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    • eBay
    • Quantum Audio

    Quantum Audio

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

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    • Time: ending soonest
    • Time: newly listed
    • Price + Shipping: lowest first
    • Price + Shipping: highest first
    • Distance: nearest first
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    178 Results

    • Quantum Audio QW3000/8D4 8in Subwoofer 3000watts Max/ 1000watts RMS Dual 4 ohm

      Quantum Audio QW3000/8D4 8in Subwoofer 3000watts Max/ 1000watts RMS Dual 4 ohm

      $185.00
      or Best Offer
      14 watching
    • Old-school Quantum audio amplifier QSA 1500D

      Old-school Quantum audio amplifier QSA 1500D

      $88.00
      0 bids
      $22.00 shipping
      Ending Thursday at 9:12AM PDT2d 11h
      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

      $99.00
      Only 3 left
    • Quantum Audio Car Radio

      Quantum Audio Car Radio

      $49.99
      $8.14 shipping
    • QUANTUM AUDIO 600 WATT 4 CH CHANNEL CAR STEREO AMPLIFIER SPEAKER/SUB AMP ORANGE

      QUANTUM AUDIO 600 WATT 4 CH CHANNEL CAR STEREO AMPLIFIER SPEAKER/SUB AMP ORANGE

      $54.90
    • Quantum Audio QEA 1500.1 Watt Monoblock Amplifier QEA Series 1500 Watts

      Quantum Audio QEA 1500.1 Watt Monoblock Amplifier QEA Series 1500 Watts

      $60.00
      $15.00 shipping
      or Best Offer
      Only 1 left!
    • QUANTUM Audio QWX4000-12D4 12" 4000 Watts Dual 4Ω Coil Subwoofer

      QUANTUM Audio QWX4000-12D4 12" 4000 Watts Dual 4Ω Coil Subwoofer

      $168.99
      23 watching
    • Quantum Audio QS6.5

      Quantum Audio QS6.5

      $50.00
      0 bids
      $5.25 shipping
      Ending Tuesday at 11:50AM PDT14h 3m
      or Best Offer
    • Quantum Audio QA3X 3-Way Electronic Car Crossover Xover 2/4/6 Channel Input LED

      Quantum Audio QA3X 3-Way Electronic Car Crossover Xover 2/4/6 Channel Input LED

      $49.90
      Was: $74.85
    • Quantum Audio QPX2000.1M 2000W Monoblock Car Amplifier (please read)

      Quantum Audio QPX2000.1M 2000W Monoblock Car Amplifier (please read)

      $50.00
      0 bids
      $19.99 shipping
      Ending Aug 15 at 6:33AM PDT6d 8h
      or Best Offer
    • car speakers 12 subwoofer and amp kit

      car speakers 12 subwoofer and amp kit

      $350.00
      0 bids
      $51.31 shipping
      Ending Aug 14 at 10:27PM PDT6d
      or Best Offer
    • QUANTUM AUDIO QWX4000-12D4 12" 4000 Watts Dual 4Ω Coil Subwoofer

      QUANTUM AUDIO QWX4000-12D4 12" 4000 Watts Dual 4Ω Coil Subwoofer

      $168.00
      or Best Offer
      8 watching
    • Quantum Audio 6500 Watt Class-D Monoblock Amplifier Car Subwoofer Amp 1 Channel

      Quantum Audio 6500 Watt Class-D Monoblock Amplifier Car Subwoofer Amp 1 Channel

      $399.00
      $25.00 shipping
      or Best Offer
    • Quantum Audio QEA2500.1D 2500W Class-D Monoblock Amplifier

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

      $155.00
    • Quantum Audio QPX5000.1D 5000 Watts 1-Ohm Stable Class-D Monoblock Car Amplifier

      Quantum Audio QPX5000.1D 5000 Watts 1-Ohm Stable Class-D Monoblock Car Amplifier

      5 out of 5 stars (1)1 product ratings - Quantum Audio QPX5000.1D 5000 Watts 1-Ohm Stable Class-D Monoblock Car Amplifier
      $249.99
      9 watching
    • QUANTUM AUDIO QPX2000.4 2200W MAX CLASS-A/B 4-CHANNEL CAR STEREO AMPLIFIER AMP

      QUANTUM AUDIO QPX2000.4 2200W MAX CLASS-A/B 4-CHANNEL CAR STEREO AMPLIFIER AMP

      $79.99
      Free shipping
    • QUANTUM AUDIO QPX4000.1D 4000W MAX CLASS-D MONO BLOCK CAR SUB WOOFER AMPLIFIER

      QUANTUM AUDIO QPX4000.1D 4000W MAX CLASS-D MONO BLOCK CAR SUB WOOFER AMPLIFIER

      5 out of 5 stars (1)1 product ratings - QUANTUM AUDIO QPX4000.1D 4000W MAX CLASS-D MONO BLOCK CAR SUB WOOFER AMPLIFIER
      $249.99
      or Best Offer
      7 watching
    • QUANTUM AUDIO QPX2000.4 2200W MAX CLASS-A/B 4-CHANNEL CAR STEREO AMPLIFIER AMP

      QUANTUM AUDIO QPX2000.4 2200W MAX CLASS-A/B 4-CHANNEL CAR STEREO AMPLIFIER AMP

      $139.99
      or Best Offer
    • Quantum Audio QPX2000.1M 2000W Monoblock Car Amplifier

      Quantum Audio QPX2000.1M 2000W Monoblock Car Amplifier

      $109.95
      $12.95 shipping
    • QUANTUM AUDIO QEA800.2 1800W MAX CLASS-A/B 2-CHANNEL CAR STEREO AMPLIFIER AMP

      QUANTUM AUDIO QEA800.2 1800W MAX CLASS-A/B 2-CHANNEL CAR STEREO AMPLIFIER AMP

      $119.99
      or Best Offer
      Only 1 left!
    • Quantum Audio Amplifier Tested & Working .

      Quantum Audio Amplifier Tested & Working .

      $200.00
      or Best Offer
    • Quantum audio 1800w qpx1200.2 class a/b amplifier 2 channels

      Quantum audio 1800w qpx1200.2 class a/b amplifier 2 channels

      $99.95
      $20.00 shipping
      or Best Offer
    • Quantum Audio Q6004 600 Watt Amplifier 4 Channel

      Quantum Audio Q6004 600 Watt Amplifier 4 Channel

      $60.00
      $15.00 shipping
      or Best Offer

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