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Discontinued Monoblock Amplifiers

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Hifonics HFi1000.1D Open Box Complete (Good, Used)

1000 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier Open Box Complete (Good, Used)

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1000 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier Open Box Complete (Good, Used)

• 4 ohm: 475 watts x 1 chan.
• 2 ohm: 750 watts x 1 chan.
• 1 ohm: 1000 watts x 1 chan.
• Wired HFR-3 remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Frequency Response: 15 - 250 Hz
• Signal to Noise Ration: >95 dB
• Variable low-pass filter: 30 - 250 Hz, 24 dB/octave

• 4 ohm: 475 watts x 1 chan.
• 2 ohm: 750 watts x 1 chan.
• 1 ohm: 1000 watts x 1 chan.
• Wired HFR-3 remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Frequency Response: 15 - 250 Hz
• Signal to Noise Ration: >95 dB
• Variable low-pass filter: 30 - 250 Hz, 24 dB/octave

Hifonics GLX1400.1D (Factory Refurbished)

1400W RMS Class D Monoblock Gladiator Series Amplifier

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1400W RMS Class D Monoblock Gladiator Series Amplifier

Gladiator Series Monoblock Class D Car Amplifier • 4 ohm: 500 watts x 1 chan. • 2 ohm: 1000 watts x 1 chan. • 1 ohm: 1400 watts x 1 chan.

Gladiator Series Monoblock Class D Car Amplifier • 4 ohm: 500 watts x 1 chan. • 2 ohm: 1000 watts x 1 chan. • 1 ohm: 1400 watts x 1 chan.

Audiobahn A1300HCT R/B

2400W Max, High Current MonoBlock Amplifier (Factory Refurbished)

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2400W Max, High Current MonoBlock Amplifier (Factory Refurbished)

2400W Max, High Current Series Monoblock Amplifier • 1200W RMS @ 1 ohm • 600W RMS @ 2 ohm • 300W RMS @ 4 ohm • Blue Illuminated VU Meter • Beautiful Chrome Design Heatsink • S/N Ratio: 100dB • Bass Boost: 0-18dB

2400W Max, High Current Series Monoblock Amplifier • 1200W RMS @ 1 ohm • 600W RMS @ 2 ohm • 300W RMS @ 4 ohm • Blue Illuminated VU Meter • Beautiful Chrome Design Heatsink • S/N Ratio: 100dB • Bass Boost: 0-18dB

Hifonics TXi 1508D R/B

1500W RMS Class D Monoblock Titan TXi Series Amplifier (TXi1508D)

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1500W RMS Class D Monoblock Titan TXi Series Amplifier (TXi1508D)

Titan Series 1-Channel Class D Car Amplifier • 450W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • PWM MOSFET power supply • Wired remote bass level control included • Mono channel operation • Preamp RCA outputs

Titan Series 1-Channel Class D Car Amplifier • 450W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • PWM MOSFET power supply • Wired remote bass level control included • Mono channel operation • Preamp RCA outputs

Cerwin-Vega VEGA500.1

500W RMS Vega Series Monoblock Class D Car Amplifier

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500W RMS Vega Series Monoblock Class D Car Amplifier

• • • • • Description Coming Soon! • • • • •

• • • • • Description Coming Soon! • • • • •

Kenwood KAC-5001PS OPEN BOX COMPLETE

500W RMS Class D 1-Channel Monoblock Performance Series Car Power Amplifier

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500W RMS Class D 1-Channel Monoblock Performance Series Car Power Amplifier

  • Item Condition: Open Box Complete
  • • RMS: 300 x 1 @ 4 ohm, 500W x 1 @ 2 ohm
    • Total RMS Power: 500W
    • CEA-2006 Compliant
    • Bass Boost: 0 - 18 dB at 40 Hz
    • Class D Circuitry
    • Dimensions: 9-7/16"W x 7-9/16"L x 2-3/16"H

  • Item Condition: Open Box Complete
  • • RMS: 300 x 1 @ 4 ohm, 500W x 1 @ 2 ohm
    • Total RMS Power: 500W
    • CEA-2006 Compliant
    • Bass Boost: 0 - 18 dB at 40 Hz
    • Class D Circuitry
    • Dimensions: 9-7/16"W x 7-9/16"L x 2-3/16"H

    Hifonics BRX1516.1D (OPEN BOX COMPLETE)

    1500W Monoblock Brutus Series Super Class D Amplifier

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    1500W Monoblock Brutus Series Super Class D Amplifier

    • RMS Power: 550W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • Variable Low Pass Filter
    • Dimensions: 9.8" W x 12.5" L x 2.4" H

    • RMS Power: 550W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • Variable Low Pass Filter
    • Dimensions: 9.8" W x 12.5" L x 2.4" H

    Power Acoustik SL-5500D ( SL5500D )

    5500W Max, Class D Monoblock Amplifier

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    5500W Max, Class D Monoblock Amplifier

