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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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You are currently viewing discontinued products.

Pioneer GM-D9500F

800W Max Class FD 4-Channel Amplifier (Full-Range Class D)

GM-D9500F big DISCONTINUED
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Pioneer GM-D9500F

800W Max Class FD 4-Channel Amplifier (Full-Range Class D)

FD Series Class D 4-Channel Car Amplifier • 75W x 4 Chan. @ 4 Ohm • 100W x 4 Chan. @ 2 Ohm • 800W Max • 4/3/2 Channel Operation • Speaker-Level Inputs • Compression-Type Terminals • LPF • HPF

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FD Series Class D 4-Channel Car Amplifier • 75W x 4 Chan. @ 4 Ohm • 100W x 4 Chan. @ 2 Ohm • 800W Max • 4/3/2 Channel Operation • Speaker-Level Inputs • Compression-Type Terminals • LPF • HPF

Boss GT980

1200W Max, RiOT GT Series 5-Channel Amplifier (GT-980)

GT980 big DISCONTINUED
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Boss GT980

1200W Max, RiOT GT Series 5-Channel Amplifier (GT-980)

1200W Riot GT Series 5-Channel Amplifier • 80W x 4 chan. + 150W x 1 chan. • trimode operation • power and protection LEDs • MOSFET power supply • input gain control

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1200W Riot GT Series 5-Channel Amplifier • 80W x 4 chan. + 150W x 1 chan. • trimode operation • power and protection LEDs • MOSFET power supply • input gain control

Boss CXX354

200W 4-Channel Class AB Chaos EXXtreme Series Stereo Bridgeable Car Amplifier

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

CXX354 big DISCONTINUED
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Boss CXX354

200W 4-Channel Class AB Chaos EXXtreme Series Stereo Bridgeable Car Amplifier

• 50W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Heavy Duty Aluminum Heat Sink

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

• 50W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Heavy Duty Aluminum Heat Sink

Kole Audio QX4-960

960W Max, 4-Channel Amplifier

QX4-960 big DISCONTINUED
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Kole Audio QX4-960

960W Max, 4-Channel Amplifier

QX-Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 125W x 4 chan. @ 2 ohm • 250W x 2 chan. @ 4 ohm • 480W x 2 chan. Max • Pulse width modulated MOSFET power supply • Trimode capable • Preamp RCA outputs

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QX-Series 4-Channel Class AB Car Amplifier • 100W x 4 chan. @ 4 ohm • 125W x 4 chan. @ 2 ohm • 250W x 2 chan. @ 4 ohm • 480W x 2 chan. Max • Pulse width modulated MOSFET power supply • Trimode capable • Preamp RCA outputs

Power Acoustik CPT4-800

800W CRYPT Series 4-Channel Amplifier

CPT4-800 big DISCONTINUED
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Power Acoustik CPT4-800

800W CRYPT Series 4-Channel Amplifier

• 80W x 4-Chan @ 4 ohm
• 100W x 4-Chan @ 2 ohm
• MOSFET PSU Transistors
• LED Indicators
• Selectable Bass Boost
• Aluminum Alloy Heatsink
• 3-Way System Protection Circuitry

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• 80W x 4-Chan @ 4 ohm
• 100W x 4-Chan @ 2 ohm
• MOSFET PSU Transistors
• LED Indicators
• Selectable Bass Boost
• Aluminum Alloy Heatsink
• 3-Way System Protection Circuitry

Cadence XaH125.4 (Orange)

1000W, Xenith Series Class A/B 4-Channel Amplifier with Orange Chassis

XAH125.4 big DISCONTINUED
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Cadence XaH125.4 (Orange)

1000W, Xenith Series Class A/B 4-Channel Amplifier with Orange Chassis

Xenith Series 4-Channel Class A/B Car Amplifier with Orange Chassis • 80W RMS x 4 Chan. @ 4 ohm • 125W RMS x 4 Chan. @ 2 ohm • 250W RMS x 2 Chan. @ 4 ohm Bridged • MOSFET Power Supply • 4-Way System Protection Circuitry • Variable High/Low-Pass Crossovers • Variable Bass Boost

Xenith Series 4-Channel Class A/B Car Amplifier with Orange Chassis • 80W RMS x 4 Chan. @ 4 ohm • 125W RMS x 4 Chan. @ 2 ohm • 250W RMS x 2 Chan. @ 4 ohm Bridged • MOSFET Power Supply • 4-Way System Protection Circuitry • Variable High/Low-Pass Crossovers • Variable Bass Boost

Boss BL1600

1600W, Blade Series 4-Channel Amplifier (BL-1600)

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Boss BL1600

1600W, Blade Series 4-Channel Amplifier (BL-1600)

