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

Discontinued 4-Channel 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.
Zeus Series (30)
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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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Planet Audio MB300.4D

MINI BANG 300W 4-Channel Full Range Class D Amplifier

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Planet Audio MB300.4D

MINI BANG 300W 4-Channel Full Range Class D Amplifier

• Full Range 4-Channel Amp
• Speaker Level Inputs
• Variable High/Low Pass Filters
• Illuminated End Panel Strips

• Full Range 4-Channel Amp
• Speaker Level Inputs
• Variable High/Low Pass Filters
• Illuminated End Panel Strips

Crunch PZ-2020.4 (PZ 20204)

2000W Powerzone Series 2 ohm Stable 4-Channel Class-A/B Amplifier

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Crunch PZ-2020.4 (PZ 20204)

2000W Powerzone Series 2 ohm Stable 4-Channel Class-A/B Amplifier

• 250 Watts Max x 4 @ 4 ohm
• 500 Watts Max x 4 @ 2 ohm
• 1000 Watts Max x 2 @ 4 ohm, Bridged
• Total Peak Power: 2000 Watts
• Preamp Outputs for Strapping Amplifiers
• 0-9dB Bass Boost
• Aluminum Heatsink

• 250 Watts Max x 4 @ 4 ohm
• 500 Watts Max x 4 @ 2 ohm
• 1000 Watts Max x 2 @ 4 ohm, Bridged
• Total Peak Power: 2000 Watts
• Preamp Outputs for Strapping Amplifiers
• 0-9dB Bass Boost
• Aluminum Heatsink

JBL CLUB-704

1000W Peak (400W RMS) Club Series 4-Channel Amplifier

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JBL CLUB-704

1000W Peak (400W RMS) Club Series 4-Channel Amplifier

• 70 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS Bridged x 2 @ 4 ohm
• Total Peak Power: 1000 Watts
• Slim chassis provides more flexible mounting options
• Split-dome convection heat-sink for extreme heat dissipation

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• 70 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS Bridged x 2 @ 4 ohm
• Total Peak Power: 1000 Watts
• Slim chassis provides more flexible mounting options
• Split-dome convection heat-sink for extreme heat dissipation

Power Acoustik MOFO4-2KD

2000W Peak (600W RMS) Class D MOFO Series 4-Channel Tower Chassis Car Amplifier

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Power Acoustik MOFO4-2KD

2000W Peak (600W RMS) Class D MOFO Series 4-Channel Tower Chassis Car Amplifier

• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

Hifonics BG-1000.4

1000W BRUTUS Gamma Series 4-Channel Car Audio Amplifier

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Hifonics BG-1000.4

1000W BRUTUS Gamma Series 4-Channel Car Audio Amplifier

• 1000 Watt Amplifier
• 4-Channel Class D
• CEA-2006 Compliant
• Ultra-Fi™ MOSFET Technology

• 1000 Watt Amplifier
• 4-Channel Class D
• CEA-2006 Compliant
• Ultra-Fi™ MOSFET Technology

Planet Audio BB4.1200

1200W Max (450W RMS) 2-ohm Stable 4-Channel Class-D Amplifier w/ Remote Level Control

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Planet Audio BB4.1200

1200W Max (450W RMS) 2-ohm Stable 4-Channel Class-D Amplifier w/ Remote Level Control

• 113 Watts RMS x 4 @ 4 ohm
• 225 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant
• 0 to 18dB Bass Boost
• Black Anodized Heat Sink

1

• 113 Watts RMS x 4 @ 4 ohm
• 225 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1200 Watts
• CEA-2006 Compliant
• 0 to 18dB Bass Boost
• Black Anodized Heat Sink

Sound Storm Labs (SSL) CG1604

Charge 1600W 4 Channel Full Range Class A/B Subwoofer Audio Amplifier

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Sound Storm Labs (SSL) CG1604

Charge 1600W 4 Channel Full Range Class A/B Subwoofer Audio Amplifier

• 150 Watts RMS x 4 @ 4 ohm
• 300 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1600 Watts
• CEA-2006 Compliant
• MOSFET Power Supply
• Dimensions: 6.5"W x 13.7"L x 2.5"H

1

• 150 Watts RMS x 4 @ 4 ohm
• 300 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1600 Watts
• CEA-2006 Compliant
• MOSFET Power Supply
• Dimensions: 6.5"W x 13.7"L x 2.5"H

Boss PF1800

1800W 4 Channel Phantom Series Full Range Class AB Amplifier

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Boss PF1800

1800W 4 Channel Phantom Series Full Range Class AB Amplifier

• RMS: 225W x 4 @ 4 ohm
• Total Peak Power: 1800W
• Gold-plated RCA low level and high level inputs
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Wired remote bass level control included
• 10.31" W x 13.50" L x 2.25" H

