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Discontinued Monoblock Amplifiers

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Hifonics HFi2000D (Factory Refurbished)

2000W RMS, Class D Monoblock HFi Series Amplifier (HFi 2000D)

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2000W RMS, Class D Monoblock HFi Series Amplifier (HFi 2000D)

HFi Series Monoblock Class D Car Amplifier • 1300W x 1-Chan. @ 2 Ohm • 2000W x 1-Chan. @ 1 Ohm • Wired HFR-3 Bass Remote • 4-Way System Protection Circuitry • Preamp RCA Outputs • Blue Illuminated Hifonics Badge

HFi Series Monoblock Class D Car Amplifier • 1300W x 1-Chan. @ 2 Ohm • 2000W x 1-Chan. @ 1 Ohm • Wired HFR-3 Bass Remote • 4-Way System Protection Circuitry • Preamp RCA Outputs • Blue Illuminated Hifonics Badge

Pioneer GM-D7500M Open Box

(Open Box) 800W Max, GM Digital Series Class D Monoblock Amplifier

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(Open Box) 800W Max, GM Digital Series Class D Monoblock Amplifier

GM Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 400W x 1 chan. @ 2 ohm • 800W x 1 chan. Max • Digital Signal Technology • Low-Pass Filter • Speaker Level Inputs • Bass Level Control

GM Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 400W x 1 chan. @ 2 ohm • 800W x 1 chan. Max • Digital Signal Technology • Low-Pass Filter • Speaker Level Inputs • Bass Level Control

Orion Cobalt CO500.1 (CO5001) R/B (Core only)

500W Max, Monoblock Cobalt Series Amplifier

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500W Max, Monoblock Cobalt Series Amplifier

Cobalt Series Monoblock Single-Channel Class A/B Car Amplifier • 175W x 1 Chan. @ 4 Ohm • 250W x 1 Chan. @ 2 Ohm • 500W Max • Speaker-Level Inputs • Selectable Bass Boost • LED Power Indicators

Cobalt Series Monoblock Single-Channel Class A/B Car Amplifier • 175W x 1 Chan. @ 4 Ohm • 250W x 1 Chan. @ 2 Ohm • 500W Max • Speaker-Level Inputs • Selectable Bass Boost • LED Power Indicators

Hifonics ZRX1000.1D (Factory Refurbished)

1000W Max Class D Monoblock Zeus Series Amplifier

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1000W Max Class D Monoblock Zeus Series Amplifier

• 4 ohm: 475 watts x 1 chan.
• 2 ohm: 750 watts x 1 chan.
• 1 ohm: 1000 watts x 1 chan.
• Pulse Width Modulated (PWM) MOSFET Power Supply

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• 4 ohm: 475 watts x 1 chan.
• 2 ohm: 750 watts x 1 chan.
• 1 ohm: 1000 watts x 1 chan.
• Pulse Width Modulated (PWM) MOSFET Power Supply

JBL GTO1201.1II R/B

1200 watts, Grand Touring Series Class D Monoblock Amplifier GTO1201.1 II

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1200 watts, Grand Touring Series Class D Monoblock Amplifier GTO1201.1 II

1200W Grand Touring Series Monoblock Amplifier • 787W x 1 chan. @ 4 Ohm • 1114W x 1 chan. @ 2 Ohm • Class D topology • plexiglass viewing window • high and low-level inputs • CEA-2006 compliant

1200W Grand Touring Series Monoblock Amplifier • 787W x 1 chan. @ 4 Ohm • 1114W x 1 chan. @ 2 Ohm • Class D topology • plexiglass viewing window • high and low-level inputs • CEA-2006 compliant

Kenwood KAC-6104D R/B

(Factory Refurbished) 600W Max, Class D Monoblock Amplifier

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(Factory Refurbished) 600W Max, Class D Monoblock Amplifier

Class D Monoblock Car Amplifier • 200 Watts RMS x1 @ 4 Ohm • 300 Watts RMS x1 @ 2 Ohm• 400 Watts Max • MOSFET Switching Power Supply • Speaker-Level Inputs • Aluminum Heat Sink • CEA-2006 Complaint Amplifier •

Class D Monoblock Car Amplifier • 200 Watts RMS x1 @ 4 Ohm • 300 Watts RMS x1 @ 2 Ohm• 400 Watts Max • MOSFET Switching Power Supply • Speaker-Level Inputs • Aluminum Heat Sink • CEA-2006 Complaint Amplifier •

Hifonics COLOSSUS-PRO 5K (OPEN BOX COMPLETE)

Mount Olympus 2500W RMS Dual Monoblock Class AB Amplifier

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Mount Olympus 2500W RMS Dual Monoblock Class AB Amplifier