1600 watts Max, 4-Channel Amplifier • 180 watts x 4 chan. @ 4 ohm • MOSFET Power Supply • Tri-mode Operation • High Pass and Low Pass Crossover • Line and Speaker Level Inputs • Remote Subwoofer Level Control

1600 watts Max, 4-Channel Amplifier • 180 watts x 4 chan. @ 4 ohm • MOSFET Power Supply • Tri-mode Operation • High Pass and Low Pass Crossover • Line and Speaker Level Inputs • Remote Subwoofer Level Control

Soundstream PCX4.360 R/B

360W RMS, 4-Channel Picasso Series Amplifier

PCX4.360-RB big DISCONTINUED
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Soundstream PCX4.360 R/B

360W RMS, 4-Channel Picasso Series Amplifier

Picasso Series 4-Channel Class AB Car Amplifier • 60W x 4 Chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • 360 Watts Total • Bi-linear Selectable • Tuned Bass EQ • Platinum-Plated Contacts • End Caps Included

Picasso Series 4-Channel Class AB Car Amplifier • 60W x 4 Chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • 360 Watts Total • Bi-linear Selectable • Tuned Bass EQ • Platinum-Plated Contacts • End Caps Included

MTX Audio Terminator TN400/4

600W 4-Channel Terminator Series Amplifier

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MTX Audio Terminator TN400/4

600W 4-Channel Terminator Series Amplifier

• 45W x 4-Chan. @ 4 ohm
• 75W x 4-Chan. @ 2 ohm
• 150W x 2 chan. @ 4 ohm
• 150W x 4-Chan. Max
• Selectable bass boost
• Smart engage auto turn-on circuitry
• Built-in adaptive cooling fans

6

• 45W x 4-Chan. @ 4 ohm
• 75W x 4-Chan. @ 2 ohm
• 150W x 2 chan. @ 4 ohm
• 150W x 4-Chan. Max
• Selectable bass boost
• Smart engage auto turn-on circuitry
• Built-in adaptive cooling fans

Precision Power PPI S580.4

580W Sedona Series 4-Channel Amplifier

S580.4 big DISCONTINUED
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Precision Power PPI S580.4

580W Sedona Series 4-Channel Amplifier

• 100W x 4-Chan. @ 4 Ohm
• 145W x 4-Chan. @ 2 Ohm
• MOSFET Power Supply
• Variable Bass Boost
• Brushed Aluminum Finish
• Platinum 4 AWG Power Block
• Tri Mode Capable

3

• 100W x 4-Chan. @ 4 Ohm
• 145W x 4-Chan. @ 2 Ohm
• MOSFET Power Supply
• Variable Bass Boost
• Brushed Aluminum Finish
• Platinum 4 AWG Power Block
• Tri Mode Capable

Alpine 600W Amplifier + (4) MTX Terminator 5.25" Speakers + Belva Amp Kit

Alpine BBXF1200 4 Channel Amplifier + (4) MTX Terminator Component Speakers + Bak42bk (Black)

(2) TERMINATOR52,BAK42BK,BBX-F1200 big DISCONTINUED
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Alpine 600W Amplifier + (4) MTX Terminator 5.25" Speakers + Belva Amp Kit

Alpine BBXF1200 4 Channel Amplifier + (4) MTX Terminator Component Speakers + Bak42bk (Black)

• 50 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
• 130 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 600 Watts
• High and Low Pass Filters
• 0-12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 9.4" W x 12.9" L x 2" H

78

• 50 Watts RMS x 4 @ 4 ohm
• 70 Watts RMS x 4 @ 2 ohm
• 130 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 600 Watts
• High and Low Pass Filters
• 0-12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 9.4" W x 12.9" L x 2" H

Soundstream STL4.320

320W RMS, Stealth Series Stackable 4-Channel Amplifier

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Soundstream STL4.320

320W RMS, Stealth Series Stackable 4-Channel Amplifier

Stealth Series 4-Channel Class A/B Car Amplifier • 80W x 4 Chan. @ 2 Ohm • 50W x 4 Chan. @ 4 Ohm • Double Side PCB And SMD Components • Remote Bass Level Input • Active X-Over • 3-Way System Protection Circuitry

Stealth Series 4-Channel Class A/B Car Amplifier • 80W x 4 Chan. @ 2 Ohm • 50W x 4 Chan. @ 4 Ohm • Double Side PCB And SMD Components • Remote Bass Level Input • Active X-Over • 3-Way System Protection Circuitry

SoundStorm (SSL) EVO2000.4

2000W EVOLUTION Series 4 Channel Class A/B Amplifier

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SoundStorm (SSL) EVO2000.4

2000W EVOLUTION Series 4 Channel Class A/B Amplifier

• 250W x 4 Chan. @ 4 Ohm
• 500W x 2 Chan. @ 2 Ohm
• 1000 x 2 Chan. Bridged @ 4 Ohm
• Peak Power: 2000W
• Soft Turn-On Circuit
• Nickel-Plated Terminals
• Variable Bass EQ

