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  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Amplifiers
  4. Discontinued Monoblock Amplifiers

Discontinued Monoblock Amplifiers

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Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Key Features
Amplifiers can offer a diverse array of features. If you select more than one feature, then you will view amplifiers that have ALL features selected. These include speaker-level inputs that facilitate seamless integration with factory audio systems, Bluetooth connectivity suitable for ATV/UTV or Classic vehicle setups, built-in DSPs that provide enhanced control over your audio signal, and a host of other functionalities to explore.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
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Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
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Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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You are currently viewing discontinued products.

MB Quart RA2000.1 (Factory Refurbished)

2000W Class D 1-Channel Monoblock Reference Series Amplifier

RA2000.1 big DISCONTINUED
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MB Quart RA2000.1 (Factory Refurbished)

2000W Class D 1-Channel Monoblock Reference Series Amplifier

• Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Built-In System Diagnostics
• Variable Bass EQ: 0 to +10 dB at 45 Hz
• Class D Circuitry
• Dimensions: 8-5/16"W x 20-1/2"D x 2-3/8"H

• Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Built-In System Diagnostics
• Variable Bass EQ: 0 to +10 dB at 45 Hz
• Class D Circuitry
• Dimensions: 8-5/16"W x 20-1/2"D x 2-3/8"H

Hifonics ZRX3200.1D (Factory Refurbished)

3200W Max Class D Monoblock Zeus Series Amplifier

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Hifonics ZRX3200.1D (Factory Refurbished)

3200W Max Class D Monoblock Zeus Series Amplifier

• Peak: 800W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 3200W x 1 @ 1 ohm
• Total Peak Power: 3200W
• Class D Circuitry
• Variable Bass Boost: 0 to +10 dB at 50 Hz
• Wired Bass Remote Included
• Dimensions: 19-15/16"L x 10"W x 2-7/16"H

• Peak: 800W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 3200W x 1 @ 1 ohm
• Total Peak Power: 3200W
• Class D Circuitry
• Variable Bass Boost: 0 to +10 dB at 50 Hz
• Wired Bass Remote Included
• Dimensions: 19-15/16"L x 10"W x 2-7/16"H

Hifonics XX-THOR

3000 watts, Class D MonoBlock Amplifier

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Hifonics XX-THOR

3000 watts, Class D MonoBlock Amplifier

3000 watts, Class D MonoBlock Amplifier • 3000 watts x 1 channels @ 1 ohm • 2300 watts x 1 channels @ 2 ohm • 1200 watts x 1 channels @ 4 ohm • Complementary/Balanced high-speed MOSFET output devices • Full-range RCA line-level outputs

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3000 watts, Class D MonoBlock Amplifier • 3000 watts x 1 channels @ 1 ohm • 2300 watts x 1 channels @ 2 ohm • 1200 watts x 1 channels @ 4 ohm • Complementary/Balanced high-speed MOSFET output devices • Full-range RCA line-level outputs

Kicker ZX400.1 (10ZX400.1) Open Box

(Open Box) 400W RMS, Class D Monoblock ZX Series Amplifier (ZX4001)

10ZX400.1 big DISCONTINUED
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Kicker ZX400.1 (10ZX400.1) Open Box

(Open Box) 400W RMS, Class D Monoblock ZX Series Amplifier (ZX4001)

ZX Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 400W x 1 chan. @ 2 ohm • Balanced Differential Inputs • Muting Circuit • Top Mounted Controls • Optional Vinyl Skins For Personalization

ZX Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 400W x 1 chan. @ 2 ohm • Balanced Differential Inputs • Muting Circuit • Top Mounted Controls • Optional Vinyl Skins For Personalization

SPL FX1-5500D R/B

Class D Monoblock Amplifier

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SPL FX1-5500D R/B

Class D Monoblock Amplifier

FX1 Series 1-Channel Class D Car Amplifier • 1700W x 1 chan. @ 4 ohm • 2500W x 1 chan. @ 2 ohm • 3200W x 1 chan. @ 1 ohm • 5500W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

