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Discontinued 4-Channel Amplifiers

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Planet Audio TRQ4.2400

2400W 4-Channel Torque Series Class AB Amplifier

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2400W 4-Channel Torque Series Class AB Amplifier

• RMS Power: 300W x 4 @ 4 ohm, 420W x 4 @ 2 ohm
• Total Peak Power: 2400W
• Variable High and Low Pass Filters
• Dimensions: 9.5" W x 15.56" L x 2.125" H

• RMS Power: 300W x 4 @ 4 ohm, 420W x 4 @ 2 ohm
• Total Peak Power: 2400W
• Variable High and Low Pass Filters
• Dimensions: 9.5" W x 15.56" L x 2.125" H

Power Acoustik STAX 1200/4 (STAX1200/4)

1200W Max, 4-Channel Class A/B STAX Series Amplifier

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1200W Max, 4-Channel Class A/B STAX Series Amplifier

STAX 4-Channel Class A/B Car Amplifier • 100 Watts x 4 Chan. @ 4 Ohm • 125 Watts x 4 Chan. @ 2 Ohm • 1200 Watts Max • 3-Way System Protection Circuitry • MOSFET Power Supply • LED Power And Protect Indicators •

STAX 4-Channel Class A/B Car Amplifier • 100 Watts x 4 Chan. @ 4 Ohm • 125 Watts x 4 Chan. @ 2 Ohm • 1200 Watts Max • 3-Way System Protection Circuitry • MOSFET Power Supply • LED Power And Protect Indicators •

MB Quart DA1-1000.4

1000W 4-Channel Discus Series Full Range Car Amplifier

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1000W 4-Channel Discus Series Full Range Car Amplifier

• RMS: 125W x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged: 500W x 2 @ 4 ohm
• Variable Low-Pass & High-Pass Filters
• Bass Boost: 0 ~ 12 dB
• Focused mass aluminum heat sinks
• 9.00" W x 15.4" L x 2.20" H

• RMS: 125W x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged: 500W x 2 @ 4 ohm
• Variable Low-Pass & High-Pass Filters
• Bass Boost: 0 ~ 12 dB
• Focused mass aluminum heat sinks
• 9.00" W x 15.4" L x 2.20" H

Boss CH4500

2000W 4-Channel Chaos Series Class AB Full Range Amplifier

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2000W 4-Channel Chaos Series Class AB Full Range Amplifier

• RMS: 250W x 4 @ 4 ohm
• Total Peak Power: 2000W
• Nickel-plated RCA low level inputs
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Wired remote bass level control included
• 11.00" W x 15.90" L x 2.87" H

• RMS: 250W x 4 @ 4 ohm
• Total Peak Power: 2000W
• Nickel-plated RCA low level inputs
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Wired remote bass level control included
• 11.00" W x 15.90" L x 2.87" H

Precision Power PPI DCX 1000.4

4-Channel Car Amplifier

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4-Channel Car Amplifier

Class-AB 4-Channel Amplifier • 125W RMS x 4 @ 4 • 500W RMS x 2 @ 4 Bridged • QBASS PLUS Bass Boost • RCA Output • Phase Control • Adjustable Input Gain • Independant Output Crossover • PowerLOCK Connectors

Class-AB 4-Channel Amplifier • 125W RMS x 4 @ 4 • 500W RMS x 2 @ 4 Bridged • QBASS PLUS Bass Boost • RCA Output • Phase Control • Adjustable Input Gain • Independant Output Crossover • PowerLOCK Connectors

Autotek Mean Machine M1000.4

1000W Mean Machine Series 4-Channel Car Audio Amplifier

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1000W Mean Machine Series 4-Channel Car Audio Amplifier

• 1000W Max
• 250 Watts x 4-Chan. @ 2 Ohm
• 4-Way System Protection
• Selectable Highpass/Lowpass Filters

• 1000W Max
• 250 Watts x 4-Chan. @ 2 Ohm
• 4-Way System Protection
• Selectable Highpass/Lowpass Filters

Power Acoustik PS4-600

600W Max, Power Series 4-Channel Amplifier

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600W Max, Power Series 4-Channel Amplifier

Power Acoustik Power Series 4-Channel Amp • 70W x 4-Chan. @ 4 Ohm • 85W x 4-Chan. @ 2 Ohm • PWM MOSFET Power Supply • Variable Bass Boost • Tri-Guard Amp Protection • System Distress Indicator

