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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.

Hifonics X2200.1D (Factory Refurbished)

2200W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

X2200.1D big DISCONTINUED
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Hifonics X2200.1D (Factory Refurbished)

2200W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

• RMS Power: 950W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 2200W
• Variable Low Pass Filter
• 13.39"W x 2.5"H x 9.49"L

• RMS Power: 950W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 2200W
• Variable Low Pass Filter
• 13.39"W x 2.5"H x 9.49"L

Rockford Fosgate Power T1000-1bd Open Box

(Open Box) 1000W RMS, Compact Class BD Monoblock Car Amplifier

T1000-1bd big DISCONTINUED
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Rockford Fosgate Power T1000-1bd Open Box

(Open Box) 1000W RMS, Compact Class BD Monoblock Car Amplifier

Compact Class DB Monoblock Car Amplifier • 350W x 1 Chan. @ 4 Ohm • 650W x 1 Chan. @ 2 Ohm • 1000W x 1 Chan. @ 1 Ohm • Discrete Surface Mount Components • MEHSA MOSFET Power Supply • Utilizes TO-247 MOSFETs •

Compact Class DB Monoblock Car Amplifier • 350W x 1 Chan. @ 4 Ohm • 650W x 1 Chan. @ 2 Ohm • 1000W x 1 Chan. @ 1 Ohm • Discrete Surface Mount Components • MEHSA MOSFET Power Supply • Utilizes TO-247 MOSFETs •

JL Audio 250/1 Factory R/B

Factory Refurbished to Like New, Class D Monoblock Amplifier

250/1 big DISCONTINUED
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JL Audio 250/1 Factory R/B

Factory Refurbished to Like New, Class D Monoblock Amplifier

250W RMS Monoblock Amplifier

250W RMS Monoblock Amplifier

Hifonics X1500.1D-RB (Factory Refurbished)

1500W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

X1500.1D big DISCONTINUED
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Hifonics X1500.1D-RB (Factory Refurbished)

1500W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

• RMS Power: 600W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
• Total Peak Power: 1500W
• CEA-2006 Compliant/Preamp Outputs/LPF
• 12.60"W x 2.5"H x 9.49"L

• RMS Power: 600W x 1 @ 4 ohm, 1100W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
• Total Peak Power: 1500W
• CEA-2006 Compliant/Preamp Outputs/LPF
• 12.60"W x 2.5"H x 9.49"L

Hifonics BRX1400.1D-RB (Factory Refurbished)

1400W Brutus Series Monoblock Class D Car Amplifier

BRX1400.1D big DISCONTINUED
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Hifonics BRX1400.1D-RB (Factory Refurbished)

1400W Brutus Series Monoblock Class D Car Amplifier

• RMS: 550W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1400W x 1 @ 1 ohm
• Total Peak Power: 1400W
• CEA-2006 Compliant
• Ultra-Fi™ Pulse Width Modulated MOSFET Power Supply
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 10.31"W x 15.92"L x 2.52"H

• RMS: 550W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1400W x 1 @ 1 ohm
• Total Peak Power: 1400W
• CEA-2006 Compliant
• Ultra-Fi™ Pulse Width Modulated MOSFET Power Supply
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 10.31"W x 15.92"L x 2.52"H

Hifonics Brutus BRX1200.1D (Factory Refurbished)

1200W RMS Class NextGen Super-D Monoblock Brutus Series Amplifier

BRX1200.1D big DISCONTINUED
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Hifonics Brutus BRX1200.1D (Factory Refurbished)

1200W RMS Class NextGen Super-D Monoblock Brutus Series Amplifier

• RMS Power: 450W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 40 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo

• RMS Power: 450W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 40 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo

Hifonics X1100.1D- OPEN BOX 1

1100W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier w/ 2-year Warranty

X1100.1D big DISCONTINUED
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Hifonics X1100.1D- OPEN BOX 1

1100W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier w/ 2-year Warranty

• RMS Power: 400W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1100W x 1 @ 1 ohm
• Total Peak Power: 1100W
• CEA-2006 Compliant
• Class D Monoblock

• RMS Power: 400W x 1 @ 4 ohm, 700W x 1 @ 2 ohm, 1100W x 1 @ 1 ohm
• Total Peak Power: 1100W
• CEA-2006 Compliant
• Class D Monoblock

Alphasonik PMA800DA R/B

Factory Refurbished Class D Monoblock Amplifier

PMA800DA big DISCONTINUED
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Alphasonik PMA800DA R/B

Factory Refurbished Class D Monoblock Amplifier

1-Channel Class D Monoblock Power Amplifier • Remote mount digital voltmeter • Remote bass boost control • 1640W x 1 chan. @ 1 Ohm • 1200W x 1 chan. @ 2 Ohm • 800W x 1 chan. @ 4 Ohm

