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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.
Series
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.
Brutus Series (77)
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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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Condition

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You are currently viewing discontinued products.

Kicker KX600.1

KX-Series 04KX600.1

KX600.1 big DISCONTINUED
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Kicker KX600.1

KX-Series 04KX600.1

600 watts RMS at 2 ohm • variable low-pass crossover • Class D design • subsonic filter • Amp-Strapping circuit • preamp outputs • remote bass level control

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600 watts RMS at 2 ohm • variable low-pass crossover • Class D design • subsonic filter • Amp-Strapping circuit • preamp outputs • remote bass level control

Kicker DX500.1

500W RMS Monoblock Class D DX Series Amplifier

11DX500.1 big DISCONTINUED
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Kicker DX500.1

500W RMS Monoblock Class D DX Series Amplifier

• RMS: 275W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Bass Boost 0-12 dB
• Balanced Differential Inputs for Noise Elimination
• Dimensions: 10-1/4"L x 8-5/16"W x 2-1/4"H

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• RMS: 275W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Bass Boost 0-12 dB
• Balanced Differential Inputs for Noise Elimination
• Dimensions: 10-1/4"L x 8-5/16"W x 2-1/4"H

EXCLUSIVE

Hifonics TXi 1508D R/B + Amplifier Kit

1500W RMS Class D Monoblock Titan TXi Series Amplifier with Included 0 AWG Amplifier Kit (TXi1508D)

No picture DISCONTINUED
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Hifonics TXi 1508D R/B + Amplifier Kit

1500W RMS Class D Monoblock Titan TXi Series Amplifier with Included 0 AWG Amplifier Kit (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 • Included 0 AWG Amplifier Kit

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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 • Included 0 AWG Amplifier Kit

Hifonics BX500D R/B

500W RMS, Brutus Series Class-D Monoblock Amplifier

BX500D big DISCONTINUED
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Hifonics BX500D R/B

500W RMS, Brutus Series Class-D Monoblock Amplifier

125W RMS x 1 at 4 ohm • 250W RMS x 1 at 2 ohm • 500W RMS x 1 at 1 ohm • Bass Remote Included • 1 ohm mono stable

125W RMS x 1 at 4 ohm • 250W RMS x 1 at 2 ohm • 500W RMS x 1 at 1 ohm • Bass Remote Included • 1 ohm mono stable

Crunch P1-3050.1 (Factory Refurbished)

3000W Max Monoblock Power One Series Class AB Car Amplifier

P1-3050.1 big DISCONTINUED
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Crunch P1-3050.1 (Factory Refurbished)

3000W Max Monoblock Power One Series Class AB Car Amplifier

• Peak: 750W x 1 @ 4 ohm, 1500W x 1 @ 2 ohm, 3000W x 1 @ 1 ohm
• 1 Pair of Preamp RCA Outputs
• Variable Bass Boost: 0 to +9 dB
• SEPP Class A/B Analog Amp
• Dimensions: 19-15/16"L x 9-1/8"W x 2-1/16"H

• Peak: 750W x 1 @ 4 ohm, 1500W x 1 @ 2 ohm, 3000W x 1 @ 1 ohm
• 1 Pair of Preamp RCA Outputs
• Variable Bass Boost: 0 to +9 dB
• SEPP Class A/B Analog Amp
• Dimensions: 19-15/16"L x 9-1/8"W x 2-1/16"H

Boss GT2500D

2500W Max, RiOT GT Series Class D Monoblock Amplifier (GT-2500D)

GT2500D big DISCONTINUED
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Boss GT2500D

2500W Max, RiOT GT Series Class D Monoblock Amplifier (GT-2500D)

Class D Monoblock Power Amplifier • 900 watts @ 4 Ohm RMS / 2500 watts Max Power • Variable Gain Control • Signal-to-Noise Ratio: <100dB • Remote Subwoofer Level Control

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Class D Monoblock Power Amplifier • 900 watts @ 4 Ohm RMS / 2500 watts Max Power • Variable Gain Control • Signal-to-Noise Ratio: <100dB • Remote Subwoofer Level Control

MB Quart FX1.600 (Factory Refurbished)

600W RMS 1-Channel Monoblock Formula Series Amplifier

FX1.600 big DISCONTINUED
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MB Quart FX1.600 (Factory Refurbished)

600W RMS 1-Channel Monoblock Formula Series Amplifier

Formula Series Monoblock Car Amplifier • 300W at 4 Ohm • 600W at 2 Ohm • PWM MOSFET Power Supply • MB QR-2 Wired REMOTE • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

Formula Series Monoblock Car Amplifier • 300W at 4 Ohm • 600W at 2 Ohm • PWM MOSFET Power Supply • MB QR-2 Wired REMOTE • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

MTX Audio Thunder Marine TM601D

Class D Monoblock Amplifier for Marine Use

TM601D big DISCONTINUED
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MTX Audio Thunder Marine TM601D

