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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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EFX HD4300 by Scosche

800W Max, 4-Channel Amplifier (HD-4300)

HD4300 big DISCONTINUED
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EFX HD4300 by Scosche

800W Max, 4-Channel Amplifier (HD-4300)

800W 4-Channel Amplifier • 65W x 4 chan. @ 4 Ohm • 75W x 4 chan. @ 2 Ohm • extruded aluminum heatsink • overheating/short circuit protection • soft start turn-on/off • RCA line/speaker inputs

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800W 4-Channel Amplifier • 65W x 4 chan. @ 4 Ohm • 75W x 4 chan. @ 2 Ohm • extruded aluminum heatsink • overheating/short circuit protection • soft start turn-on/off • RCA line/speaker inputs

MB Quart PAB 5400

Premium Series 5-Channel Amplifier (PAB5400)

PAB-5400 big DISCONTINUED
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MB Quart PAB 5400

Premium Series 5-Channel Amplifier (PAB5400)

Premium Series Class AB 5-Channel Amplifier • 55W x 4 chan. + 200W x 1 chan. @ 4 ohm • 80W x 4 chan. + 300W x 1 chan. @ 2 ohm • PWM MOSFET power supply • Preamp RCA outputs • Focused mass aluminum heat sink

Premium Series Class AB 5-Channel Amplifier • 55W x 4 chan. + 200W x 1 chan. @ 4 ohm • 80W x 4 chan. + 300W x 1 chan. @ 2 ohm • PWM MOSFET power supply • Preamp RCA outputs • Focused mass aluminum heat sink

MB Quart RAA4200

RAA4200 big DISCONTINUED
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MB Quart RAA4200

800 watts RMS 4-channel amplifier • Reference Series • signal/noise ratio: >80 dB • input signal: 150mV - 8V • dimensions: 11" x 15.75" x 2.25" • dissipation topology: cast aluminum heatsinks • RCA signal input

800 watts RMS 4-channel amplifier • Reference Series • signal/noise ratio: >80 dB • input signal: 150mV - 8V • dimensions: 11" x 15.75" x 2.25" • dissipation topology: cast aluminum heatsinks • RCA signal input

Power Acoustik GT4-900

900W 4-Channel Gothic Series Class AB Car Amplifier

GT4-900 big DISCONTINUED
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Power Acoustik GT4-900

900W 4-Channel Gothic Series Class AB Car Amplifier

• 4 ohm: 75 watts x 4-Chan.
• 2 ohm: 95 watts x 4-Chan.
• Bridged, 4 ohm: 190 watts x 2 chan.
• Max power output: 900 watts

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• 4 ohm: 75 watts x 4-Chan.
• 2 ohm: 95 watts x 4-Chan.
• Bridged, 4 ohm: 190 watts x 2 chan.
• Max power output: 900 watts

Boston Acoustics GT-475

500W RMS, GT Reference Series 4-Channel Amplifier

GT-475 big DISCONTINUED
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Boston Acoustics GT-475

500W RMS, GT Reference Series 4-Channel Amplifier

GT Series 4-Channel Reference Amplifier • 75W x 4 Chan. @ 4 Ohm • 120W x 4 Chan. @ 2 Ohm • Fully Computer-Controlled Diagnostics System • Q-Tune™ Technology • Fan Cooled Aluminum Alloy Heatsink •

GT Series 4-Channel Reference Amplifier • 75W x 4 Chan. @ 4 Ohm • 120W x 4 Chan. @ 2 Ohm • Fully Computer-Controlled Diagnostics System • Q-Tune™ Technology • Fan Cooled Aluminum Alloy Heatsink •

Cadence ZRS C4

1800W 4-Channel ZRS Series Class A/B Full Range Competition Car Amplifier

ZRS C4 big DISCONTINUED
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Cadence ZRS C4

1800W 4-Channel ZRS Series Class A/B Full Range Competition Car Amplifier

• RMS: 150W x 4 @ 4 ohm, 225W x 4 @ 2 ohm• Bridged: 450W x 2 @ 4 ohm
• Total Peak Power: 1800W
• 16V Capable Power Supply
• Bipolar Japanese Sanken Outputs
• 11.6"W x 22"L x 2.7"H

• RMS: 150W x 4 @ 4 ohm, 225W x 4 @ 2 ohm• Bridged: 450W x 2 @ 4 ohm
• Total Peak Power: 1800W
• 16V Capable Power Supply
• Bipolar Japanese Sanken Outputs
• 11.6"W x 22"L x 2.7"H

JL Audio e4300

440 watts, Class A/B 4-Channel Amplifier

e4300 big DISCONTINUED
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JL Audio e4300

