet
    • Help & Contact
    • Sell
    • WatchlistExpand Watch List
      Loading...
      Sign in to see your user information
    • My eBayExpand My eBay
      • Summary
      • Recently Viewed
      • Bids/Offers
      • Watchlist
      • Purchase History
      • Buy Again
      • Selling
      • Saved Searches
      • Saved Sellers
      • My Garage
      • Messages
      • Collection beta
      • The eBay vault
    • Expand Cart
      Loading...
      Something went wrong. View cart for details.
    {"delay":300}

    There seems to be a problem serving the request at this time

    breadcrumb

    • eBay
    • Quantum Audio

    Quantum Audio

    Side Refine Panel

    Shop by Category

    • Quantum Car Audio Amplifiers
    • Quantum Car Subwoofers
    • Quantum Car Speaker
    • All

    • Auction

    • Buy It Now

    • Best Match
    • Time: ending soonest
    • Time: newly listed
    • Price + Shipping: lowest first
    • Price + Shipping: highest first
    • Distance: nearest first
    • Gallery View

    233 Results

    • Quantum Audio QS1500 Amp

      Quantum Audio QS1500 Amp

      $80.00
      $11.43 shipping
      or Best Offer
    • 12 Quantum Audio Subwoofer For Parts Or Repair

      12 Quantum Audio Subwoofer For Parts Or Repair

      $24.99
      0 bids
      $34.15 shipping
      Ending Saturday at 12:32PM PDT1d 4h
    • QUANTUM AUDIO 6.5 PRO COAX SPEAKERS CAR/MOTORCYCLE AUDIO (WEATHER TREATED) PAIR

      QUANTUM AUDIO 6.5 PRO COAX SPEAKERS CAR/MOTORCYCLE AUDIO (WEATHER TREATED) PAIR

      $199.00
      $3.50 shipping
      or Best Offer
      11 watching
    • QUANTUM Audio QWX4000-12D4 12" 4000W DUAL 4Ω COIL SUBWOOFER new free Shipping

      QUANTUM Audio QWX4000-12D4 12" 4000W DUAL 4Ω COIL SUBWOOFER new free Shipping

      $169.00
      Free shipping
      or Best Offer
      38 sold
    • QUANTUM AUDIO CAR USB AUX SD STEREO DIGITAL MEDIA AM/FM RECEIVER PLAYER REMOTE

      QUANTUM AUDIO CAR USB AUX SD STEREO DIGITAL MEDIA AM/FM RECEIVER PLAYER REMOTE

      $12.60
      0 bids
      $15.99 shipping
      Ending Sep 25 at 2:52PM PDT3d 6h
      or Best Offer
    • Quantum Audio Designs Matchmaker MDB-101 Direct Box Gd Cond

      Quantum Audio Designs Matchmaker MDB-101 Direct Box Gd Cond

      $29.99
      0 bids
      $8.55 shipping
      Ending Sep 26 at 4:23PM PDT4d 8h
    • Enhanced Line Mic Cable - Male to Female Neutrik Connector Quantum Audio

      Enhanced Line Mic Cable - Male to Female Neutrik Connector Quantum Audio

      $19.99
      0 bids
      $7.50 shipping
      Ending Today at 12:09PM PDT4h 12m
      or Best Offer
    • Quantum Audio QEA500.4  2400 Watts 4 Channel AB Circuitry Car Stereo Amplifier

      Quantum Audio QEA500.4 2400 Watts 4 Channel AB Circuitry Car Stereo Amplifier

      $109.99
      Free shipping
      Only 3 left
    • Quantum Audio QW3000/12D4 12 inch 1000-3000 Watts 4 Ohm Dvc Subwoofer

      Quantum Audio QW3000/12D4 12 inch 1000-3000 Watts 4 Ohm Dvc Subwoofer

      $179.95
      Free shipping
      Only 1 left!
    • Quantum Audio QPX 3000.1D Monoblock Amplifier a-x

      Quantum Audio QPX 3000.1D Monoblock Amplifier a-x

      $99.99
      $14.99 shipping
    • QUANTUM AUDIO QPX2000.1M 2000W MAX CLASS-D MONOBLOCK CAR SUBWOOFER AMPLIFIER AMP

      New ListingQUANTUM AUDIO QPX2000.1M 2000W MAX CLASS-D MONOBLOCK CAR SUBWOOFER AMPLIFIER AMP

      $59.99
      Free shipping
    • Quantum Audio QEA800.4 3200w 4 channel Car Amplifier Clas A/B Mosfet Amp

      Quantum Audio QEA800.4 3200w 4 channel Car Amplifier Clas A/B Mosfet Amp

      $169.99
      $22.60 shipping
      or Best Offer
    • Quantum Audio 4 Channel Class AB Amp QPX20004

      Quantum Audio 4 Channel Class AB Amp QPX20004

      $80.37
      Was: $184.99
      Free shipping
    • Quantum Audio 4 Channel Class AB Stereo Amp QPX28004

      Quantum Audio 4 Channel Class AB Stereo Amp QPX28004

      $93.03
      Was: $219.99
      Free shipping
    • Quantum Audio QEA1500.1 Mono 1500W 2 Ohm Subwoofer Amplifier - Brand New Amp!

      Quantum Audio QEA1500.1 Mono 1500W 2 Ohm Subwoofer Amplifier - Brand New Amp!

      $89.99
    • Quantum Audio Monoblock Class D Amp QPX40001D

      Quantum Audio Monoblock Class D Amp QPX40001D

      (1)1 product ratings - Quantum Audio Monoblock Class D Amp QPX40001D
      $135.43
      Was: $324.99
      Free shipping
    • Quantum Audio QEA2500.1D 2500W Class-D Monoblock Amplifier

      Quantum Audio QEA2500.1D 2500W Class-D Monoblock Amplifier

      $155.00
      Free shipping
      5 watching
    • Quantum Audio Monoblock Class D Amp QPX50001D

      Quantum Audio Monoblock Class D Amp QPX50001D

      (1)1 product ratings - Quantum Audio Monoblock Class D Amp QPX50001D
      $161.87
      Was: $394.99
      Free shipping
    • Quantum Audio QEA800.4 STRONG 3200 Watts 4 Channel Car Amplifier - New Amp!

      Quantum Audio QEA800.4 STRONG 3200 Watts 4 Channel Car Amplifier - New Amp!

      $139.99
    • QUANTUM AUDIO Q1000.1 AMPLIFIER (UNTESTED), USED

      QUANTUM AUDIO Q1000.1 AMPLIFIER (UNTESTED), USED

      $38.99
      $10.99 shipping
    • Quantum Audio Monoblock Class AB 2000W Amp QPX20001M

      Quantum Audio Monoblock Class AB 2000W Amp QPX20001M

      $80.37
      Was: $184.99
      Free shipping
    • Quantum Audio QEA800.2 STRONG 1800 Watts 2 Channel Car Amplifier - New Amp!

      Quantum Audio QEA800.2 STRONG 1800 Watts 2 Channel Car Amplifier - New Amp!

      $89.99

    Results Pagination - Page 1

    1. 1
    2. 2
    3. 3
    4. 4
    5. 5
    6. 6
    7. 7
    8. 8
    9. 9
    10. 10

    Additional site navigation

    • About eBay
    • Announcements
    • Community
    • Security Center
    • Seller Center
    • Policies
    • Affiliates
    • Help & Contact
    • Site Map
    Copyright © 1995-2023 eBay Inc. All Rights Reserved. Accessibility, User Agreement, Privacy, Payments Terms of Use, Cookies, Your Privacy Choices and AdChoice