• RMS Power: 1200W x 1 @ 4 ohm, 1900W x 1 @ 2 ohm, 2500W x 1 @ 1 ohm
• Total Peak Power: 5000W
• Dimensions: 8.97" W x 38.64" L x 2.76" H

• RMS Power: 1200W x 1 @ 4 ohm, 1900W x 1 @ 2 ohm, 2500W x 1 @ 1 ohm
• Total Peak Power: 5000W
• Dimensions: 8.97" W x 38.64" L x 2.76" H

Kicker ZX1000.1 Factory R/B

06ZX1000.1 ZX Series Class D Monoblock Amplifier

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06ZX1000.1 ZX Series Class D Monoblock Amplifier

Factory Reconditioned with 90 Days Manufacturer's warranty, 1000W RMS Class D Mono Subwoofer Amplifier • 1000 watts RMS power @ 2 ohm • remote level control • protection circuitry • speaker and preamp level inputs

Factory Reconditioned with 90 Days Manufacturer's warranty, 1000W RMS Class D Mono Subwoofer Amplifier • 1000 watts RMS power @ 2 ohm • remote level control • protection circuitry • speaker and preamp level inputs

MTX XTHUNDER1200.1 Open Box Complete

1200W RMS XThunder Series 1 Ohm Stable Mononlock Class D Amplifier

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1200W RMS XThunder Series 1 Ohm Stable Mononlock Class D Amplifier

  • Item Condition: Open Box Complete
  • • RMS Power: 400W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
    • Total Peak Power: 2400W
    • Variable Low Pass Filter
    • Dimensions: 8.9" W x 14.2" L x 2.03" H

  • Item Condition: Open Box Complete
  • • RMS Power: 400W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
    • Total Peak Power: 2400W
    • Variable Low Pass Filter
    • Dimensions: 8.9" W x 14.2" L x 2.03" H

    Kenwood eXcelon XR1000-1

    2000W Max (1000W RMS) Reference Fit Series 2-ohm Stable Monoblock Class-D Amplifier

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    2000W Max (1000W RMS) Reference Fit Series 2-ohm Stable Monoblock Class-D Amplifier

    • 500 Watts RMS x 1 @ 4 ohm
    • 1000 Watts RMS x 1 @ 2 ohm
    • Total Peak Power: 2000 Watts
    • CEA-2006 Compliant/Preamp Outputs/LPF
    • 0 to 18dB Bass Boost
    • Heavy duty aluminum alloy heat-sink
    • 12-5/8" W x 6-5/8" L x 2" H

    • 500 Watts RMS x 1 @ 4 ohm
    • 1000 Watts RMS x 1 @ 2 ohm
    • Total Peak Power: 2000 Watts
    • CEA-2006 Compliant/Preamp Outputs/LPF
    • 0 to 18dB Bass Boost
    • Heavy duty aluminum alloy heat-sink
    • 12-5/8" W x 6-5/8" L x 2" H

    Power Acoustik BAMF-5500/1D (BAMF55001/D)-OPEN BOX

    5500W Max Class D Monoblock BAMF Series Amplifier

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    5500W Max Class D Monoblock BAMF Series Amplifier

    • RMS: 1700W x 1 @ 4 ohm, 2300W x 1 @ 2 ohm, 3200W x 1 chan @ 1 ohm
    • Total Peak Power: 5500W
    • Class D Circuitry
    • Bass Boost: 0-18 dB
    • 1 Pair of Preamp Outputs
    • Dimensions: 16-7/8"L x 8-1/4"W x 2-1/8"H

    • RMS: 1700W x 1 @ 4 ohm, 2300W x 1 @ 2 ohm, 3200W x 1 chan @ 1 ohm
    • Total Peak Power: 5500W
    • Class D Circuitry
    • Bass Boost: 0-18 dB
    • 1 Pair of Preamp Outputs
    • Dimensions: 16-7/8"L x 8-1/4"W x 2-1/8"H

    Power Acoustik GT1-6000D R/B

    6000W Max, Monoblock Gothic Series Car Amplifier

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    6000W Max, Monoblock Gothic Series Car Amplifier

    • RMS: 2300W x 1 @ 4 ohm, 3000W x 1 @ 2 ohm, 3700W x 1 @ 1 ohm
    • Total Peak Power: 6000W
    • Class D Circuitry
    • Bass Boost: 0-12 dB
    • 1 Pair of Preamp Outputs
    • Dimensions: 17-1/2"L x 9-3/4"W x 2-3/10"H

    • RMS: 2300W x 1 @ 4 ohm, 3000W x 1 @ 2 ohm, 3700W x 1 @ 1 ohm
    • Total Peak Power: 6000W
    • Class D Circuitry
    • Bass Boost: 0-12 dB
    • 1 Pair of Preamp Outputs
    • Dimensions: 17-1/2"L x 9-3/4"W x 2-3/10"H