440 watts, Class A/B 4-Channel Amplifier

440W RMS Class AB Four-Channel System Amplifier • Absolute Symmetry Class AB Circuit • On-board crossover: HPF/LPF(50-200 Hz.) • 110 watts x 4 chan. @ 2 Ohm(14.4V) • Low(RCA) and high-level inputs • CEA-2006 Compliant

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440W RMS Class AB Four-Channel System Amplifier • Absolute Symmetry Class AB Circuit • On-board crossover: HPF/LPF(50-200 Hz.) • 110 watts x 4 chan. @ 2 Ohm(14.4V) • Low(RCA) and high-level inputs • CEA-2006 Compliant

Absolute BLA3000.4

3000W Max Blast Series 4-Channel Car Amplifier

BLA3000.4 big DISCONTINUED
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Absolute BLA3000.4

3000W Max Blast Series 4-Channel Car Amplifier

Blast Series 4-Channel Class A/B Car Amplifier • 3000W Max • 160W x 4-Chan @ 2 Ohm • Preamp RCA Outputs • 3-Way System Protection Circuitry • Variable High/Low-Pass Filter

Blast Series 4-Channel Class A/B Car Amplifier • 3000W Max • 160W x 4-Chan @ 2 Ohm • Preamp RCA Outputs • 3-Way System Protection Circuitry • Variable High/Low-Pass Filter

Massive Audio PX1900.4

Primo Series 4-Channel Amplifier (960W Total RMS)

PX1900.4 big DISCONTINUED
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Massive Audio PX1900.4

Primo Series 4-Channel Amplifier (960W Total RMS)

• RMS Power: 150W x 4 @ 4 Ohm / 240W x 4 @ 2 Ohm / 480W x 2 @ 4 Ohm Bridged
• Extreme Power in a Small Footprint
• 2 CH / 4 CH Input mode Switch
• Low Distortion Full Band Width for Sound Quality Tuning
• Mil Spec Double Sided PCB design with SMD parts

• RMS Power: 150W x 4 @ 4 Ohm / 240W x 4 @ 2 Ohm / 480W x 2 @ 4 Ohm Bridged
• Extreme Power in a Small Footprint
• 2 CH / 4 CH Input mode Switch
• Low Distortion Full Band Width for Sound Quality Tuning
• Mil Spec Double Sided PCB design with SMD parts

Audiobahn DUB5004 DUB Series ( MAG AUDIO )

DUB5004 big DISCONTINUED
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Audiobahn DUB5004 DUB Series ( MAG AUDIO )

4-channel A/B power amplifier • 105W x 4 RMS @ 2 Ohm • Bass remote included • Built in Hi/Low crossover • Subsonic filter • Voltage display • 3-Way protection circuitry

4-channel A/B power amplifier • 105W x 4 RMS @ 2 Ohm • Bass remote included • Built in Hi/Low crossover • Subsonic filter • Voltage display • 3-Way protection circuitry

Visonik V418XT

1000 watts, 4-Channel Amplifier

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Visonik V418XT

1000 watts, 4-Channel Amplifier

1000W 4-Channel Amplifier • 125W x 4 chan. @ 4 Ohm • 250W x 4 chan. @ 2 Ohm • full MOSFET circuitry • line inputs/outputs • adjustable input sensitivity • power/protection LED • S/N ratio: 90dB

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1000W 4-Channel Amplifier • 125W x 4 chan. @ 4 Ohm • 250W x 4 chan. @ 2 Ohm • full MOSFET circuitry • line inputs/outputs • adjustable input sensitivity • power/protection LED • S/N ratio: 90dB

Planet Audio BB4.150

1200W Max Big Bang Series 4-Channel Digital Audiophile Power Amplifier

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Planet Audio BB4.150

1200W Max Big Bang Series 4-Channel Digital Audiophile Power Amplifier

Big Bang Series 4-Channel Digital Car Amplifier • 1200W Max • 300W x 4-Chan @ 2 Ohm • Strap Two Amps Together for Twice the Power • 3-Way Protection • Variable Bass Boost (0 to +12 dB) &bull

Big Bang Series 4-Channel Digital Car Amplifier • 1200W Max • 300W x 4-Chan @ 2 Ohm • Strap Two Amps Together for Twice the Power • 3-Way Protection • Variable Bass Boost (0 to +12 dB) &bull

Alpine PDX-4.150

4-Channel Power Density Digital Amplifier (PDX4.150)

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Alpine PDX-4.150

4-Channel Power Density Digital Amplifier (PDX4.150)

4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

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4-Channel Power Density Digital Amplifier • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

Diamond Audio D7056 ( D7 056 )

D7 Series 6-Channel Amplifier

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Diamond Audio D7056 ( D7 056 )

D7 Series 6-Channel Amplifier

D7 Series 6-Channel Amplifier • 50W x 6 chan. @ 4 Ohm • 100W x 6 chan. @ 2 Ohm • fully regulated power supply • third-order Butterworth crossover • gold plated copper circuit board • forced-air cooling system

