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Discontinued 4-Channel Amplifiers

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Boston Acoustics GTA-504 R/B

Refurbished 320W RMS, GTA Series 4-Channel Car Amplifier

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Refurbished 320W RMS, GTA Series 4-Channel Car Amplifier

GTA Series 4-Channel Class AB Car Amplifier • 320W RMS • 50 Watts x 4 Chan. @ 4 Ohm • 80 Watts x 4 Chan. @ 2 Ohm • Q-Tune™ Bass Optimization Circuitry • SST™ (Symmetrical Signal Topology) • Wrap-Around Heatsink

GTA Series 4-Channel Class AB Car Amplifier • 320W RMS • 50 Watts x 4 Chan. @ 4 Ohm • 80 Watts x 4 Chan. @ 2 Ohm • Q-Tune™ Bass Optimization Circuitry • SST™ (Symmetrical Signal Topology) • Wrap-Around Heatsink

Hifonics ZRX600.4 (Factory Refurbished)

600W 4-Channel Class A/B Zeus Series Car Amplifier

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600W 4-Channel Class A/B Zeus Series Car Amplifier

• 4 ohm: 75 watts x 4-Chan.
• 2 ohm: 150 watts x 4-Chan.
• Bridged, 4 ohm: 300 watts x 2 chan.
• Pulse Width Modulated MOSFET power supply

• 4 ohm: 75 watts x 4-Chan.
• 2 ohm: 150 watts x 4-Chan.
• Bridged, 4 ohm: 300 watts x 2 chan.
• Pulse Width Modulated MOSFET power supply

Clarion APX490M R/B

720W Max, 4-Channel Marine Amplifier (APX-490M)

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720W Max, 4-Channel Marine Amplifier (APX-490M)

4-Channel Class AB Marine Amplifier • 90W x 2 chan. $ 4 ohm • 165W x 2 chan. @ 2 ohm • 720W x 1 chan. Max • Variable bass boost: 0-15dB at 45Hz • Mixed mode operation • Non-corrosive aluminum heat sink • Conformal coated PC Board

4-Channel Class AB Marine Amplifier • 90W x 2 chan. $ 4 ohm • 165W x 2 chan. @ 2 ohm • 720W x 1 chan. Max • Variable bass boost: 0-15dB at 45Hz • Mixed mode operation • Non-corrosive aluminum heat sink • Conformal coated PC Board

Sound Storm SSL F4.800 (Open Box)

Open Box: 800W Max, Force Series 4-Channel Amplifier w/ Bass Remote Level Control (SoundStorm F4800)

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Open Box: 800W Max, Force Series 4-Channel Amplifier w/ Bass Remote Level Control (SoundStorm F4800)

Force Series 4-Channel Class A/B Amplifier • 85 Watts x 4 Chan @ 4 Ohm • Line and Speaker-Level Inputs • 800 Watts Max • Chrome-Plated RCA Level Inputs And Screw Terminals • LED Power And Protect Indicators

Force Series 4-Channel Class A/B Amplifier • 85 Watts x 4 Chan @ 4 Ohm • Line and Speaker-Level Inputs • 800 Watts Max • Chrome-Plated RCA Level Inputs And Screw Terminals • LED Power And Protect Indicators

Phoenix Gold Ryval V754 R/B

(Factory Refurbished) 1000W Max, 4-Channel Amplifier (Rival)

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(Factory Refurbished) 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

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

Pioneer GM-D9500F Factory Refurbished

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

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(Factory Refurbished) 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

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

Power Acoustik OVN4-840 R/B

840W Max, 4-Channel Gothic Series Amplifier

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840W Max, 4-Channel Gothic Series Amplifier

Gothic Series 4-Channel Car Amplifier • 80W x 4 Chan. @ 4 Ohm • 95W x 4 Chan. @ 2 Ohm • Bridged 190W x 2 Chan. @ 4 Ohm • Pulse Width Modulation Circuitry • Tri-Mode Capable • LED Power Indicators • Level Inputs

