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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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Amplifiers ✕
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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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Z-Line Series (8)
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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.

Jensen Power 760.4

760W 4-Channel Power Series Amplifier with Black Gloss Finish

Power 760.4 big DISCONTINUED
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Jensen Power 760.4

760W 4-Channel Power Series Amplifier with Black Gloss Finish

• RMS: 75W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Variable Bass Boost
• High/Low Pass Crossovers
• RCA Pass Through Output
• 2-Way System Protection Circuitry
• CEA-2006 Compliant

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• RMS: 75W x 4 @ 4 ohm, 100W x 4 @ 2 ohm
• Variable Bass Boost
• High/Low Pass Crossovers
• RCA Pass Through Output
• 2-Way System Protection Circuitry
• CEA-2006 Compliant

Alpine PDX-F6 Open Box, Accepatble Condition (Used)

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Complete Used Functional)

PDX-F6 big DISCONTINUED
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Alpine PDX-F6 Open Box, Accepatble Condition (Used)

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Complete Used Functional)

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

Sony XMGS4 (Open Box, Complete)

700W Max Hi-Resolution Audio Compatible 4-Channel Amplifier

XM-GS4 big DISCONTINUED
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Sony XMGS4 (Open Box, Complete)

700W Max Hi-Resolution Audio Compatible 4-Channel Amplifier

• 150 watts x 4 chan. @ 4ohm
• 175 watts x 4 chan. @ 2 Ohm
• CEA-2006 Compliant Amplifier
• Ultra-wide frequency range that extends up to 100 kHz
• Engineered for minimal noise and maximum efficiency
• High-quality electrolytic capacitors assist in powering bright, versatile sound

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• 150 watts x 4 chan. @ 4ohm
• 175 watts x 4 chan. @ 2 Ohm
• CEA-2006 Compliant Amplifier
• Ultra-wide frequency range that extends up to 100 kHz
• Engineered for minimal noise and maximum efficiency
• High-quality electrolytic capacitors assist in powering bright, versatile sound

Rockford Fosgate P4004

1600W Max, Punch Series 4-Channel Amplifier

P4004 big DISCONTINUED
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Rockford Fosgate P4004

1600W Max, Punch Series 4-Channel Amplifier

4-ohm stable in bridged mode • Tri-way capable • MOSFET power supplies and output stages • MEHSA transfers heat efficiently from the MOSFET devices to the heat sink for high performance • TOPAZ eliminates ground loop noise • trans-ANA circuitry keeps preamp signal clean • preamp outputs • variable high-pass/low-pass crossover (40-400 Hz, 12 dB/octave) • variable Punch Bass boost (0-18 dB at 45 Hz) with remote

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4-ohm stable in bridged mode • Tri-way capable • MOSFET power supplies and output stages • MEHSA transfers heat efficiently from the MOSFET devices to the heat sink for high performance • TOPAZ eliminates ground loop noise • trans-ANA circuitry keeps preamp signal clean • preamp outputs • variable high-pass/low-pass crossover (40-400 Hz, 12 dB/octave) • variable Punch Bass boost (0-18 dB at 45 Hz) with remote

Soundstream ST4.1000D

1,000W Max (250W RMS) Stealth Series Class-D 4-Channel 2-Ohm Stable Amplifier

ST4.1000D big DISCONTINUED
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Soundstream ST4.1000D

1,000W Max (250W RMS) Stealth Series Class-D 4-Channel 2-Ohm Stable Amplifier

• 4 ohm: 900 watts x 4 chan.
• 2 ohm: 125 watts x 4 chan.
• Bridged, 4 ohm: 250 watts x 2 chan.
• Total Peak Power: 1000 Watts
• Compact Design Allows for Installation Anywhere
• Aluminum Heatsink
• 3" W x 6" L x 1.5" H

• 4 ohm: 900 watts x 4 chan.
• 2 ohm: 125 watts x 4 chan.
• Bridged, 4 ohm: 250 watts x 2 chan.
• Total Peak Power: 1000 Watts
• Compact Design Allows for Installation Anywhere
• Aluminum Heatsink
• 3" W x 6" L x 1.5" H