D7 Series 6-Channel Amplifier • 50W x 6 chan. @ 4 Ohm • 100W x 6 chan. @ 2 Ohm • fully regulated power supply • third-order Butterworth crossover • gold plated copper circuit board • forced-air cooling system

Hitron HA-1000.4 (GRAY)

1000W Max, 4-Channel Amplifier

HA-1000.4-GRAY big DISCONTINUED
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Hitron HA-1000.4 (GRAY)

1000W Max, 4-Channel Amplifier

HA Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 200W x 4 chan. @ 2 ohm • 500W x 2 chan. Max • 4/3/2 Channel operation • Short circuit, thermal, and overload protection

HA Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 200W x 4 chan. @ 2 ohm • 500W x 2 chan. Max • 4/3/2 Channel operation • Short circuit, thermal, and overload protection

Beyma SP-1504

Street Power Series 4-Channel Amplifier ( SP1504 )

SP-1504 big DISCONTINUED
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Beyma SP-1504

Street Power Series 4-Channel Amplifier ( SP1504 )

Street Power Series 2-Channel Amplifier • 120 watts x 4 chan. @ 2 ohm • High Pass and Low Pass Crossover • Bridged RMS: 240 watts x 2 @ 4 ohm • MOSFET Power Supply • Signal to Noise Ratio: 100 dB • Gold Plated power and speakers terminals

Street Power Series 2-Channel Amplifier • 120 watts x 4 chan. @ 2 ohm • High Pass and Low Pass Crossover • Bridged RMS: 240 watts x 2 @ 4 ohm • MOSFET Power Supply • Signal to Noise Ratio: 100 dB • Gold Plated power and speakers terminals

MTX Thunder Elite 1004 (TE1004)

1900W Max, 4-Channel Thunder Elite Amplifier

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MTX Thunder Elite 1004 (TE1004)

1900W Max, 4-Channel Thunder Elite Amplifier

Thunder Elite Series 4-Channel Class AB Car Amplifier • 125W x 4 chan. @ 4 ohm • 225W x 4 chan. @ 2 ohm • 1900W Max • Semi Unregulated MOSFET • 4/3/2/1 channel operation • Overload and thermal protection

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Thunder Elite Series 4-Channel Class AB Car Amplifier • 125W x 4 chan. @ 4 ohm • 225W x 4 chan. @ 2 ohm • 1900W Max • Semi Unregulated MOSFET • 4/3/2/1 channel operation • Overload and thermal protection

Kicker ZX200.4

06ZX200.4 ZX Series 4-Channel Amplifier

ZX200.4 big DISCONTINUED
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Kicker ZX200.4

06ZX200.4 ZX Series 4-Channel Amplifier

4-Channel ZX-Series Power Amplifier • 50W RMS x 4 @ 2 • KickBass • 4-Way Protection • Aluminum EndKaps • Adjustable Input Gain • High and Low Level Inputs

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4-Channel ZX-Series Power Amplifier • 50W RMS x 4 @ 2 • KickBass • 4-Way Protection • Aluminum EndKaps • Adjustable Input Gain • High and Low Level Inputs

Boss CX650

1000W Max 4-Channel Chaos Exxtreme Series Amplifier

6-Year Manufacturer's Extended Warranty When Bought Here!

CX650 big DISCONTINUED
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Boss CX650

1000W Max 4-Channel Chaos Exxtreme Series Amplifier

Chaos Exxtreme Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 250W x 4 chan. Max • Pulse width modulated (PWM) MOSFET power supply • Bridgeable operation • Speaker-level inputs

Promo Savings Icon

6-Year Manufacturer's Extended Warranty When Bought Here!

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Chaos Exxtreme Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 250W x 4 chan. Max • Pulse width modulated (PWM) MOSFET power supply • Bridgeable operation • Speaker-level inputs

Power Acoustik D4-1800B

1800W Max, 4 Channel Class A/B Demon Series Car Amplifier

D4-1800B big DISCONTINUED
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Power Acoustik D4-1800B

1800W Max, 4 Channel Class A/B Demon Series Car Amplifier

4 Channel Demon Series Car Amplifier • 4 ohm: 150 watts x 4 chan. • 2 ohm: 190 watts x 4 chan. • • Bridged, 4 ohm: 380 watts x 2 chan.

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4 Channel Demon Series Car Amplifier • 4 ohm: 150 watts x 4 chan. • 2 ohm: 190 watts x 4 chan. • • Bridged, 4 ohm: 380 watts x 2 chan.

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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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    2007 Suzuki DL650 V-Strom

    2014 Suzuki SFV650

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    2017 Can-Am Commander 800R

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    Why Use a Vehicle Fit Guide?
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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