Gothic Series 4-Channel Car Amplifier • 80W x 4 Chan. @ 4 Ohm • 95W x 4 Chan. @ 2 Ohm • Bridged 190W x 2 Chan. @ 4 Ohm • Pulse Width Modulation Circuitry • Tri-Mode Capable • LED Power Indicators • Level Inputs

Power Acoustik PS4-800 R/B

800W Max Power Series 4-Channel Amplifier

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800W Max Power Series 4-Channel Amplifier

Power Acoustik Power Series Amplifier • 85W x 4-Chan. @ 4 Ohm • 105W x 4-Chan. @ 2 Ohm • PWM MOSFET Power Supply • Variable Bass Boost • Tri-Guard Amp Protection • Gold Plated RCA • System Distress Indicator

Power Acoustik Power Series Amplifier • 85W x 4-Chan. @ 4 Ohm • 105W x 4-Chan. @ 2 Ohm • PWM MOSFET Power Supply • Variable Bass Boost • Tri-Guard Amp Protection • Gold Plated RCA • System Distress Indicator

Planet Audio BB4.150 R/B

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

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Refurbished 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 +18 dB)

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 +18 dB)

RE Audio DTX-750.4 (DTX750.4)- OPEN BOX

320W DTX Series Class AB 4-Channel Amplifier

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320W DTX Series Class AB 4-Channel Amplifier

• 60W x 4-Chan. @ 4 ohm
• 80W x 4-Chan. @ 2 ohm
• 4-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Variable Bass Boost (0-12 dB)

• 60W x 4-Chan. @ 4 ohm
• 80W x 4-Chan. @ 2 ohm
• 4-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Variable Bass Boost (0-12 dB)

MB Quart RA640.4 (Factory Refurbished)

640W 4-Channel Reference Series Bridgeable Power Amplifier (RA6404)

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640W 4-Channel Reference Series Bridgeable Power Amplifier (RA6404)

• Item Condition: Factory Refurbished
• 80W x 4-Chan. @ 4 ohm
• 160W x 4-Chan. @ 2 ohm
• 320W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

• Item Condition: Factory Refurbished
• 80W x 4-Chan. @ 4 ohm
• 160W x 4-Chan. @ 2 ohm
• 320W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

West Coast Customs WCC1600.4 by MB Quart OPEN BOX COMPLETE

1600W 4-Channel WCC Series Full Range Amplifier (Same as MB Quart OA800.4)

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1600W 4-Channel WCC Series Full Range Amplifier (Same as MB Quart OA800.4)

Box is damaged and item is used
• 100W x 4-Chan. @ 4 ohm
• 200W x 4-Chan. @ 2 ohm
• 400W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

Box is damaged and item is used
• 100W x 4-Chan. @ 4 ohm
• 200W x 4-Chan. @ 2 ohm
• 400W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

MTX Audio TC6004 R/B

(REFURBISHED) 1800W Max, 4-Channel Amplifier

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(REFURBISHED) 1800W Max, 4-Channel Amplifier

1800W Max, 4-Channel Amplifier • atented state of the art power supply and output stage • Adjustable HP/LP crossover - 40Hz - 350 Hz, 12 dB/oct for maximum system design flexibility • Fully adjustable bass boost - 40H, 0-18dB to enhance the low frequency experience in your vehicle

1800W Max, 4-Channel Amplifier • atented state of the art power supply and output stage • Adjustable HP/LP crossover - 40Hz - 350 Hz, 12 dB/oct for maximum system design flexibility • Fully adjustable bass boost - 40H, 0-18dB to enhance the low frequency experience in your vehicle

Planet Audio AC1600.4 (OPEN BOX INCOMPLETE)

1600W Anarchy Series 4-Channel Class AB MOSFET Power Amplifier with Remote Level Control

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1600W Anarchy Series 4-Channel Class AB MOSFET Power Amplifier with Remote Level Control