    5500W Class D Monoblock Amplifier • 2100 watts @ 4 Ohm • • 3300W @ 2 Ohm • PWM power supply • four way protection circuit • system distress indicator • heavy duty power and speaker terminals

    5500W Class D Monoblock Amplifier • 2100 watts @ 4 Ohm • • 3300W @ 2 Ohm • PWM power supply • four way protection circuit • system distress indicator • heavy duty power and speaker terminals

    Cerwin-Vega Stroker 2000.1 (STKR2000.1)

    2000W RMS Stroker Series Monoblock Class GH Car Amplifier (STKR20001, S2000.1, S20001)

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    2000W RMS Stroker Series Monoblock Class GH Car Amplifier (STKR20001, S2000.1, S20001)

    Stroker Series Monoblock Class GH Car Amplifier • 4 ohm: 1000 watts x 1 chan. • 2 ohm: 1500 watts x 1 chan. • 1 ohm: 2000 watts x 1 chan. • Clip indication LED's for simple amplifier system set-up

    Stroker Series Monoblock Class GH Car Amplifier • 4 ohm: 1000 watts x 1 chan. • 2 ohm: 1500 watts x 1 chan. • 1 ohm: 2000 watts x 1 chan. • Clip indication LED's for simple amplifier system set-up

    VIBE Audio Black Box Bass 1 V1 (BlackBB1-V1) R/B

    1250W RMS Black Box Series Monoblock Amplifier

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    1250W RMS Black Box Series Monoblock Amplifier

    Black Box Series 1-Channel Class A/B Car Amplifier • 1000W x 1 Chan @ 2 Ohm • 650W x 1 Chan @ 4 Ohm • Variable Bass Boost • LED Indicators • Preamp RCA Outputs • Variable Low-Pass Filter and Subsonic Filter

    Black Box Series 1-Channel Class A/B Car Amplifier • 1000W x 1 Chan @ 2 Ohm • 650W x 1 Chan @ 4 Ohm • Variable Bass Boost • LED Indicators • Preamp RCA Outputs • Variable Low-Pass Filter and Subsonic Filter

    Hifonics Brutus BRZ1200.1D Open Box

    (Open Box) 1200W RMS, Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 1200.1D)

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    (Open Box) 1200W RMS, Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 1200.1D)

    Brutus Series Monoblock Class D Car Amplifier • 1200W x 1-Chan. @ 1 Ohm • 900W x 1-Chan. @ 2 Ohm • 450W x 1-Chan. @ 4 Ohm • Wired HFR-3 Remote • 4-Way System Protection • Phase Shift • Silver-Plated RCA Inputs

    Brutus Series Monoblock Class D Car Amplifier • 1200W x 1-Chan. @ 1 Ohm • 900W x 1-Chan. @ 2 Ohm • 450W x 1-Chan. @ 4 Ohm • Wired HFR-3 Remote • 4-Way System Protection • Phase Shift • Silver-Plated RCA Inputs

    DEI - Directed Audio D2400 R/B

    2400W Max, Class D Monoblock Amplifier

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    2400W Max, Class D Monoblock Amplifier

    Class-D Monoblock Amplifier • 12400W Max • 1200W RMS x 1 @ 1 • Remote Level Control Included • Variable Crossover • 8dB Bass Boost • Adjustable Input Sensitivity

    Class-D Monoblock Amplifier • 12400W Max • 1200W RMS x 1 @ 1 • Remote Level Control Included • Variable Crossover • 8dB Bass Boost • Adjustable Input Sensitivity

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    Class-D Digital Amplifier • 300W RMS x 1 @ 2 • Bass Remote Included • 0-18dB Bass Boost • 3-Way Protection • Subsonic/Low-Pass Filters • Phase Shift Control • Adjustable Input Sensitivity

    Class-D Digital Amplifier • 300W RMS x 1 @ 2 • Bass Remote Included • 0-18dB Bass Boost • 3-Way Protection • Subsonic/Low-Pass Filters • Phase Shift Control • Adjustable Input Sensitivity

    Rockford Fosgate T1000-1bdCP +Alpine R-W12D2+Free MDFS12 Enclosure+Free Bak42bk

    1000W Rockford Fosgate Monoblock Amp + Alpine 12" R-W12D2 Subwoofer + Belva Sealed Enclosure + Belva Amp Kit (black)

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    1000W Rockford Fosgate Monoblock Amp + Alpine 12" R-W12D2 Subwoofer + Belva Sealed Enclosure + Belva Amp Kit (black)

    • RMS: 700W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Total RMS Power: 1000W
    • CEA-2006 Compliant
    • Variable Bass Boost: 0 to +18 dB at 45 Hz
    • Ultra Efficient Class bD Circuitry
    • Dimensions: 13-11/16"L x 8-3/16"W x 2-3/16"H

    • RMS: 700W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
    • Total RMS Power: 1000W
    • CEA-2006 Compliant
    • Variable Bass Boost: 0 to +18 dB at 45 Hz
    • Ultra Efficient Class bD Circuitry
    • Dimensions: 13-11/16"L x 8-3/16"W x 2-3/16"H