Power Acoustik Power Series 4-Channel Amp • 70W x 4-Chan. @ 4 Ohm • 85W x 4-Chan. @ 2 Ohm • PWM MOSFET Power Supply • Variable Bass Boost • Tri-Guard Amp Protection • System Distress Indicator

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5 Channel Class AB/ Class D Hybrid Amplifier • RMS Power Rating: 115 watts x 4 chan. + 100 watts x 1 chan. • Gold Plated RCA Connectors • Compact Aluminum Chassis with Custom Black Pearl Finish • Wired Gain Remote for Subwoofer Channel

5 Channel Class AB/ Class D Hybrid Amplifier • RMS Power Rating: 115 watts x 4 chan. + 100 watts x 1 chan. • Gold Plated RCA Connectors • Compact Aluminum Chassis with Custom Black Pearl Finish • Wired Gain Remote for Subwoofer Channel

Crunch CR600.4RB

Refurbished 600W Max, Power One Series 4-Channel Amplifier

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Refurbished 600W Max, Power One Series 4-Channel Amplifier

Power One Series Car Amplifier • 4-Channel • Class AB • 300W x 2 Chan. Max • 150W x 2 Chan. @ 2 ohm • 75W x 4 Chan. @ 4 ohm • Tuned Bass EQ • Speaker-Level Inputs • Crossover Switch • LPF • HPF

Power One Series Car Amplifier • 4-Channel • Class AB • 300W x 2 Chan. Max • 150W x 2 Chan. @ 2 ohm • 75W x 4 Chan. @ 4 ohm • Tuned Bass EQ • Speaker-Level Inputs • Crossover Switch • LPF • HPF

Precision Power PPI DCX 800.5

Class-AB 5-Channel Competition Car Amplifier

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Class-AB 5-Channel Competition Car Amplifier

Class-AB 5-Channel Amplifier • 75W RMS x 4 + 200W x 1 @ 4 • 300W RMS x 2 @ 4 Bridged • QBASS PLUS Bass Boost • RCA Output • Phase Control • Adjustable Input Gain • Independant Output Crossover • PowerLOCK Connectors

Class-AB 5-Channel Amplifier • 75W RMS x 4 + 200W x 1 @ 4 • 300W RMS x 2 @ 4 Bridged • QBASS PLUS Bass Boost • RCA Output • Phase Control • Adjustable Input Gain • Independant Output Crossover • PowerLOCK Connectors

Cadence ZRS C9

1200W 4-Channel ZRS Series Class A/B Full Range Competition Car Amplifier

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1200W 4-Channel ZRS Series Class A/B Full Range Competition Car Amplifier

• RMS: 100W x 4 @ 4 ohm, 150W x 4 @ 2 ohm• Bridged: 300W x 2 @ 4 ohm
• Total Peak Power: 1200W
• 16V Capable Power Supply
• Bipolar Japanese Sanken Outputs
• 11.6"W x 15"L x 2.7" H

• RMS: 100W x 4 @ 4 ohm, 150W x 4 @ 2 ohm• Bridged: 300W x 2 @ 4 ohm
• Total Peak Power: 1200W
• 16V Capable Power Supply
• Bipolar Japanese Sanken Outputs
• 11.6"W x 15"L x 2.7" H

MTX TD75.4

400W 4-Channel TD Series Class A/B Car Amplifier

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400W 4-Channel TD Series Class A/B Car Amplifier

• 4 ohm: 75 watts x 4-Chan.
• 2 ohm: 100 watts x 4-Chan.
• Bridged, 4 Ohm: 200 x 2 chan.
• 4/3/2 channel operation

• 4 ohm: 75 watts x 4-Chan.
• 2 ohm: 100 watts x 4-Chan.
• Bridged, 4 Ohm: 200 x 2 chan.
• 4/3/2 channel operation

Image Dynamics i4500

460W 4-Channel Class AB i Series Car Amplifier

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460W 4-Channel Class AB i Series Car Amplifier

• RMS: 75W x 4 @ 4 ohm, 115W x 4 @ 2 ohm
• 460W RMS
• Pulse Width Modulated MOSFET Power Supply
• LED Status Indicator
• Fully Adjustable Bass EQ
• 3-Way System Protection
• Low Level Line Inputs
• Aluminum Finned Heatsink