• RMS: 300W x 4 @ 2 ohm
• 1600W Max.
• Switchable Phase Shift
• Input Sensitivity Selector
• Remote Subwoofer Control
• Heavy-Duty Screw Terminals
• Chrome-Plated Connections
• Illuminated Logo

• RMS: 300W x 4 @ 2 ohm
• 1600W Max.
• Switchable Phase Shift
• Input Sensitivity Selector
• Remote Subwoofer Control
• Heavy-Duty Screw Terminals
• Chrome-Plated Connections
• Illuminated Logo

Crunch PZT900.4

900W Max, Power Zone Series 4-Channel Amplifier (PZT-900.4)

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900W Max, Power Zone Series 4-Channel Amplifier (PZT-900.4)

4-Channel Power Zone Series Car Amplifier • Class A/B • 115W x 4 Chan. @ 4 ohm • 225W x 4 Chan. @ 2 ohm • 900 Watts Max • Crossover Switch • Soft-Start Circuitry • Nickel-Plated Contacts • Illuminated Crunch Logo

4-Channel Power Zone Series Car Amplifier • Class A/B • 115W x 4 Chan. @ 4 ohm • 225W x 4 Chan. @ 2 ohm • 900 Watts Max • Crossover Switch • Soft-Start Circuitry • Nickel-Plated Contacts • Illuminated Crunch Logo

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4 Channel A/B Amplifier • 75W RMS x 4 @ 4 • Line Output • Hour Meter • Clear Acrylic Protective Cover • Adjustable Input Sensitivity, Phase, Bass Boost, Crossovers • Remote Mount Digital Voltemter Included

4 Channel A/B Amplifier • 75W RMS x 4 @ 4 • Line Output • Hour Meter • Clear Acrylic Protective Cover • Adjustable Input Sensitivity, Phase, Bass Boost, Crossovers • Remote Mount Digital Voltemter Included

Rockford Fosgate Punch P450.4 R/B

450 watts, Punch Series 4-Channel Amplifier

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450 watts, Punch Series 4-Channel Amplifier

450 watts, Punch Series 4-Channel Amplifier • 60W x 4 chan. @ 4 Ohm • 110W x 4 chan. @ 2 Ohm • mass heatsink design • specially designed MOSFETs • preamp inputs and outputs • CEA-2006 compliant

450 watts, Punch Series 4-Channel Amplifier • 60W x 4 chan. @ 4 Ohm • 110W x 4 chan. @ 2 Ohm • mass heatsink design • specially designed MOSFETs • preamp inputs and outputs • CEA-2006 compliant

Power Acoustik GT4-1200-OPEN BOX

1200W 4-Channel Gothic Series Car Amplifier

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1200W 4-Channel Gothic Series Car Amplifier

• 4 ohm: 100 watts x 4-Chan.
• 2 ohm: 125 watts x 4-Chan.
• Bridged, 4 ohm: 250 watts x 2 chan.
• Max power output: 1200 watts

• 4 ohm: 100 watts x 4-Chan.
• 2 ohm: 125 watts x 4-Chan.
• Bridged, 4 ohm: 250 watts x 2 chan.
• Max power output: 1200 watts

JBL CS50.4 Factory R/B

268W RMS, Grand Touring Series 4-Channel Amplifier

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268W RMS, Grand Touring Series 4-Channel Amplifier

• • • • • Description Coming Soon! • • • • •

• • • • • Description Coming Soon! • • • • •

JL Audio A4300 R/B

440W RMS, 4-Channel Class A/B A Series Amplifier

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440W RMS, 4-Channel Class A/B A Series Amplifier

A Series 4-Channel Class AB Car Amplifier • 110W RMS x 4 chan. at 2 ohm • Absolute Symmetry™ Class A/B Circuit • Pass-through type Preamp Output

A Series 4-Channel Class AB Car Amplifier • 110W RMS x 4 chan. at 2 ohm • Absolute Symmetry™ Class A/B Circuit • Pass-through type Preamp Output

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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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