Class D Monoblock Amplifier for Marine Use

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 1000W
• 3-Way Protection Circuitry
• Selectable Bass Boost (0-6-12 dB)
• Class D Circuitry
• Dimensions: 6-5/16"W x 8-15/16"L x 2-1/4"H

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• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 1000W
• 3-Way Protection Circuitry
• Selectable Bass Boost (0-6-12 dB)
• Class D Circuitry
• Dimensions: 6-5/16"W x 8-15/16"L x 2-1/4"H

Hifonics BRX1100.1D-OPEN BOX

1100W RMS Class NextGen Super-D Monoblock Brutus Series Amplifier

BRX1100.1D big DISCONTINUED
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Hifonics BRX1100.1D-OPEN BOX

1100W RMS Class NextGen Super-D Monoblock Brutus Series Amplifier

• RMS: 450W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1100W x 1 @ 1 ohm
• Total RMS Power: 1100W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 40 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo
• Dimensions: 14-3/8"L x 10-5/16"W x 2-1/2"H

• RMS: 450W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1100W x 1 @ 1 ohm
• Total RMS Power: 1100W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 40 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo
• Dimensions: 14-3/8"L x 10-5/16"W x 2-1/2"H

Audiobahn A8000V

1600W Max, Intake Series MonoBlock Amplifier

A8000V big DISCONTINUED
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Audiobahn A8000V

1600W Max, Intake Series MonoBlock Amplifier

Intake Series Monoblock Amplifier • Peak: 1600 watts • RMS: 800 watts x 1 chan. @ 2 ohm • RMS: 400W x 1 chan. @ 4 ohm • PWM MOSFET Power Supply • RCA and Speaker Level Inputs • RCA Outputs • Soft Start Circuitry

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Intake Series Monoblock Amplifier • Peak: 1600 watts • RMS: 800 watts x 1 chan. @ 2 ohm • RMS: 400W x 1 chan. @ 4 ohm • PWM MOSFET Power Supply • RCA and Speaker Level Inputs • RCA Outputs • Soft Start Circuitry

Audiopipe AQX-2500.1

2500W, Class D Monoblock Elite Series Car Amplifier

AQX-2500.1 big DISCONTINUED
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Audiopipe AQX-2500.1

2500W, Class D Monoblock Elite Series Car Amplifier

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

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

JBL GTO1201.1II

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

GTO1201.1II big DISCONTINUED
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JBL GTO1201.1II

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

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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

EXCLUSIVE

DLS X-D11

1050W RMS, X-Program Single-Channel Monoblock Class D Amplifier (12-31011)

X-D11 big DISCONTINUED
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DLS X-D11

1050W RMS, X-Program Single-Channel Monoblock Class D Amplifier (12-31011)

X-Program Monoblock Class D Amplifier • 1050W • Dual Speaker Terminals • Preamp RCA outputs • 3-Way System Protection Circuitry • Speaker-Level Inputs • Variable Bass Boost • Variable Low-Pass Filter • Phase Shift

X-Program Monoblock Class D Amplifier • 1050W • Dual Speaker Terminals • Preamp RCA outputs • 3-Way System Protection Circuitry • Speaker-Level Inputs • Variable Bass Boost • Variable Low-Pass Filter • Phase Shift

MTX Audio RFL600D R/B

1200W Max, RFL Series Class D Monoblock Amplifier

RFL600D big DISCONTINUED
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MTX Audio RFL600D R/B

1200W Max, RFL Series Class D Monoblock Amplifier

Single-Channel Monoblock Car Amplifier • RFL Series • Adaptive Class D Technology • 1200 Watts Max • 600 Watts @ 2 ohm • 350 Watts @ 4 ohm • Active Fan Cooling • Bass Boost • EBC • CEA-2006 compliant

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Single-Channel Monoblock Car Amplifier • RFL Series • Adaptive Class D Technology • 1200 Watts Max • 600 Watts @ 2 ohm • 350 Watts @ 4 ohm • Active Fan Cooling • Bass Boost • EBC • CEA-2006 compliant

EXCLUSIVE

JBL Subwoofer + Kicker Amplifier Upgrade Bundle

CS1214 250W 12" CS Series Subwoofer + KX200.2 200W RMS KX Series 2-Channel Amplifier + XKIT82 2-Ch 8 Gauge Amplifier Installation Kit

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JBL Subwoofer + Kicker Amplifier Upgrade Bundle

CS1214 250W 12" CS Series Subwoofer + KX200.2 200W RMS KX Series 2-Channel Amplifier + XKIT82 2-Ch 8 Gauge Amplifier Installation Kit

• Subwoofer: RMS Power: 250W
• Amplifier: 50W x 2 Chan. @ 4 ohm
• 100W x 2 Chan. @ 2 ohm
• 8 Gauge 2-Channel Complete Amplifier Installation Kit

