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Boston Acoustics GT-4100 Open Box

(Open Box) 900W RMS, GT Series 4-Channel Amplifier

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(Open Box) 900W RMS, GT Series 4-Channel Amplifier

GT Series 4-Channel Reference Amplifier • 100W x 4 Chan. @ 4 Ohm • 150W x 4 Chan. @ 2 Ohm • Fully Computer-Controlled Diagnostics System • Q-Tune™ Technology • Fan Cooled Aluminum Alloy Heatsink

GT Series 4-Channel Reference Amplifier • 100W x 4 Chan. @ 4 Ohm • 150W x 4 Chan. @ 2 Ohm • Fully Computer-Controlled Diagnostics System • Q-Tune™ Technology • Fan Cooled Aluminum Alloy Heatsink

VIBE Audio LiteBox Stereo 4 (LiteBox4) Open Box

(Open Box) 1000W Max, SuperCar Series 4-Channel Hybrid Amplifier (Lite Box 4)

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(Open Box) 1000W Max, SuperCar Series 4-Channel Hybrid Amplifier (Lite Box 4)

SuperCar Series 4-Channel Class GH Car Amplifier • 90W x 4 Chan. @ 4 ohm • 125W x 4 Chan. @ 2 ohm • 1000W Max • MOSFET Power supply • Bass Boost EQ • Internal Convection Cooling • Aluminum Alloy Heatsink

SuperCar Series 4-Channel Class GH Car Amplifier • 90W x 4 Chan. @ 4 ohm • 125W x 4 Chan. @ 2 ohm • 1000W Max • MOSFET Power supply • Bass Boost EQ • Internal Convection Cooling • Aluminum Alloy Heatsink

MTX Audio JackHammer JH404 (Refurbished)

800W Max, 4-Channel Jack Hammer Series Amplifier (Refurbished)

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800W Max, 4-Channel Jack Hammer Series Amplifier (Refurbished)

JackHammer Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 100W x 4 chan. @ 2 ohm • 200W x 2 chan. @ 4 ohm • 200W x 4 chan. Max • Patented Pure N-Channel technology • Smart Engage circuitry • Stackable configuration • Built-in active fan cooling

JackHammer Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 100W x 4 chan. @ 2 ohm • 200W x 2 chan. @ 4 ohm • 200W x 4 chan. Max • Patented Pure N-Channel technology • Smart Engage circuitry • Stackable configuration • Built-in active fan cooling

Pioneer Premier PRS-D4200F Open Box

(Open Box) 1200W Max, 4-Channel Premier PRS Series Full-Range Class D with ICEpower Technology Amplifier

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(Open Box) 1200W Max, 4-Channel Premier PRS Series Full-Range Class D with ICEpower Technology Amplifier

Premier PRS Series 4-Channel Full-Range Class D Car Amplifier • 75W x 4 chan. @ 4 ohm • 150W x 4 chan. @ 2 ohm • 300W x 2 chan. @ 4 ohm • 300W x 4 chan. Max • ICEpower gives the amplifier incredible efficiency

Premier PRS Series 4-Channel Full-Range Class D Car Amplifier • 75W x 4 chan. @ 4 ohm • 150W x 4 chan. @ 2 ohm • 300W x 2 chan. @ 4 ohm • 300W x 4 chan. Max • ICEpower gives the amplifier incredible efficiency

Cerwin-Vega H41200.4 OPEN BOX COMPLETE

1200W HED Series 4-Channel Class AB Amplifier

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1200W HED Series 4-Channel Class AB Amplifier

Installed and has Box Damage
• RMS Power: 80W x 4 @ 4 ohm , 110 watts x 4 @ 2 ohm
• Total Peak Power: 1200W
• Variable Low-Pass Filter
• Pulse Width Modulated MOSFET Power Supply
• Heavy-Grade Aluminum Alloy Extruded Heatsink

Installed and has Box Damage
• RMS Power: 80W x 4 @ 4 ohm , 110 watts x 4 @ 2 ohm
• Total Peak Power: 1200W
• Variable Low-Pass Filter
• Pulse Width Modulated MOSFET Power Supply
• Heavy-Grade Aluminum Alloy Extruded Heatsink