1-Channel Class D Monoblock Power Amplifier • Remote mount digital voltmeter • Remote bass boost control • 1640W x 1 chan. @ 1 Ohm • 1200W x 1 chan. @ 2 Ohm • 800W x 1 chan. @ 4 Ohm

Kenwood KAC-8105D Factory Refurbished

(Factory Refurbished) 1000W Max, Class D Monoblock Performance Series Power Amplifier

KAC-8105D big DISCONTINUED
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Kenwood KAC-8105D Factory Refurbished

(Factory Refurbished) 1000W Max, Class D Monoblock Performance Series Power Amplifier

GUARANTEED LOWEST PRICE. CONTACT US 24/7 • Class D Monoblock Car Amplifier • 300W x 1 chan. @ 4 ohm • 500W x 1 chan. @ 2 ohm • 1000W x 1 chan. Max • Speaker-level inputs • Gold Plated Preamp RCA outputs • Gold Plated Terminals

GUARANTEED LOWEST PRICE. CONTACT US 24/7 • Class D Monoblock Car Amplifier • 300W x 1 chan. @ 4 ohm • 500W x 1 chan. @ 2 ohm • 1000W x 1 chan. Max • Speaker-level inputs • Gold Plated Preamp RCA outputs • Gold Plated Terminals

Hifonics XX-Goliath

5,000 watt Power Amplifier

XX-GOLIATH big DISCONTINUED
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Hifonics XX-Goliath

5,000 watt Power Amplifier

Super-D Monoblock Amplifier • 5000W RMS x 1 @ 1 Ohm • 3200W RMS x 1 @ 2 Ohm • Illuminated Hifonics Logo • Gold Plated RCA Connectors

3

Super-D Monoblock Amplifier • 5000W RMS x 1 @ 1 Ohm • 3200W RMS x 1 @ 2 Ohm • Illuminated Hifonics Logo • Gold Plated RCA Connectors

Hifonics Brutus Class D 3000W RMS 1 Ohm Mono Car Subwoofer Amplifier (2 Pack)

Hifonics Brutus Class D 3000W RMS 1 Ohm Mono Car Subwoofer Amplifier (2 Pack)

No picture DISCONTINUED
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Hifonics Brutus Class D 3000W RMS 1 Ohm Mono Car Subwoofer Amplifier (2 Pack)

Hifonics Brutus Class D 3000W RMS 1 Ohm Mono Car Subwoofer Amplifier (2 Pack)

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

1

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

MTX Thunder Elite 1501D (TE1501D) Open Box

(Open Box) 3000W Max, Class D Monoblock Thunder Elite Amplifier

TE1501D big DISCONTINUED
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MTX Thunder Elite 1501D (TE1501D) Open Box

(Open Box) 3000W Max, Class D Monoblock Thunder Elite Amplifier

Thunder Elite Series 1-Channel Class D Car Amplifier • 500W x 1 chan. @ 4 ohm • 1000W x 1 chan. @ 2 ohm • 3000W Max • Semi Unregulated MOSFET • Fan-cooled System • Overload and thermal protection

1

Thunder Elite Series 1-Channel Class D Car Amplifier • 500W x 1 chan. @ 4 ohm • 1000W x 1 chan. @ 2 ohm • 3000W Max • Semi Unregulated MOSFET • Fan-cooled System • Overload and thermal protection

Kicker SX1250.1 Factory R/B

SX MonoBlock Class D Amplifier with Digital Sound Processing 04SX1250.1

SX1250.1 big DISCONTINUED
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Kicker SX1250.1 Factory R/B

SX MonoBlock Class D Amplifier with Digital Sound Processing 04SX1250.1

Factory Refurbished with 90 Days Warranty, 1250 watts RMS @ 1 ohm, Digital Signal Processing, "Sick Bay" monitoring system • Bass Remote Included

Factory Refurbished with 90 Days Warranty, 1250 watts RMS @ 1 ohm, Digital Signal Processing, "Sick Bay" monitoring system • Bass Remote Included

Alpine MRP-M1000 Open Box

Open Box, 1000W RMS, Class D Monoblock Amplifier

MRP-M1000 big DISCONTINUED
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Alpine MRP-M1000 Open Box

Open Box, 1000W RMS, Class D Monoblock Amplifier

V-Power Series Class D Monoblock Car Amplifier • 600W x 1 chan. @ 4 ohm • 1000W x 1 chan. @ 2 ohm • 2000W 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 • 600W x 1 chan. @ 4 ohm • 1000W x 1 chan. @ 2 ohm • 2000W x 1 chan. Max approx. • MOSFET Power supply • Bass EQ 0-12dB at 50Hz • Continuously adjustable gain control • Thermal management control