• Subwoofer: RMS Power: 250W
• Amplifier: 50W x 2 Chan. @ 4 ohm
• 100W x 2 Chan. @ 2 ohm
• 8 Gauge 2-Channel Complete Amplifier Installation Kit

EXCLUSIVE

Audiobahn A18001DJ + Amplifier Kit

2500W Max, Single-Channel Class D Monoblock Car Amplifier + 1/0 Gauge Amplifier Kit + Ring Terminals

A18001DJ_09PKD1 big DISCONTINUED
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Audiobahn A18001DJ + Amplifier Kit

2500W Max, Single-Channel Class D Monoblock Car Amplifier + 1/0 Gauge Amplifier Kit + Ring Terminals

Monoblock Class D Car Amplifier • MOSFET Power Supply • 700W RMS @ 4 ohm • 1300W RSMS @ 2 ohm • 2500W RMS @ 1 ohm • Dual Amplifier 1/0 Gauge Power Installation Kit • 3000 Watts Max • Direct-Connect Engineering

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Monoblock Class D Car Amplifier • MOSFET Power Supply • 700W RMS @ 4 ohm • 1300W RSMS @ 2 ohm • 2500W RMS @ 1 ohm • Dual Amplifier 1/0 Gauge Power Installation Kit • 3000 Watts Max • Direct-Connect Engineering

Alpine MRP-M850

800 watts, Class D MonoBlock Amplifier

MRP-M850 big DISCONTINUED
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Alpine MRP-M850

800 watts, Class D MonoBlock Amplifier

800 watts, Class D MonoBlock Amplifier • RMS Power Output: 4 ohm: 500 watts x 1 / 2 ohm: 800 watts x 1 • Frequency Response: 20 Hz - 200 Hz • MOSFET power supply • STAR Topology (minimizes internal noise and prevents ground interference) • Speaker and preamp-level inputs

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800 watts, Class D MonoBlock Amplifier • RMS Power Output: 4 ohm: 500 watts x 1 / 2 ohm: 800 watts x 1 • Frequency Response: 20 Hz - 200 Hz • MOSFET power supply • STAR Topology (minimizes internal noise and prevents ground interference) • Speaker and preamp-level inputs

Kole Audio KX1-2000D

2000W Max, KX Series Class D Monoblock Amplifier (KX12000D)

KX1-2000D big DISCONTINUED
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Kole Audio KX1-2000D

2000W Max, KX Series Class D Monoblock Amplifier (KX12000D)

KX Series Class D Monoblock Car Amplifier • 600W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • 1200W x 1 chan. @ 1 ohm • Fully regulated PWM MOSFET power supply • Preamp RCA outputs • Nickel-plated screw terminals

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KX Series Class D Monoblock Car Amplifier • 600W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • 1200W x 1 chan. @ 1 ohm • Fully regulated PWM MOSFET power supply • Preamp RCA outputs • Nickel-plated screw terminals

Infinity K600 Kappa Series Amplifier (Open Box)

1500W Peak (600W RMS) High Performance Kappa Series Class-D Monoblock 2-Ohm Stable Car Subwoofer Amplifier

K600 big DISCONTINUED
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Infinity K600 Kappa Series Amplifier (Open Box)

1500W Peak (600W RMS) High Performance Kappa Series Class-D Monoblock 2-Ohm Stable Car Subwoofer Amplifier

• Item Condition: Like New Open Box
• 380 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1500 Watts
• Variable low-pass filter: 32 - 320 Hz
• Sleek, brushed steel industrial design
• Upgradable Firmware via the microUSB port
• Speaker-level (high-level) inputs

• Item Condition: Like New Open Box
• 380 Watts RMS x 1 @ 4 ohm
• 600 Watts RMS x 1 @ 2 ohm
• Total Peak Power: 1500 Watts
• Variable low-pass filter: 32 - 320 Hz
• Sleek, brushed steel industrial design
• Upgradable Firmware via the microUSB port
• Speaker-level (high-level) inputs

Memphis Marine 16-MAD1000

1100W RMS, Class D Monoblock Marine MClass Series Amplifier

16-MAD1000 big DISCONTINUED
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Memphis Marine 16-MAD1000

1100W RMS, Class D Monoblock Marine MClass Series Amplifier

Memphis Marine Series Class D Monoblock Marine Amplifier • 300W x 1 chan. @ 4 ohm • 600W x 1 chan. @ 2 ohm • 1100W x 1 chan. @ 1 ohm • MOSFET power supply • Preamp RCA outputs • 1 Ohm stable operation

Memphis Marine Series Class D Monoblock Marine Amplifier • 300W x 1 chan. @ 4 ohm • 600W x 1 chan. @ 2 ohm • 1100W x 1 chan. @ 1 ohm • MOSFET power supply • Preamp RCA outputs • 1 Ohm stable operation

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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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