FX1 Series 1-Channel Class D Car Amplifier • 1700W x 1 chan. @ 4 ohm • 2500W x 1 chan. @ 2 ohm • 3200W x 1 chan. @ 1 ohm • 5500W x 1 chan. Max • Nickel Plated Heavy Duty Power & Speaker Terminals

Massive Audio D 3600 Open Box (Complete)

3600W Max 1 Channel Monoblock D Block Series Car Amplifier

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Massive Audio D 3600 Open Box (Complete)

3600W Max 1 Channel Monoblock D Block Series Car Amplifier

• RMS: 650W x 1 @ 4 ohm, 950W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
• Total Peak Power: 3600W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB
• Linkable with RCA
• Dimensions: 14-13/16"L x 6-1/2"W x 2-1/8"H

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• RMS: 650W x 1 @ 4 ohm, 950W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
• Total Peak Power: 3600W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB
• Linkable with RCA
• Dimensions: 14-13/16"L x 6-1/2"W x 2-1/8"H

Boston Acoustics GTA-1000m Open Box

Open Box 1000W Monoblock Class D GTA Series Amplifier

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Boston Acoustics GTA-1000m Open Box

Open Box 1000W Monoblock Class D GTA Series Amplifier

GTA Series Class D Monoblock Amplifier • 600W x 1 Chan. @ 4 Ohm • 1000W x 1 Chan. @ 2 Ohm • Symmetrical Signal Topology • Q-Tune Circuitry • Integral Mounting System • Wrap-Around Heatsink Design

GTA Series Class D Monoblock Amplifier • 600W x 1 Chan. @ 4 Ohm • 1000W x 1 Chan. @ 2 Ohm • Symmetrical Signal Topology • Q-Tune Circuitry • Integral Mounting System • Wrap-Around Heatsink Design

NVX JAD1200.1

True 2400 Watt Peak 1200W RMS Class D Monoblock Amplifier with Bass Remote Included

JAD1200.1 big DISCONTINUED
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NVX JAD1200.1

True 2400 Watt Peak 1200W RMS Class D Monoblock Amplifier with Bass Remote Included

• RMS: 500W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Wired Bass Remote Included
• Ultra Efficient Class D Design
• Dimensions: 6-7/10"W x 12-8/10"L x 1-8/10"H

108

• RMS: 500W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Wired Bass Remote Included
• Ultra Efficient Class D Design
• Dimensions: 6-7/10"W x 12-8/10"L x 1-8/10"H

Orion HCCA-D1200 Open Box

(Open Box)1200W Max, HCCA High Current Competition Class D Monoblock Amplifier

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Orion HCCA-D1200 Open Box

(Open Box)1200W Max, HCCA High Current Competition Class D Monoblock Amplifier

1200W Class D Monoblock Amplifier • 250W x 1 chan. @ 4 Ohm • 400W x 1 chan. @ 2 Ohm • Orion industrial design • MOSFET power supply • double sided circuit boards • CEA-2006 compliant

1200W Class D Monoblock Amplifier • 250W x 1 chan. @ 4 Ohm • 400W x 1 chan. @ 2 Ohm • Orion industrial design • MOSFET power supply • double sided circuit boards • CEA-2006 compliant

Rockford Fosgate Prime R500X1D

500W RMS Class-D Prime Series Monoblock Car Amplifier with Bass Remote

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Rockford Fosgate Prime R500X1D

500W RMS Class-D Prime Series Monoblock Car Amplifier with Bass Remote

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier

173

• 300 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier

JBL MS-A5001 (Open Box)

500W True RMS, 1-Channel Monoblock Amplifier with Digital Input Mixer and Graphical Status Display

MS-A5001 big DISCONTINUED
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JBL MS-A5001 (Open Box)

