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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.
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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.

Crunch PZX1800.4

1800W 4-Channel Powerzone Series Class AB Car Amplifier

PZX1800.4 big DISCONTINUED
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Crunch PZX1800.4

1800W 4-Channel Powerzone Series Class AB Car Amplifier

• RMS Power: 225W x 4 @ 4 ohm, 450W x 4 @ 2 ohm, 900W x 2 @ 4 ohm Bridged
• Total Peak Power: 1800W
• Rugged MOSFET Pulse Width Modulation Power Supply

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• RMS Power: 225W x 4 @ 4 ohm, 450W x 4 @ 2 ohm, 900W x 2 @ 4 ohm Bridged
• Total Peak Power: 1800W
• Rugged MOSFET Pulse Width Modulation Power Supply

Kenwood KAC-8405

360W 4-Channel Performance Series Amplifier

KAC-8405 big DISCONTINUED
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Kenwood KAC-8405

360W 4-Channel Performance Series Amplifier

• 60W x 4-Chan. @ 4 ohm
• 90W x 4-Chan. @ 2 ohm
• 180W x 2 chan. @ 4 ohm
• 720W Max
• Built-in cooling fan
• Short circuit, DC offset, overload, and thermal protection circuitry

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• 60W x 4-Chan. @ 4 ohm
• 90W x 4-Chan. @ 2 ohm
• 180W x 2 chan. @ 4 ohm
• 720W Max
• Built-in cooling fan
• Short circuit, DC offset, overload, and thermal protection circuitry

Rockford Fosgate Punch P400-4

400W RMS Punch Series Compact 4-Channel Amplifier

P400-4 big DISCONTINUED
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Rockford Fosgate Punch P400-4

400W RMS Punch Series Compact 4-Channel Amplifier

Punch Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 110W x 4 chan. @ 2 ohm • Bridged, 4 ohm: 200W x 2 chan. • MOSFET Power Supply

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Punch Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 110W x 4 chan. @ 2 ohm • Bridged, 4 ohm: 200W x 2 chan. • MOSFET Power Supply

Lightning Audio Strike S4.400.4

400 watts, 4-Channel Amplifier

S4.400.4 big DISCONTINUED
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Lightning Audio Strike S4.400.4

400 watts, 4-Channel Amplifier

400 watts, 4-Channel Amplifier • 4 ohm: 50 watts x 4 • 2 ohm: 100 watts x 4 • Bridged, 4 ohm: 200 watts x 2 • Power Connector Terminals • High level Speaker inputs • Crossover Filter Switch • Pass thru outputs • Subsonic control

400 watts, 4-Channel Amplifier • 4 ohm: 50 watts x 4 • 2 ohm: 100 watts x 4 • Bridged, 4 ohm: 200 watts x 2 • Power Connector Terminals • High level Speaker inputs • Crossover Filter Switch • Pass thru outputs • Subsonic control

Autotek AT1200 (AT-1200)

1200W, 4-Channel Super Sport AT Series Car Amplifier

AT1200 big DISCONTINUED
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Autotek AT1200 (AT-1200)

1200W, 4-Channel Super Sport AT Series Car Amplifier

Super Sport AT 4-Channel Class A/B Car Amplifier • 150 Watts x 4 Chan. @ 4 Ohm • 300 Watts x 4 Chan. @ 2 Ohm • Twin Coil MOSFET Auto Step Power Supply • Pro-Fi Outputs • Soft Start Turn-On • 4-Way System Protection •

Super Sport AT 4-Channel Class A/B Car Amplifier • 150 Watts x 4 Chan. @ 4 Ohm • 300 Watts x 4 Chan. @ 2 Ohm • Twin Coil MOSFET Auto Step Power Supply • Pro-Fi Outputs • Soft Start Turn-On • 4-Way System Protection •

Pioneer GM-A6604

760W Peak (360W RMS) 4-Channel A Series Bridgeable Class AB 2-Ohm Stable Car Amplifier

GM-A6604 big DISCONTINUED
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Pioneer GM-A6604

760W Peak (360W RMS) 4-Channel A Series Bridgeable Class AB 2-Ohm Stable Car Amplifier