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• RMS: 225W x 4 @ 4 ohm
• Total Peak Power: 1800W
• Gold-plated RCA low level and high level inputs
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Wired remote bass level control included
• 10.31" W x 13.50" L x 2.25" H

BOSS AUDIO Riot R1004 400W 4 Channel Car Power Amplifier Amp Mosfet (12 Pack)

BOSS AUDIO Riot R1004 400W 4 Channel Car Power Amplifier Amp Mosfet (12 Pack)

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BOSS AUDIO Riot R1004 400W 4 Channel Car Power Amplifier Amp Mosfet (12 Pack)

BOSS AUDIO Riot R1004 400W 4 Channel Car Power Amplifier Amp Mosfet (12 Pack)

• RMS: 38W x 4 @ 4 ohm
• Peak: 100W x 4 @ 2 ohm
• Total Peak Power: 400W
• Frequency response: 12 - 22,000 Hz
• Dimensions: 9"W x 7-3/4"L x 2"H

15

• RMS: 38W x 4 @ 4 ohm
• Peak: 100W x 4 @ 2 ohm
• Total Peak Power: 400W
• Frequency response: 12 - 22,000 Hz
• Dimensions: 9"W x 7-3/4"L x 2"H

Massive Audio PX4S

960W RMS Class D Primo Series 4 Channel Car Amplifier

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Massive Audio PX4S

960W RMS Class D Primo Series 4 Channel Car Amplifier

• 150 watts x 4 channel @ 4 ohm
• 240 watts x 4 channel @ 2 ohm
• Bridged: 480 watts x 2 channel @ 4 ohm
• Total RMS Power: 960 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 150 watts x 4 channel @ 4 ohm
• 240 watts x 4 channel @ 2 ohm
• Bridged: 480 watts x 2 channel @ 4 ohm
• Total RMS Power: 960 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Power Acoustik MOFO4-3KD

3000W Peak (1000W RMS) MOFO Series Class D 4-Channel Car Amplifier

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Power Acoustik MOFO4-3KD

3000W Peak (1000W RMS) MOFO Series Class D 4-Channel Car Amplifier

• 190 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

• 190 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

Memphis PRX500.4V2

500W RMS Class D Power Reference Series 4 Channel Car Amplifier

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Memphis PRX500.4V2

500W RMS Class D Power Reference Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Realm A600.4

600W 4-Channel Class A/B Car Amplifier

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Realm A600.4

600W 4-Channel Class A/B Car Amplifier

• Multi-Color LED Protection
• High-Level Speaker Inputs
• Preamp RCA Outputs
• Variable Low/High-Pass Crossovers
• Discrete Plug Style Terminals
• CEA-2006 Compliant

• Multi-Color LED Protection
• High-Level Speaker Inputs
• Preamp RCA Outputs
• Variable Low/High-Pass Crossovers
• Discrete Plug Style Terminals
• CEA-2006 Compliant

Soundstream PN4.3500DX

3500W Peak (1200W RMS) Class D Picasso Nano Series 4-Channel Car Amplifier

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Soundstream PN4.3500DX

3500W Peak (1200W RMS) Class D Picasso Nano Series 4-Channel Car Amplifier

• 170 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• Bridged: 600 watts x 2 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 170 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• Bridged: 600 watts x 2 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Boss Elite BE1600.4

1600W Peak (750W RMS) Elite Series Class-AB 4-Channel Amplifier with Remote Bass Knob

Includes an Exclusive 5-Year Warranty!
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Boss Elite BE1600.4

1600W Peak (750W RMS) Elite Series Class-AB 4-Channel Amplifier with Remote Bass Knob

• 150 Watts RMS x 4 @ 4 ohm
• 300 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1600 Watts
• Variable Bass Boost: 0 to +18 dB bass boost
• Heavy duty aluminum alloy split-dome convection heat-sink for extreme heat dissipation
• 3-way protection circuitry (thermal, overload, and speaker short protection)

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Includes an Exclusive 5-Year Warranty!
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• 150 Watts RMS x 4 @ 4 ohm
• 300 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 1600 Watts
• Variable Bass Boost: 0 to +18 dB bass boost
• Heavy duty aluminum alloy split-dome convection heat-sink for extreme heat dissipation
• 3-way protection circuitry (thermal, overload, and speaker short protection)

American Bass XFL-DC4090

1000W Peak (600W RMS) Class D XFL Series 4 Channel Car Amplifier

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American Bass XFL-DC4090

1000W Peak (600W RMS) Class D XFL Series 4 Channel Car Amplifier

• 80 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 80 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Precision Power (PPI) A700.4D

700W RMS Class D ATOM Series 4-Channel Full Range Car Amplifier

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Precision Power (PPI) A700.4D

700W RMS Class D ATOM Series 4-Channel Full Range Car Amplifier

• 100 watts x 4 channel @ 4 ohm
• 175 watts x 4 channel @ 2 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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1

• 100 watts x 4 channel @ 4 ohm
• 175 watts x 4 channel @ 2 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