500W True RMS, 1-Channel Monoblock Amplifier with Digital Input Mixer and Graphical Status Display

• RMS: 500 x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• DSP (Digital Signal Processing)
• Sophisticated Crossover Functions and Selectable Crossover Slopes
• Dimensions: 8-13/16"L x 7-1/4"W x 2-13/16"H

• RMS: 500 x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• DSP (Digital Signal Processing)
• Sophisticated Crossover Functions and Selectable Crossover Slopes
• Dimensions: 8-13/16"L x 7-1/4"W x 2-13/16"H

Power Acoustik CPT1-2200D-OPEN BOX

2200W Max, CRYPT Series Class D Monoblock Amplifier

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Power Acoustik CPT1-2200D-OPEN BOX

2200W Max, CRYPT Series Class D Monoblock Amplifier

• RMS: 700W x 1 @ 4 ohm, 950W x 1 @ 2 ohm, 1300W x 1 chan @ 1 ohm
• Total Peak Power: 2200W
• Class D Circuitry
• Bass Boost: 0-12 dB at 45 Hz
• 1 Pair of Preamp Outputs
• Dimensions: 12"L x 9-13/16"W x 2-5/16"H

• RMS: 700W x 1 @ 4 ohm, 950W x 1 @ 2 ohm, 1300W x 1 chan @ 1 ohm
• Total Peak Power: 2200W
• Class D Circuitry
• Bass Boost: 0-12 dB at 45 Hz
• 1 Pair of Preamp Outputs
• Dimensions: 12"L x 9-13/16"W x 2-5/16"H

Absolute EVD-4500

4500W Max, Evolution Series Class D Monoblock Amplifier (EVD4500)

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Absolute EVD-4500

4500W Max, Evolution Series Class D Monoblock Amplifier (EVD4500)

Evolution Series Class D Monoblock Car Amplifier • 1160W x 1 chan. @ 4 ohm • 1600W x 1 chan. @ 2 ohm • 1800W x 1 chan. @ 1 ohm • MOSFET power supply • Low level RCA input • Soft delayed power on

Evolution Series Class D Monoblock Car Amplifier • 1160W x 1 chan. @ 4 ohm • 1600W x 1 chan. @ 2 ohm • 1800W x 1 chan. @ 1 ohm • MOSFET power supply • Low level RCA input • Soft delayed power on

Kole Audio KX1-3000D R/B

3000W Max, KX Series Class D Monoblock Amplifier

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Kole Audio KX1-3000D R/B

3000W Max, KX Series Class D Monoblock Amplifier

KX Series Class D Monoblock Car Amplifier • 900W x 1 chan. @ 4 ohm • 1300W x 1 chan. @ 2 ohm • 1700W x 1 chan. @ 1 ohm • Fully regulated PWM MOSFET power supply • Preamp RCA outputs • Nickel-plated screw terminals

KX Series Class D Monoblock Car Amplifier • 900W x 1 chan. @ 4 ohm • 1300W x 1 chan. @ 2 ohm • 1700W x 1 chan. @ 1 ohm • Fully regulated PWM MOSFET power supply • Preamp RCA outputs • Nickel-plated screw terminals

Hifonics Brutus BRZ2100.1D (Factory Refurbished)

2100W RMS Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 2100.1D)

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Hifonics Brutus BRZ2100.1D (Factory Refurbished)

2100W RMS Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 2100.1D)

Brutus Series Monoblock Class D Car Amplifier • 2100W x 1-Chan. @ 1 Ohm • 1400W x 1-Chan. @ 2 Ohm • 700W 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 • 2100W x 1-Chan. @ 1 Ohm • 1400W x 1-Chan. @ 2 Ohm • 700W x 1-Chan. @ 4 Ohm • Wired HFR-3 Remote • 4-Way System Protection • Phase Shift • Silver-Plated RCA Inputs