• RMS: 60W x 4 @ 4 ohm, 90W x 4 @ 2 ohm, 180W x 2 @ 4 ohm
• Total Peak Power: 760W
• CEA-2006 Compliant
• Dimensions: 13-3/4"W x 8-1/2"L x 2-1/2"H

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• RMS: 60W x 4 @ 4 ohm, 90W x 4 @ 2 ohm, 180W x 2 @ 4 ohm
• Total Peak Power: 760W
• CEA-2006 Compliant
• Dimensions: 13-3/4"W x 8-1/2"L x 2-1/2"H

Alpine MRP-F450

4-Channel Amplifier

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Alpine MRP-F450

4-Channel Amplifier

4-channel car amplifier • 70W RMS x 4 @ 4 ohm • 100W RMS x 4 @ 2 ohm • 200W RMS x 2 bridged output @ 4 ohm • Gold-plated screw terminals

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4-channel car amplifier • 70W RMS x 4 @ 4 ohm • 100W RMS x 4 @ 2 ohm • 200W RMS x 2 bridged output @ 4 ohm • Gold-plated screw terminals

Autotek SS3500.4

3500W Peak Super Sport Class-A/B 4-Channel 2-Ohm Stable Amplifier

SS3500.4 big DISCONTINUED
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Autotek SS3500.4

3500W Peak Super Sport Class-A/B 4-Channel 2-Ohm Stable Amplifier

• 425 Watts Peak x 4 @ 4 ohm
• 875 Watts Peak x 4 @ 2 ohm
• 1750 Watts Peak x 2 @ 4 ohm, Bridged
• Total Peak Power: 3500 Watts
• Built-In High and Low Pass Filters
• Heavy Duty Aluminum Heatsink
• Dimensions: 12" W x 10.25" L x 2" H

• 425 Watts Peak x 4 @ 4 ohm
• 875 Watts Peak x 4 @ 2 ohm
• 1750 Watts Peak x 2 @ 4 ohm, Bridged
• Total Peak Power: 3500 Watts
• Built-In High and Low Pass Filters
• Heavy Duty Aluminum Heatsink
• Dimensions: 12" W x 10.25" L x 2" H

Soundstream RUB4.600

600W Rubicon Series 4-Channel Class AB Car Amplifier

RUB4.600 big DISCONTINUED
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Soundstream RUB4.600

600W Rubicon Series 4-Channel Class AB Car Amplifier

• Rubicon Series 4-Channel Class AB Car Amplifier
• 100W x 4 Chan. @ 4 ohm • 150W x 4 Chan. @ 2 ohm
• 600 Watts Max
• Selectable Bass Boost
• Intelligent Distress Indicator
• Infinitely Variable Crossovers

1

• Rubicon Series 4-Channel Class AB Car Amplifier
• 100W x 4 Chan. @ 4 ohm • 150W x 4 Chan. @ 2 ohm
• 600 Watts Max
• Selectable Bass Boost
• Intelligent Distress Indicator
• Infinitely Variable Crossovers

Cadence Z4000HC (Factory Refurbished)

200 Watts Max (100W RMS) 4 Channel Z Ultradrive Series Amplifier

LS-Z4000HC-RB big DISCONTINUED
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Cadence Z4000HC (Factory Refurbished)

200 Watts Max (100W RMS) 4 Channel Z Ultradrive Series Amplifier

• 25 Watts RMS x 4 @ 4 ohm • Total Peak Power: 200 Watts
• Total RMS power output: 100 watts
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• 3-way protection circuitry (thermal, overload, and speaker short protection)

• 25 Watts RMS x 4 @ 4 ohm • Total Peak Power: 200 Watts
• Total RMS power output: 100 watts
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• 3-way protection circuitry (thermal, overload, and speaker short protection)

MTX Audio TC4004

1200W Max, Thunder TC 4-Channel Amplifier

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MTX Audio TC4004

1200W Max, Thunder TC 4-Channel Amplifier

1200 watts Max, Class A/B 4-Channel Amplifier • 100 watts x 4 chan. @ 2 ohm • 200 watts x 2 chan. @ 4 ohm Bridged • CEA-2006 Compliant • 12 dB per Octave, Adjustable High Pass and Low Pass Crossover • Smart Engage Auto Turn-On for easy installation with factory radios • Frequency Response: 20 - 20,000 Hz