Hifonics ZXX-2000.4

2000W Peak Zeus Series Class-A/B 4-Channel 2-Ohm Stable Amplifier (ZXX-20004)

ZXX-2000.4 big DISCONTINUED
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Hifonics ZXX-2000.4

2000W Peak Zeus Series Class-A/B 4-Channel 2-Ohm Stable Amplifier (ZXX-20004)

• 250 Watts Peak x 4 @ 4 ohm
• 500 Watts Peak x 4 @ 2 ohm
• Total Peak Power: 2,000 Watts
• High- and Low-Pass Filterse
• Variable Bass Boost
• Aluminum Heatsink
• 22" W x 10" L x 6" H

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• 250 Watts Peak x 4 @ 4 ohm
• 500 Watts Peak x 4 @ 2 ohm
• Total Peak Power: 2,000 Watts
• High- and Low-Pass Filterse
• Variable Bass Boost
• Aluminum Heatsink
• 22" W x 10" L x 6" H

PowerBass ASA 400.4x

800W Max, Auto Sound Series 4-Channel Amplifier (ASA400.4x)

ASA400.4x big DISCONTINUED
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PowerBass ASA 400.4x

800W Max, Auto Sound Series 4-Channel Amplifier (ASA400.4x)

Auto Sound 4-Channel Class A/B Car Amplifier • 100 Watts x 4 Chan. @ 2 Ohm • 50 Watts x 4 Chan. @ 4 Ohm • 800 Watts Max • 3-Way System Protection Circuitry • LED Power And Protect Indicators • MOSFET Power Supply

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Auto Sound 4-Channel Class A/B Car Amplifier • 100 Watts x 4 Chan. @ 2 Ohm • 50 Watts x 4 Chan. @ 4 Ohm • 800 Watts Max • 3-Way System Protection Circuitry • LED Power And Protect Indicators • MOSFET Power Supply

Pyle PLMRMP3B

4-Channel Waterproof MP3/iPod Marine Power Amplifier (Black)

PLMRMP3B big DISCONTINUED
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Pyle PLMRMP3B

4-Channel Waterproof MP3/iPod Marine Power Amplifier (Black)

• 4 ohm: 100 watts x 4 chan.
• 2 ohm: 300 watts x 4 chan.
• Pulse Width Modulated MOSFET power supply

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• 4 ohm: 100 watts x 4 chan.
• 2 ohm: 300 watts x 4 chan.
• Pulse Width Modulated MOSFET power supply

Sony XM-N1004

1000W 4-Channel Stereo XM Series Class AB Car Amplifier

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Sony XM-N1004

1000W 4-Channel Stereo XM Series Class AB Car Amplifier

• RMS Power: 70W x 4 @ 4 ohm, 85W x 4 @ 2 ohm
• Total Peak Power: 1000W
• CEA-2006 Compliant/Preamp Outputs/LPF/HPF
• Dimensions: 8-5/8" L x 13-1/2" W x 2-1/4" H

1

• RMS Power: 70W x 4 @ 4 ohm, 85W x 4 @ 2 ohm
• Total Peak Power: 1000W
• CEA-2006 Compliant/Preamp Outputs/LPF/HPF
• Dimensions: 8-5/8" L x 13-1/2" W x 2-1/4" H

Hifonics Zeus ZRX1016.4

1000 Watt 4 Channel Zeus Series Class AB Amplifier

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Hifonics Zeus ZRX1016.4

1000 Watt 4 Channel Zeus Series Class AB Amplifier

• Max Power: 125W x 4 @ 4 ohm, 250W x 4 @ 2 ohm
• Total Peak Power: 2000W
• Variable Low and High Pass Filters
• Dimensions: 10" W x 15.7" L x 2.4" H

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• Max Power: 125W x 4 @ 4 ohm, 250W x 4 @ 2 ohm
• Total Peak Power: 2000W
• Variable Low and High Pass Filters
• Dimensions: 10" W x 15.7" L x 2.4" H