MTX Audio JackHammer JH1200 Open Box

(Open Box) 2400W Max, Class D Monoblock Jack Hammer Series Amplifier

JH1200 big DISCONTINUED
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MTX Audio JackHammer JH1200 Open Box

(Open Box) 2400W Max, Class D Monoblock Jack Hammer Series Amplifier

2400 Watt MTX Audio JackHammer Series Class D Monoblock Amplifier • 400 watts x 1 chan. @ 4 ohm • 800 watts x 1 chan. @ 2 ohm • 1200 watts x 1 chan. @ 1 ohm • Tuned Bass EQ • Internal Fan • Low-Pass Filter • CEA-2006 Compliant

2400 Watt MTX Audio JackHammer Series Class D Monoblock Amplifier • 400 watts x 1 chan. @ 4 ohm • 800 watts x 1 chan. @ 2 ohm • 1200 watts x 1 chan. @ 1 ohm • Tuned Bass EQ • Internal Fan • Low-Pass Filter • CEA-2006 Compliant

Crunch GP1500D Open Box

(Open Box: Amp Has Small Dent) 1500W Max, Ground Pounder Class D Monoblock Amplifier GP 1500D

GP1500D big DISCONTINUED
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Crunch GP1500D Open Box

(Open Box: Amp Has Small Dent) 1500W Max, Ground Pounder Class D Monoblock Amplifier GP 1500D

Ground Pounder Series 1-Channel Class D Car Amplifier • 375W x 1 chan. @ 4 ohm • 750W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm Max • PWM MOSFET Power Supply • Silver-plated power connectors • Silver-plated RCA inputs and outputs

Ground Pounder Series 1-Channel Class D Car Amplifier • 375W x 1 chan. @ 4 ohm • 750W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm Max • PWM MOSFET Power Supply • Silver-plated power connectors • Silver-plated RCA inputs and outputs

Kicker 08ZX400.1 Open Box

(Open Box) 400W RMS, Class D Monoblock ZX Series Amplifier (ZX400.1, 08ZX4001, ZX4001)

08ZX400.1 big DISCONTINUED
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Kicker 08ZX400.1 Open Box

(Open Box) 400W RMS, Class D Monoblock ZX Series Amplifier (ZX400.1, 08ZX4001, ZX4001)

ZX Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 400W x 1 chan. @ 2 ohm • Balanced differential inputs make KICKER ZX Amplifiers compatible with any factory radios

ZX Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 400W x 1 chan. @ 2 ohm • Balanced differential inputs make KICKER ZX Amplifiers compatible with any factory radios

Alpine PDX-M12-OPEN BOX

1200W RMS, PDX Series Monoblock Power Density Digital Amplifier

PDX-M12 big DISCONTINUED
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Alpine PDX-M12-OPEN BOX

1200W RMS, PDX Series Monoblock Power Density Digital Amplifier

• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

• RMS: 1200W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• 6-Layer Glass Epoxy PC Board and Compact Size
• Thermal Protection Circuitry
• Dimensions: 7-9/16"D x 10-1/8"W x 2"H

Soundstream PCA1-650D R/B

650W Picasso Series Class D Monoblock Amplifier

PCA1-650D big DISCONTINUED
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Soundstream PCA1-650D R/B

650W Picasso Series Class D Monoblock Amplifier

Picasso Monoblock Class D Car Amplifier • 650W x 1 Chan. @ 2 Ohm • 500W x 1 Chan. @ 4 Ohm • High Quality FR-4 Circuit Board • TST(Twin Stack Technology) • Variable Low-Pass Filter • Subsonic Filter • Phase Shift

Picasso Monoblock Class D Car Amplifier • 650W x 1 Chan. @ 2 Ohm • 500W x 1 Chan. @ 4 Ohm • High Quality FR-4 Circuit Board • TST(Twin Stack Technology) • Variable Low-Pass Filter • Subsonic Filter • Phase Shift

PowerBass ASA 1000.1Dx (Factory Refurbished)

2000W Max, Auto Sound Series Class D Monoblock Amplifier (ASA1000.1Dx)

ASA1000.1Dx big DISCONTINUED
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PowerBass ASA 1000.1Dx (Factory Refurbished)

2000W Max, Auto Sound Series Class D Monoblock Amplifier (ASA1000.1Dx)

• Auto Sound Monoblock Class D Car Amplifier
• 220 Watts x 1 Chan. @ 4 Ohm
• 500 Watts x 1 Chan. @ 2 Ohm
• 2000 Watts Max
• 3-Way System Protection Circuitry
• LED Power And Protect Indicators
• MOSFET Power Supply

• Auto Sound Monoblock Class D Car Amplifier
• 220 Watts x 1 Chan. @ 4 Ohm
• 500 Watts x 1 Chan. @ 2 Ohm
• 2000 Watts Max
• 3-Way System Protection Circuitry
• LED Power And Protect Indicators
• MOSFET Power Supply

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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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