4

1200 watts Max, Class A/B 4-Channel Amplifier • 100 watts x 4 chan. @ 2 ohm • 200 watts x 2 chan. @ 4 ohm Bridged • CEA-2006 Compliant • 12 dB per Octave, Adjustable High Pass and Low Pass Crossover • Smart Engage Auto Turn-On for easy installation with factory radios • Frequency Response: 20 - 20,000 Hz

Clarion APA450 Refurbished

(Factory Refurbished) 400W Max, 4-Channel Power Amplifier

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Clarion APA450 Refurbished

(Factory Refurbished) 400W Max, 4-Channel Power Amplifier

Power Series 4-Channel Class AB Car Amplifier • 50 Watts x 4 Chan. @ 4 Ohm • 100 Watts x 4 Chan. @ 2 Ohm • 400 Watts Max • Signal Sensing Speaker-Level Inputs • Fan Cooled • Heavy Duty Aluminum Alloy Heatsink

Power Series 4-Channel Class AB Car Amplifier • 50 Watts x 4 Chan. @ 4 Ohm • 100 Watts x 4 Chan. @ 2 Ohm • 400 Watts Max • Signal Sensing Speaker-Level Inputs • Fan Cooled • Heavy Duty Aluminum Alloy Heatsink

Precision Power PPI BA1600.4

1600W Black Ice Series 4 Channel Class AB Car Amplifier

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Precision Power PPI BA1600.4

1600W Black Ice Series 4 Channel Class AB Car Amplifier

• RMS Power: 130W x 4 @ 4 ohm, 200W x 4 @ 2 ohm, 400W x 2 @ 4 ohm Bridged
• Total Peak Power: 1600W
• Variable 12dB High, Low, & Subsonic Crossovers
• Dimensions: 8.6"W x 15.50"L x 2.3"H

3

• RMS Power: 130W x 4 @ 4 ohm, 200W x 4 @ 2 ohm, 400W x 2 @ 4 ohm Bridged
• Total Peak Power: 1600W
• Variable 12dB High, Low, & Subsonic Crossovers
• Dimensions: 8.6"W x 15.50"L x 2.3"H

Audiopipe APCL-1504

1500W Consumer Line Series 4-Channel Class AB Car Amplifier

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Audiopipe APCL-1504

1500W Consumer Line Series 4-Channel Class AB Car Amplifier

• RMS Power: 75W x 4 @ 4 ohm, 125W x 4 @ 2 ohm, 225 x 2 @ 4 ohm, Bridged
• Total Peak Power: 1500W
• Variable High and Low Pass Crossovers
• High Quality Aluminum Heat Sink
• Dimensions: 7" W x 15" L x 2.2" H

2

• RMS Power: 75W x 4 @ 4 ohm, 125W x 4 @ 2 ohm, 225 x 2 @ 4 ohm, Bridged
• Total Peak Power: 1500W
• Variable High and Low Pass Crossovers
• High Quality Aluminum Heat Sink
• Dimensions: 7" W x 15" L x 2.2" H

Kenwood KAC-8404

600W Max, 4-Channel Amplifier

KAC-8404 big DISCONTINUED
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Kenwood KAC-8404

600W Max, 4-Channel Amplifier

4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 75W x 4 chan. @ 2 ohm • 180W x 2 chan. @ 4 ohm • 150W x 4 chan. Max • Built-in cooling fan • Short circuit, DC offset, overload, and thermal protection circuitry

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4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 75W x 4 chan. @ 2 ohm • 180W x 2 chan. @ 4 ohm • 150W x 4 chan. Max • Built-in cooling fan • Short circuit, DC offset, overload, and thermal protection circuitry

Crunch GPV 1600.4 (GPV1600.4)

1600W Max, Ground Pounder Series 4-Channel Amplifier

GPV1600.4 big DISCONTINUED
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Crunch GPV 1600.4 (GPV1600.4)