Massive Audio NX4

1600W Max (800W RMS) Full Range Class-AB 4-Channel Amplifier

119.99
NX4 big DISCONTINUED
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Massive Audio NX4

1600W Max (800W RMS) Full Range Class-AB 4-Channel Amplifier

• RMS: 100W x 4 @ 4 ohm, 200W x 4 @ 2 ohm, 400W x 2 @ 4 ohm bridged
• Total Peak Power: 1600W

Promo Savings Icon 119.99
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• RMS: 100W x 4 @ 4 ohm, 200W x 4 @ 2 ohm, 400W x 2 @ 4 ohm bridged
• Total Peak Power: 1600W

Crunch PZX900.4

900W 4-Channel PZX Powerzone Series Class AB Car Amplifier

PZX900.4 big DISCONTINUED
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Crunch PZX900.4

900W 4-Channel PZX Powerzone Series Class AB Car Amplifier

• 115 Watts Max x 4 @ 4 ohm
• 225 Watts Max x 4 @ 2 ohm
• 450 Watts Max x 2 @ 4 ohm, Bridged
• Total Peak Power: 900 Watts
• Speaker-level (high-level) inputs
• Variable Bass Boost: 0 to +9 dB bass boost at 45 Hz
• 4, 3 or 2 channel operation
• Selectable crossover modes: FULL / LPF / HPF

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• 115 Watts Max x 4 @ 4 ohm
• 225 Watts Max x 4 @ 2 ohm
• 450 Watts Max x 2 @ 4 ohm, Bridged
• Total Peak Power: 900 Watts
• Speaker-level (high-level) inputs
• Variable Bass Boost: 0 to +9 dB bass boost at 45 Hz
• 4, 3 or 2 channel operation
• Selectable crossover modes: FULL / LPF / HPF

Kicker DX200.4 (08DX200.4)

200W 4-Channel DX Series Amplifier (DX2004)

08DX200.4 big DISCONTINUED
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Kicker DX200.4 (08DX200.4)

200W 4-Channel DX Series Amplifier (DX2004)

• 50 Watts x 4-Channel @ 2 Ohm
• 25 Watts x 4-Channel @ 4 Ohm
• 100 Watts x 2-Channel @ 4 Ohm
• Muting Circuit
• 3 Automatic Turn-On Modes
• Balanced Differential Inputs

6

• 50 Watts x 4-Channel @ 2 Ohm
• 25 Watts x 4-Channel @ 4 Ohm
• 100 Watts x 2-Channel @ 4 Ohm
• Muting Circuit
• 3 Automatic Turn-On Modes
• Balanced Differential Inputs

Cerwin-Vega B4 Open Box Complete

600W Bomber Series 4-Channel Class D Digital Amplifier

B4 big DISCONTINUED
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Cerwin-Vega B4 Open Box Complete

600W Bomber Series 4-Channel Class D Digital Amplifier

• Item Condition: Open Box Complete
• RMS Power: 80W x 4 @ 4 ohm, 150W x 4 @ 2 ohm
• Dual Zone , operate two separate devices to two separate stages (front vs rear)
• Ultra Compact High Density Aluminium Alloy Chassis
• Direct FET Power Mosfet Output Stage
• Dimensions: 4.02"W x 8.7"L x 1.4"H

• Item Condition: Open Box Complete
• RMS Power: 80W x 4 @ 4 ohm, 150W x 4 @ 2 ohm
• Dual Zone , operate two separate devices to two separate stages (front vs rear)
• Ultra Compact High Density Aluminium Alloy Chassis
• Direct FET Power Mosfet Output Stage
• Dimensions: 4.02"W x 8.7"L x 1.4"H

Rockford Fosgate PRIME R300-4

300W Prime Series 4-Channel Amplifier

R300-4 big DISCONTINUED
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Rockford Fosgate PRIME R300-4

300W Prime Series 4-Channel Amplifier

• 50 Watts x 4-Chan. @ 4 Ohm
• 75 Watts x 4-Chan. @ 2 Ohm
• Selectable Bass Boost
• 2-Way System Protection Circuitry
• Extruded Aluminum Alloy Convection Heat Sink