• RMS: 75W x 4 @ 4 ohm, 115W x 4 @ 2 ohm
• 460W RMS
• Pulse Width Modulated MOSFET Power Supply
• LED Status Indicator
• Fully Adjustable Bass EQ
• 3-Way System Protection
• Low Level Line Inputs
• Aluminum Finned Heatsink

Soundstream REF4.760

680W RMS, 4-Channel Reference Series Power Amplifier

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680W RMS, 4-Channel Reference Series Power Amplifier

Reference Series 4-Channel Car Amplifier • 110 Watts x 4 Chan @ 4 Ohm • 170 Watts x 4 Chan @ 2 Ohm • MOSFET Power Supply • Hawkins Bass Control • Harmonic Bass Alignment • Rail Stabilization Protection • Tri-Mode Operation

Reference Series 4-Channel Car Amplifier • 110 Watts x 4 Chan @ 4 Ohm • 170 Watts x 4 Chan @ 2 Ohm • MOSFET Power Supply • Hawkins Bass Control • Harmonic Bass Alignment • Rail Stabilization Protection • Tri-Mode Operation

Kenwood X450-4

450W 4-Channel eXcelon Series Full Range Power Car Amplifier

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450W 4-Channel eXcelon Series Full Range Power Car Amplifier

• 4 ohm: 60 watts x 2 chan. + 100 watts x 2 chan.
• 2 ohm: 75 watts x 2 chan. + 150 watts x 2 chan.
• Bridged, 4 ohm: 60 watts x 2 chan. + 300 watts x 1 chan.
• Pulse Width Modulated MOSFET Power Supply

• 4 ohm: 60 watts x 2 chan. + 100 watts x 2 chan.
• 2 ohm: 75 watts x 2 chan. + 150 watts x 2 chan.
• Bridged, 4 ohm: 60 watts x 2 chan. + 300 watts x 1 chan.
• Pulse Width Modulated MOSFET Power Supply

Power Acoustik STAX 1600/4 (STAX1600/4)

1600W Max, 4-Channel Class A/B STAX Series Amplifier

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1600W Max, 4-Channel Class A/B STAX Series Amplifier

STAX 4-Channel Class A/B Car Amplifier • 150 Watts x 4 Chan. @ 4 Ohm • 180 Watts x 4 Chan. @ 2 Ohm • 1600 Watts Max • 3-Way System Protection Circuitry • MOSFET Power Supply • LED Power And Protect Indicators •

STAX 4-Channel Class A/B Car Amplifier • 150 Watts x 4 Chan. @ 4 Ohm • 180 Watts x 4 Chan. @ 2 Ohm • 1600 Watts Max • 3-Way System Protection Circuitry • MOSFET Power Supply • LED Power And Protect Indicators •

SPL GRLA 1600/4 (GRLA1600/4)

1600W Max, Gorilla Series 4-Channel Amplifier

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1600W Max, Gorilla Series 4-Channel Amplifier

Gorilla Series Class A/B 4-Channel Car Amplifier • 150 Watts x 4 Chan. @ 4 Ohm • 80 Watts x 4 Chan. @ 2 Ohm • 360 Watts x 2 Chan. Bridged • 1600 Watts Max • Regulated MOSFET PMW Power Supply • Preamp RCA Outputs

Gorilla Series Class A/B 4-Channel Car Amplifier • 150 Watts x 4 Chan. @ 4 Ohm • 80 Watts x 4 Chan. @ 2 Ohm • 360 Watts x 2 Chan. Bridged • 1600 Watts Max • Regulated MOSFET PMW Power Supply • Preamp RCA Outputs

Massive Audio BX4 Open Box Complete

960W 4-Channel Class D BX Series High Performance Car Amplifier

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960W 4-Channel Class D BX Series High Performance Car Amplifier

• Open Box Complete
• 120W x 4-Chan. @ 4 ohm
• 240W x 4-Chan. @ 2 ohm
• 480W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Selectable LPF or HPF

• Open Box Complete
• 120W x 4-Chan. @ 4 ohm
• 240W x 4-Chan. @ 2 ohm
• 480W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Selectable LPF or HPF

Crunch PZX1800.4 - Open Box, Very Good Condition (Used)

1800W 4-Channel Powerzone Series Class AB Car Amplifier -

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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

• 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 X301-4 Like New, Demo Product

600W Max X-Series Bridgeable 4-channel Amplifier

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600W Max X-Series Bridgeable 4-channel Amplifier

Like new Damaged Package
• 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

Like new Damaged Package
• 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

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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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