1600W Max, Ground Pounder Series 4-Channel Amplifier

Ground Pounder Series Amplifier • 4-Channel • 200W x4 Chan @ 4 ohm • 400W x4 Chan @ 2 ohm • 1600 Watts Max • Full Range Line Output • High Level Inputs • Illuminated Crunch Badge • Unbalanced Input RCA Jack •

3

Ground Pounder Series Amplifier • 4-Channel • 200W x4 Chan @ 4 ohm • 400W x4 Chan @ 2 ohm • 1600 Watts Max • Full Range Line Output • High Level Inputs • Illuminated Crunch Badge • Unbalanced Input RCA Jack •

Hifonics ZXX-1000.4

1000W Peak Zeus Series Class-A/B 4-Channel 4-Ohm Stable Amplifier (ZXX10004)

ZXX-1000.4 big DISCONTINUED
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Hifonics ZXX-1000.4

1000W Peak Zeus Series Class-A/B 4-Channel 4-Ohm Stable Amplifier (ZXX10004)

• 125 Watts Peak x 4 @ 4 ohm
• 250 Watts Peak x 4 @ 2 ohm
• Total Peak Power: 500 Watts
• Low-Pass Filter and High-Pass Filter
• Variable Bass Boost
• Aluminum Heatsink
• 15.7" W x 10" L x 2.4" H

1

• 125 Watts Peak x 4 @ 4 ohm
• 250 Watts Peak x 4 @ 2 ohm
• Total Peak Power: 500 Watts
• Low-Pass Filter and High-Pass Filter
• Variable Bass Boost
• Aluminum Heatsink
• 15.7" W x 10" L x 2.4" H

Phoenix Gold Ryval V754

1000W Max, 4-Channel Amplifier (Rival)

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Phoenix Gold Ryval V754

1000W Max, 4-Channel Amplifier (Rival)

Ryval Series 4-Channel Class AB Car Amplifier • 75W x 4 chan. @ 4 ohm • 130W x 4 chan. @ 2 ohm • 250W x 2 chan. @ 4 ohm • 500W x 2 chan. Max • Speaker-level input • Preamp RCA outputs

2

Ryval Series 4-Channel Class AB Car Amplifier • 75W x 4 chan. @ 4 ohm • 130W x 4 chan. @ 2 ohm • 250W x 2 chan. @ 4 ohm • 500W x 2 chan. Max • Speaker-level input • Preamp RCA outputs

Panasonic CY-PA4003U

4-Channel Amplifier

CY-PA4003U big DISCONTINUED
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Panasonic CY-PA4003U

4-Channel Amplifier

4-Channel Class AB Car Amplifier • 64W x 4 chan. RMS • 225W x 4 chan. Max • MOSFET power supply • Versatile Bridgeable Amp (4/3/2 channel operation) • High Pass/Low Pass Filter • Gold-plated RCA Connectors • Gold-plated Speaker Terminals • Thermal shutdown Protection

1

4-Channel Class AB Car Amplifier • 64W x 4 chan. RMS • 225W x 4 chan. Max • MOSFET power supply • Versatile Bridgeable Amp (4/3/2 channel operation) • High Pass/Low Pass Filter • Gold-plated RCA Connectors • Gold-plated Speaker Terminals • Thermal shutdown Protection

JL Audio e6450

6-Channel System Amplifier

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JL Audio e6450

6-Channel System Amplifier

6-Channel System Amplifier • Absolute Symmetry Class AB Circuit • 75W RMS x 6 @ 2 • 150W RMS x 3 @ 4 (Bridged) • High and Low Level Inputs • Bass EQ (0/+6dB) • 3 Pair RCA Inputs • Adjustable Crossover • Adjustable Input Sensitivity

1

6-Channel System Amplifier • Absolute Symmetry Class AB Circuit • 75W RMS x 6 @ 2 • 150W RMS x 3 @ 4 (Bridged) • High and Low Level Inputs • Bass EQ (0/+6dB) • 3 Pair RCA Inputs • Adjustable Crossover • Adjustable Input Sensitivity

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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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