34

• 50 Watts x 4-Chan. @ 4 Ohm
• 75 Watts x 4-Chan. @ 2 Ohm
• Selectable Bass Boost
• 2-Way System Protection Circuitry
• Extruded Aluminum Alloy Convection Heat Sink

Crunch PZi 100.4

600W Max, 4-Channel PowerZone Amplifier (PZi100.4)

PZi-100.4 big DISCONTINUED
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Crunch PZi 100.4

600W Max, 4-Channel PowerZone Amplifier (PZi100.4)

600W 4-Channel Amplifier • 100W x 4 chan. @ 4 Ohm • 150W x 4 chan. @ 2 Ohm • PWM power supply • illuminated logo • silver RCA line inputs/outputs • silver power connectors • powered by Maxxsonics

3

600W 4-Channel Amplifier • 100W x 4 chan. @ 4 Ohm • 150W x 4 chan. @ 2 Ohm • PWM power supply • illuminated logo • silver RCA line inputs/outputs • silver power connectors • powered by Maxxsonics

Kenwood eXcelon X301-4

600W Max X-Series Bridgeable 4-channel Amplifier

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Kenwood eXcelon X301-4

600W Max X-Series Bridgeable 4-channel Amplifier

• 50 Watts RMS x 4 @ 4 ohm
• 75 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 600 Watts
• CEA-2006 Compliant
• Variable low-pass and high-pass filter: 50 - 200Hz, 24 dB/octave
• Variable Bass Boost: 0 to +18 dB bass boost at 40Hz
• Speaker-level (high-level) inputs

• 50 Watts RMS x 4 @ 4 ohm
• 75 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 600 Watts
• CEA-2006 Compliant
• Variable low-pass and high-pass filter: 50 - 200Hz, 24 dB/octave
• Variable Bass Boost: 0 to +18 dB bass boost at 40Hz
• Speaker-level (high-level) inputs

Clarion APX4240

4-Channel Amplifier (APX 4240)

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Clarion APX4240

4-Channel Amplifier (APX 4240)

APX Series Class AB 4-Channel Car Amplifier • 60W x 4 chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • MOSFET power supply • Selectable bass boost • Speaker-level inputs • Preamp RCA outputs • Remote turn-on with “soft start”

1

APX Series Class AB 4-Channel Car Amplifier • 60W x 4 chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • MOSFET power supply • Selectable bass boost • Speaker-level inputs • Preamp RCA outputs • Remote turn-on with “soft start”

Audiopipe APCL-2004

2000W Consumer Line Series 4-Channel Class AB Amplifier

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Audiopipe APCL-2004

2000W Consumer Line Series 4-Channel Class AB Amplifier

• RMS Power: 100W x 4 @ 4 ohm, 150W x 4 @ 2 ohm
• Total Peak Power: 2000W
• Adjustable Low Pass Filter
• High Quality Aluminum Heat Sink
• Dimensions: 7" W x 15.1" L x 2.2" H

4

• RMS Power: 100W x 4 @ 4 ohm, 150W x 4 @ 2 ohm
• Total Peak Power: 2000W
• Adjustable Low Pass Filter
• High Quality Aluminum Heat Sink
• Dimensions: 7" W x 15.1" L x 2.2" H

Hifonics BXX800.4

800W Max Brutus Series Super Class A/B 2-ohm Stable 4-Channel Amplifier

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Hifonics BXX800.4

800W Max Brutus Series Super Class A/B 2-ohm Stable 4-Channel Amplifier

• 100W Max x 4 @ 4 ohm
• 400W Max x 4 @ 2 ohm
• 400W Max x 2 @ 4 ohm, bridged
• Total Peak Power: 800 Watts
• Low Pass and High Pass Filters
• 0-10 Bass Boost
• Aluminum Heatsink
• 9" W x 12.43" L x 2.5" H

3

• 100W Max x 4 @ 4 ohm
• 400W Max x 4 @ 2 ohm
• 400W Max x 2 @ 4 ohm, bridged
• Total Peak Power: 800 Watts
• Low Pass and High Pass Filters
• 0-10 Bass Boost
• Aluminum Heatsink
• 9" W x 12.43" L x 2.5" H

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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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