    Image Dynamics SQ600.1D

    600W RMS SQ Series Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob Included

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    600W RMS SQ Series Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob Included

    • 250 Watts RMS x 1 @ 4 ohm
    • 400 Watts RMS x 1 @ 2 ohm
    • 600 Watts RMS x 1 @ 1 ohm
    • Total Peak Power: 1200 Watts
    • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
    • Heavy duty aluminum alloy heat-sink for extreme heat dissipation
    • Dimensions: 8-1/2"W x 17-3/4"L x 2-1/4"H

    • 250 Watts RMS x 1 @ 4 ohm
    • 400 Watts RMS x 1 @ 2 ohm
    • 600 Watts RMS x 1 @ 1 ohm
    • Total Peak Power: 1200 Watts
    • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
    • Heavy duty aluminum alloy heat-sink for extreme heat dissipation
    • Dimensions: 8-1/2"W x 17-3/4"L x 2-1/4"H

    Rockford Fosgate PRIME R500-1 Open Box

    (Open Box) 500W Max, PRIME Series Monoblock Amplifier

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    (Open Box) 500W Max, PRIME Series Monoblock Amplifier

    PRIME Series Single-Channel Monoblock Class A/B Car Amplifier • 320W x 1 Chan. @ 4 Ohm • 500W x 1 Chan. @ 2 Ohm • 500 Watts Max • Tuned Bass EQ • Variable Low-Pass Filter • Extruded Aluminum Heatsink

    PRIME Series Single-Channel Monoblock Class A/B Car Amplifier • 320W x 1 Chan. @ 4 Ohm • 500W x 1 Chan. @ 2 Ohm • 500 Watts Max • Tuned Bass EQ • Variable Low-Pass Filter • Extruded Aluminum Heatsink

    Hifonics X1900.1D-RB (Factory Refurbished)

    1900W BRUTUS X-14 Series Class D Monoblock 1-Channel Amplifier

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    1900W BRUTUS X-14 Series Class D Monoblock 1-Channel Amplifier

    • RMS Power: 800W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 1900W x 1 @ 1 ohm
    • Total Peak Power: 1900W
    • CEA-2006 Compliant
    • 13.39"W x 2.5"H x 9.49"L

    • RMS Power: 800W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 1900W x 1 @ 1 ohm
    • Total Peak Power: 1900W
    • CEA-2006 Compliant
    • 13.39"W x 2.5"H x 9.49"L

    Orion Cobalt CO8001 (CO800.1) Open Box

    (Open Box) 800W Max, Monoblock Car Amplifier

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    (Open Box) 800W Max, Monoblock Car Amplifier

    Cobalt Series Monoblock Single-Channel Class A/B Car Amplifier • 300W x 1 Chan. @ 4 Ohm • 400W x 1 Chan. @ 2 Ohm • 800W Max • Speaker-Level Inputs • Selectable Bass Boost • LED Power Indicators

    Cobalt Series Monoblock Single-Channel Class A/B Car Amplifier • 300W x 1 Chan. @ 4 Ohm • 400W x 1 Chan. @ 2 Ohm • 800W Max • Speaker-Level Inputs • Selectable Bass Boost • LED Power Indicators

    Crunch DRA3250.1D (Factory Refurbished)

    3200W Max V-Drive Series Class D Single Channel Monoblock Car Audio Amplifier

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    3200W Max V-Drive Series Class D Single Channel Monoblock Car Audio Amplifier

    • Peak: 800W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 3200W x 1 @ 1 ohm
    • Total Peak Power: 3200W
    • Class D Circuitry
    • Bass Boost: 0-10 dB
    • Wired Bass Remote Included
    • Dimensions: 14-9/16"L x 9-1/2"W x 2-1/8"H

    • Peak: 800W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 3200W x 1 @ 1 ohm
    • Total Peak Power: 3200W
    • Class D Circuitry
    • Bass Boost: 0-10 dB
    • Wired Bass Remote Included
    • Dimensions: 14-9/16"L x 9-1/2"W x 2-1/8"H

    Alpine MRP-M500 Open Box

    (Open Box) 500W RMS, Class D Monoblock Amplifier

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    (Open Box) 500W RMS, Class D Monoblock Amplifier

    V Power Series Class D Monoblock Car Amplifier • 300W x 1 chan. @ 4 ohm • 500W x 1 chan. @ 2 ohm • 1000W x 1 chan. Max approx. • MOSFET Power supply • Bass EQ 0-12dB at 50Hz • Continuously adjustable gain control • Thermal management control

    V Power Series Class D Monoblock Car Amplifier • 300W x 1 chan. @ 4 ohm • 500W x 1 chan. @ 2 ohm • 1000W x 1 chan. Max approx. • MOSFET Power supply • Bass EQ 0-12dB at 50Hz • Continuously adjustable gain control • Thermal management control

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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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