MTX JH3004

720W Peak (360W RMS) Jackhammer Series 4-Channel Class AB Amplifier

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MTX JH3004

720W Peak (360W RMS) Jackhammer Series 4-Channel Class AB Amplifier

• 60 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 180 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class A/B 2 ohm Stable 4-Channel-Channel Amplifier

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• 60 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 180 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class A/B 2 ohm Stable 4-Channel-Channel Amplifier

Focal FDPSport

Motorcycle & All-Terrain 4-Channel Amplifier (4 x 250W @ 2 Ohm)

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Focal FDPSport

Motorcycle & All-Terrain 4-Channel Amplifier (4 x 250W @ 2 Ohm)

• Motorcycle & All-Terrain 4-Channel Class D Amplifier
• 175W RMS x 4 at 4 ohm
• 250 W RMS x 4 at 2 ohm
• Bridged mode (4 Ohm): 500W RMS x 2
• Very small size for power output
• Highest level of crossover flexibility

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• Motorcycle & All-Terrain 4-Channel Class D Amplifier
• 175W RMS x 4 at 4 ohm
• 250 W RMS x 4 at 2 ohm
• Bridged mode (4 Ohm): 500W RMS x 2
• Very small size for power output
• Highest level of crossover flexibility

DS18 EXL-P800X4

800W RMS EXL Power Series 4-Channel Class A/B Amplifier

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DS18 EXL-P800X4

800W RMS EXL Power Series 4-Channel Class A/B Amplifier

• 150 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 800 watts

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• 150 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 800 watts

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    FAQ Frequently asked questions in Discontinued 4-Channel Amplifiers

    4 Channel Amplifiers Frequently Asked Questions (FAQ)
    A 4-channel amplifier is a type of car audio amplifier that features four separate channels, each capable of powering a speaker or a pair of speakers. By distributing power across four channels, you can connect your front and rear speakers to the amplifier, significantly enhancing the overall sound quality and clarity in your car audio system. With a 4-channel amplifier, you can achieve a balanced soundstage, where the music seems to come from different directions, providing an immersive listening experience. Additionally, these amplifiers often come with adjustable crossovers and gain controls, allowing you to fine-tune the audio output for each set of speakers, optimizing the sound reproduction according to your preferences.
    Yes, many 4-channel amplifiers are bridgeable, allowing you to combine two channels to power a single speaker or subwoofer with higher output power. This bridging capability is useful if you have a pair of high-powered front speakers or a powerful subwoofer that requires more power than a single channel can provide. However, it's essential to check the amplifier's specifications and instructions to confirm its bridgeability and the recommended bridging configurations. Not all 4-channel amplifiers support bridging, and improper bridging can damage the amplifier or connected speakers. If you are unsure about bridging your 4-channel amplifier, consult the amplifier's manual or reach out to Sonic Electronix customer support for expert assistance.
    To select the right 4-channel amplifier for your speakers, consider their power handling capabilities and impedance. First, identify the RMS power rating of your front and rear speakers. The amplifier's RMS power output per channel should match or slightly exceed the RMS power rating of your speakers to ensure optimal performance without distortion. Next, check the impedance (measured in ohms) of your speakers, as well as the amplifier's minimum and maximum impedance ratings. Match the speaker impedance with the appropriate amplifier channels to prevent compatibility issues. For example, if your speakers have an impedance of 4 ohms, make sure the amplifier channels for those speakers can handle a 4-ohm load. Paying attention to these specifications ensures a seamless integration of your speakers with the 4-channel amplifier.
    Yes, a 4-channel amplifier can be used to power additional speakers, such as tweeters or coaxial speakers, in your car audio system. Beyond the front and rear speakers, a 4-channel amplifier has the flexibility to accommodate additional speaker types, provided that the total load impedance and power requirements of the amplifier's channels are within its specifications. For example, if your 4-channel amplifier has two unused channels, you can use them to power additional speakers for improved sound coverage and audio performance. Be cautious not to overload the amplifier, and ensure that the speakers' impedance and power handling align with the available channels to avoid damaging the amplifier or speakers. If you have questions about expanding your audio system with a 4-channel amplifier, seek expert advice from Sonic Electronix.
    A proper and safe installation of a 4-channel amplifier is essential for optimal performance and to prevent any electrical or mechanical issues. To ensure a successful installation, start by reading the amplifier's user manual thoroughly, as it contains specific instructions and guidelines for installation. Follow all safety precautions and use the appropriate wiring and connectors rated for the amplifier's power output. Securely mount the amplifier in a well-ventilated area, away from heat sources, and avoid placing it on carpeted surfaces. Route and secure all cables carefully to avoid interference and potential hazards. Double-check all connections to ensure they are tight and secure. If you are not confident in installing the amplifier yourself, consider seeking professional installation services to ensure a safe and expertly done installation that optimizes the performance of your 4-channel amplifier and car audio system.
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