Audiopipe APMI-2000 OPEN BOX COMPLETE

2000W Monoblock APMI Series Class D Amplifier

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Audiopipe APMI-2000 OPEN BOX COMPLETE

2000W Monoblock APMI Series Class D Amplifier

Item is used and has been previously installed
• RMS Power: 770W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 1944W x 1 @ 1 ohm
• Total Peak Power: 2000W
• Variable Low Pass Filter
• Dimensions: 6.49" W x 16.39" L x 2.20" H

Item is used and has been previously installed
• RMS Power: 770W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 1944W x 1 @ 1 ohm
• Total Peak Power: 2000W
• Variable Low Pass Filter
• Dimensions: 6.49" W x 16.39" L x 2.20" H

Hifonics ZRX1200.1D (Factory Refurbished)

1200W Max Class D Monoblock Zeus Series Amplifier

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Hifonics ZRX1200.1D (Factory Refurbished)

1200W Max Class D Monoblock Zeus Series Amplifier

• Peak: 400W x 1 @ 4 ohm, 600W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 1200W
• Class D Circuitry
• Variable Bass Boost: 0 to +10 dB at 45 Hz
• Wired Bass Remote Included
• Dimensions: 12"L x 10"W x 2-7/16"H

• Peak: 400W x 1 @ 4 ohm, 600W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 1200W
• Class D Circuitry
• Variable Bass Boost: 0 to +10 dB at 45 Hz
• Wired Bass Remote Included
• Dimensions: 12"L x 10"W x 2-7/16"H

Kenwood eXcelon KAC-X10D R/B

Class D Monoblock Amplifier

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Kenwood eXcelon KAC-X10D R/B

Class D Monoblock Amplifier

Class D Monoblock Amplifier • Peak Power Output: 1200 watts • RMS Power Output: 4 ohm: 300 watts x 1 channel / 2 ohm: 600 watts x 1 channel • 1 ohm load capability • S/N Ratio: 105 dB • CEA-2006 Compliant • Power MOS-FET switching power supply

Class D Monoblock Amplifier • Peak Power Output: 1200 watts • RMS Power Output: 4 ohm: 300 watts x 1 channel / 2 ohm: 600 watts x 1 channel • 1 ohm load capability • S/N Ratio: 105 dB • CEA-2006 Compliant • Power MOS-FET switching power supply

Boss CE1250M

1250W Chaos Epic Series Monoblock Power Amplifier with Line and Speaker Level Inputs

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Boss CE1250M

1250W Chaos Epic Series Monoblock Power Amplifier with Line and Speaker Level Inputs

Chaos Epic Series Monoblock Power Amplifier • 1250W Max • MOSFET Power Supply • LED Power and Protect Indicators • Variable Input Gain Control • 2-Way System Protection Circuitry • Heavy Duty Black Anodized Aluminum Heatsink

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Chaos Epic Series Monoblock Power Amplifier • 1250W Max • MOSFET Power Supply • LED Power and Protect Indicators • Variable Input Gain Control • 2-Way System Protection Circuitry • Heavy Duty Black Anodized Aluminum Heatsink

Hifonics XX-THOR R/B

3000W RMS Generation XX Series Class D Monoblock Amplifier

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Hifonics XX-THOR R/B

3000W RMS Generation XX Series Class D Monoblock Amplifier

Generation XX Series Monoblock Ultra Class D Car Amplifier • 3000W RMS x 1-Chan @ 1 ohm • 2100W RMS x 1-Chan @ 2 Ohm • RCA Output • Bass Remote • Illuminated Hifonics Badge • Removable Endcaps • 2 AWG Power Connectors

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Generation XX Series Monoblock Ultra Class D Car Amplifier • 3000W RMS x 1-Chan @ 1 ohm • 2100W RMS x 1-Chan @ 2 Ohm • RCA Output • Bass Remote • Illuminated Hifonics Badge • Removable Endcaps • 2 AWG Power Connectors

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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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