    Rockford Fosgate R250X1 Open Box

    250W RMS Monoblock Single Channel Class AB Prime Series Amplifier

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    250W RMS Monoblock Single Channel Class AB Prime Series Amplifier

    Prime Series Full Range Class AB Monoblock Car Amplifier • 150W x 1 Chan. @ 4 ohm • 250W x 1 Chan. @ 2 ohm • Variable Bass Boost • Variable High-Pass Crossover • CEA-2006 Compliant • Soft Start Turn-On

    Prime Series Full Range Class AB Monoblock Car Amplifier • 150W x 1 Chan. @ 4 ohm • 250W x 1 Chan. @ 2 ohm • Variable Bass Boost • Variable High-Pass Crossover • CEA-2006 Compliant • Soft Start Turn-On

    Hifonics HS25001D (Factory Refurbished)

    5000W Peak (2500W RMS) Samson Series Monoblock 1-Ohm Stable Amplifier

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    5000W Peak (2500W RMS) Samson Series Monoblock 1-Ohm Stable Amplifier

    • 850 Watts RMS x 1 @ 4 ohm
    • 1700 Watts RMS x 1 @ 2 ohm
    • 2500 Watts RMS x 1 @ 1 ohm
    • Total Peak Power: 5000 Watts
    • Variable low-pass filter: 40 - 150 Hz
    • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
    • Fuse Rating: 60 A x 2
    • Dimensions: 9.96"W x 18.90"L x 2.28"H

    • 850 Watts RMS x 1 @ 4 ohm
    • 1700 Watts RMS x 1 @ 2 ohm
    • 2500 Watts RMS x 1 @ 1 ohm
    • Total Peak Power: 5000 Watts
    • Variable low-pass filter: 40 - 150 Hz
    • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
    • Fuse Rating: 60 A x 2
    • Dimensions: 9.96"W x 18.90"L x 2.28"H

    Cadence Q5001D

    500W RMS Q Series 1-ohm Stable Monoblock Class-D Amplifier w/ Bass Knob Included

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    500W RMS Q Series 1-ohm Stable Monoblock Class-D Amplifier w/ Bass Knob Included

    • 200 Watts RMS x 1 @ 4 ohm
    • 300 Watts RMS x 1 @ 2 ohm
    • 500 Watts RMS x 1 @ 1 ohm
    • Low Pass and Subsonic Filters
    •0-12dB Bass Boost
    • Aluminum Heatsink
    • Dimensions: 7.1" W x 13.07" L x 2.05" H

    • 200 Watts RMS x 1 @ 4 ohm
    • 300 Watts RMS x 1 @ 2 ohm
    • 500 Watts RMS x 1 @ 1 ohm
    • Low Pass and Subsonic Filters
    •0-12dB Bass Boost
    • Aluminum Heatsink
    • Dimensions: 7.1" W x 13.07" L x 2.05" H

    SPL FX1-3000D R/B Factory Refurbished

    3000W Max, Class D Monoblock Amplifier

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    3000W Max, Class D Monoblock Amplifier

    FX1 Series 1-Channel Class D Car Amplifier • 900W x 1 chan. @ 4 ohm • 1300W x 1 chan. @ 2 ohm • 170000W x 1 chan. @ 1 ohm • 3000W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

    FX1 Series 1-Channel Class D Car Amplifier • 900W x 1 chan. @ 4 ohm • 1300W x 1 chan. @ 2 ohm • 170000W x 1 chan. @ 1 ohm • 3000W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

    Alpine MRX-M110 OPEN BOX COMPLETE

    1100W RMS Monoblock Class D X-Power Series Car Amplifier

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    1100W RMS Monoblock Class D X-Power Series Car Amplifier

    Opened and Never Installed
    • RMS: 650W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm
    • Total RMS Power: 1100W
    • CEA-2006 Compliant
    • Bass Boost: 0-12 dB at 50 Hz
    • Multi-Stage Power Management Circuit
    • Dimensions: 9"L x 13-3/8"W x 2-1/4"H

    Opened and Never Installed
    • RMS: 650W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm
    • Total RMS Power: 1100W
    • CEA-2006 Compliant
    • Bass Boost: 0-12 dB at 50 Hz
    • Multi-Stage Power Management Circuit
    • Dimensions: 9"L x 13-3/8"W x 2-1/4"H

    Pioneer GM-D8601- OPEN BOX

    800W RMS Class D Monoblock GM Digital Series Amplifier

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    800W RMS Class D Monoblock GM Digital Series Amplifier

    • RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 800W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • CEA-2006 Compliant
    • Variable Bass Boost: 0 to +18 dB
    • Class D Circuitry
    • Dimensions: 10-7/16"W x 2-3/8"D x 7-7/8"H

    • RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 800W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • CEA-2006 Compliant
    • Variable Bass Boost: 0 to +18 dB
    • Class D Circuitry
    • Dimensions: 10-7/16"W x 2-3/8"D x 7-7/8"H

    RE Audio DTS-1500.1 (DTS15001) R/B

    2000W, Monoblock Class D DTS Series Car Amplifier

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    2000W, Monoblock Class D DTS Series Car Amplifier

    DTS Series Monoblock Class D Car Amplifier • 2000W Dynamic • Wired Remote Bass Level Control • Preamp RCA Outputs • Variable Low-Pass Filter • Subsonic Filter • Variable Bass Boost

    DTS Series Monoblock Class D Car Amplifier • 2000W Dynamic • Wired Remote Bass Level Control • Preamp RCA Outputs • Variable Low-Pass Filter • Subsonic Filter • Variable Bass Boost

    Pioneer GM-D8601 (Factory Refurbished)

    800W RMS Class D Monoblock GM Digital Series Amplifier

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    800W RMS Class D Monoblock GM Digital Series Amplifier

    • RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 800W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • CEA-2006 Compliant
    • Variable Bass Boost: 0 to +18 dB
    • Class D Circuitry
    • Dimensions: 10-7/16"W x 2-3/8"D x 7-7/8"H

    • RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm, 800W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • CEA-2006 Compliant
    • Variable Bass Boost: 0 to +18 dB
    • Class D Circuitry
    • Dimensions: 10-7/16"W x 2-3/8"D x 7-7/8"H

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      FAQ Frequently asked questions in Discontinued Monoblock Amplifiers


      A monoblock amplifier is a single-channel amplifier designed to power a single speaker or subwoofer. Unlike multi-channel amplifiers that can power multiple speakers simultaneously, a monoblock amplifier is dedicated to driving a specific speaker, typically a subwoofer. The advantage of a monoblock amplifier lies in its specialized design, which allows it to deliver higher power output to the subwoofer without interference from other speakers. This dedicated power delivery results in enhanced bass response and cleaner, more impactful low-frequency reproduction, making monoblock amplifiers a popular choice for car audio enthusiasts seeking powerful bass performance.
      Monoblock amplifiers are specifically designed to power subwoofers and are not intended for use with other speakers in your audio system. They usually have a single output channel optimized for low-frequency signals, making them unsuitable for driving mid-range or high-frequency speakers. For other speakers like door speakers or tweeters, you should use multi-channel amplifiers or dedicated channels on an audio processor. Using a monoblock amplifier for full-range speakers can result in poor audio performance and potential damage to the speakers.
      Monoblock amplifiers are compatible with most subwoofers, but it's crucial to consider the amplifier's power output and the subwoofer's power handling capabilities. The amplifier's power rating should match or slightly exceed the subwoofer's RMS power handling to ensure optimal performance and prevent overloading the subwoofer. Additionally, check the impedance (ohms) of both the amplifier and the subwoofer to ensure they match. Most monoblock amplifiers can handle both 2-ohm and 4-ohm loads, but some can also operate at 1-ohm, providing flexibility in subwoofer wiring configurations.
      No, monoblock amplifiers are not designed for bridging, as they are already single-channel amplifiers dedicated to powering a single subwoofer. Attempting to bridge a monoblock amplifier can cause damage to the amplifier and subwoofers. If you need to power multiple subwoofers, consider using multi-channel amplifiers or multiple monoblock amplifiers, each dedicated to driving a separate subwoofer. Sonic Electronix offers a wide selection of multi-channel amplifiers that can power multiple subwoofers simultaneously, ensuring optimal performance and protection for your audio system.
      Monoblock amplifiers can generate a significant amount of heat, especially when driving powerful subwoofers at high volume levels. While they don't require special cooling or ventilation compared to other amplifier types, it's essential to provide adequate airflow around the amplifier to dissipate heat effectively. Avoid mounting the amplifier in enclosed spaces or areas with limited ventilation, as this can lead to overheating and reduced performance. In some cases, installing a cooling fan or using amplifier cooling solutions can help maintain optimal operating temperatures. If you have concerns about amplifier heat, Sonic Electronix's knowledgeable staff can recommend suitable cooling solutions for your specific setup. Monoblock amplifiers are an excellent choice for enhancing the bass performance in your car audio system, providing dedicated power delivery to your subwoofers for impactful and detailed low-frequency sound reproduction. When used correctly and matched with the right subwoofers, monoblock amplifiers can elevate your car audio experience to new depths of bass excellence.
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