2

• 250W x 4 Chan. @ 4 Ohm
• 500W x 2 Chan. @ 2 Ohm
• 1000 x 2 Chan. Bridged @ 4 Ohm
• Peak Power: 2000W
• Soft Turn-On Circuit
• Nickel-Plated Terminals
• Variable Bass EQ

MTX Audio XThunder 704X

420W RMS, 4-Channel Amplifier X Thunder 704 X

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MTX Audio XThunder 704X

420W RMS, 4-Channel Amplifier X Thunder 704 X

X Thunder Series 4-Channel Class AB Car Amplifier • 70W x 4 chan. @ 4 ohm • 105W x 4 chan. @ 2 ohm • Stereo gain control • Heavy duty aluminum construction with large heat-sinks

6

X Thunder Series 4-Channel Class AB Car Amplifier • 70W x 4 chan. @ 4 ohm • 105W x 4 chan. @ 2 ohm • Stereo gain control • Heavy duty aluminum construction with large heat-sinks

Power Acoustik STAX 2300/4 (STAX2300/4)

2300W Max, 4-Channel Class A/B STAX Series Amplifier

STAX2300/4 big DISCONTINUED
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Power Acoustik STAX 2300/4 (STAX2300/4)

2300W Max, 4-Channel Class A/B STAX Series Amplifier

STAX 4-Channel Class A/B Car Amplifier • 200 Watts x 4 Chan. @ 4 Ohm • 250 Watts x 4 Chan. @ 2 Ohm • 2300 Watts Max • 3-Way System Protection Circuitry • MOSFET Power Supply • LED Power And Protect Indicators •

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STAX 4-Channel Class A/B Car Amplifier • 200 Watts x 4 Chan. @ 4 Ohm • 250 Watts x 4 Chan. @ 2 Ohm • 2300 Watts Max • 3-Way System Protection Circuitry • MOSFET Power Supply • LED Power And Protect Indicators •

Pioneer GM-A6604 Like New, Demo Product

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 Like New, Demo Product

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

Like new Damaged Package
• 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

Like new Damaged Package
• 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

Hifonics PLUTO A6400 R/B

680W RMS Andromeda Series 4-Channel Amplifier

PLUTOA6400-RB big DISCONTINUED
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Hifonics PLUTO A6400 R/B

680W RMS Andromeda Series 4-Channel Amplifier

Pluto Series 4-Channel Car Amplifier • 85 watts x 4 chan @ 4 ohm • 170 watts x 4 chan @ 2 ohm • MOSFET Power Supply • LED Power Indicators • Bass Boost/EQ

Pluto Series 4-Channel Car Amplifier • 85 watts x 4 chan @ 4 ohm • 170 watts x 4 chan @ 2 ohm • MOSFET Power Supply • LED Power Indicators • Bass Boost/EQ

MB Quart FX4.100

800W RMS, 4-Channel Formula Series Amplifier

FX4.100 big DISCONTINUED
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MB Quart FX4.100

800W RMS, 4-Channel Formula Series Amplifier

Formula Series 4-Channel Class A/B Car Amplifier • 100W at 4 Ohm • 200W at 2 Ohm • PWM MOSFET Power Supply • Variable High Pass Filter • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

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Formula Series 4-Channel Class A/B Car Amplifier • 100W at 4 Ohm • 200W at 2 Ohm • PWM MOSFET Power Supply • Variable High Pass Filter • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

Audiobahn A4401T

560W Max, Class A/B 4-Channel Amplifier

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Audiobahn A4401T

560W Max, Class A/B 4-Channel Amplifier

4-Channel Class A/B Amplifier with Cobalt Blue Illumination and chrome finish • 560W Max Power Output • 280W RMS @ 2 ohm • 200W RMS @ 4 ohm • Digital LCD Voltmeter Display • Cooling Fan • Preamp Outputs

1

4-Channel Class A/B Amplifier with Cobalt Blue Illumination and chrome finish • 560W Max Power Output • 280W RMS @ 2 ohm • 200W RMS @ 4 ohm • Digital LCD Voltmeter Display • Cooling Fan • Preamp Outputs

Kicker ZX650.4 (11ZX650.4)

650W 4-Channel ZX Series Car Amplifier

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Kicker ZX650.4 (11ZX650.4)

650W 4-Channel ZX Series Car Amplifier

• 120W x 4-Chan. @ 4 ohm
• 160W x 4-Chan. @ 2 ohm
• 320W x 2 chan. @ 4 ohm
• 650W Total RMS
• Balanced differential inputs

9

• 120W x 4-Chan. @ 4 ohm
• 160W x 4-Chan. @ 2 ohm
• 320W x 2 chan. @ 4 ohm
• 650W Total RMS
• Balanced differential inputs

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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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