Alpine PDR-F50-open box

4-Channel 85W PDR Series Class D Car Amplifier

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4-Channel 85W PDR Series Class D Car Amplifier

• RMS Power: 85W x 4 @ 4 ohm, 125W x 2 @ 2 ohm, 250W x 2 @ 4 ohm, Bridged
• Preamp Outputs
• Dimensions: 9"W x 7.12"L x 2.8"H

• RMS Power: 85W x 4 @ 4 ohm, 125W x 2 @ 2 ohm, 250W x 2 @ 4 ohm, Bridged
• Preamp Outputs
• Dimensions: 9"W x 7.12"L x 2.8"H

JL Audio 450/4 R/B

FACTORY REFURBISHED AMP

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FACTORY REFURBISHED AMP

4-Channel Power Amplifier • (150W x 2 front chan.) + (75W x 2 rear chan.) • Bridged:(300W x 1 front chan.) + (150W x 1 rear chan.) • 108.5 dB S/N Ratio • 1.5 ohm - 8 ohm stable (1.5 - 4 ohm unbridged, 3 - 8 ohm when bridged)

4-Channel Power Amplifier • (150W x 2 front chan.) + (75W x 2 rear chan.) • Bridged:(300W x 1 front chan.) + (150W x 1 rear chan.) • 108.5 dB S/N Ratio • 1.5 ohm - 8 ohm stable (1.5 - 4 ohm unbridged, 3 - 8 ohm when bridged)

Focal AuditorAP4340 (Auditor AP4340)

Auditor Line Class-AB 4-Channel Amplifier (4 x 75w)

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Auditor Line Class-AB 4-Channel Amplifier (4 x 75w)

• Auditor Line Class-AB 4-Channel Amplifier
• Can be used in three modes
• 70 watts RMS x 4 at 4 ohm, 190 watts RMS x 2 at 4 ohm
• Bandwidth: 10Hz - 30kHz
• Frequency response: 10-30,000 Hz

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• Auditor Line Class-AB 4-Channel Amplifier
• Can be used in three modes
• 70 watts RMS x 4 at 4 ohm, 190 watts RMS x 2 at 4 ohm
• Bandwidth: 10Hz - 30kHz
• Frequency response: 10-30,000 Hz

Cadence TXA3004 (Factory Refurbished) - Open Box, Very Good Condition Used

4 Channel TXA Series 2-Ohm Stable Bridgeable Amplifier

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4 Channel TXA Series 2-Ohm Stable Bridgeable Amplifier

• 4 Ohm: 75W RMS x 4 ch.
• 2 Ohm: 150W RMS x 4 ch.
•600W RMS x 2 ch. Bridgeable
• 2 Ohm Stable
• Bass Boost Equalization
• Fully Adjustable Low Pass Crossover Filter
• Full IC-Controlled Protection Circuitry

• 4 Ohm: 75W RMS x 4 ch.
• 2 Ohm: 150W RMS x 4 ch.
•600W RMS x 2 ch. Bridgeable
• 2 Ohm Stable
• Bass Boost Equalization
• Fully Adjustable Low Pass Crossover Filter
• Full IC-Controlled Protection Circuitry

Memphis Belle 16-MCH600 R/B

(Factory Refurbished) MCH600 5-Channel MClass Series Amplifier

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(Factory Refurbished) MCH600 5-Channel MClass Series Amplifier

5-Channel Memphis Belle Hybrid Amplifier • 55W RMS x 4 + 100W x 1 @ 4 • 75W RMS x 4 + 200W x 1 @ 2 • 1 Ohm Stable Subwoofer Channel: 400W RMS x 1 • Adjustable Input Sensitivity • Compact Aluminum Chassis with Black Pearl Finish • Built-in Crossover • Full MOSFET Design

5-Channel Memphis Belle Hybrid Amplifier • 55W RMS x 4 + 100W x 1 @ 4 • 75W RMS x 4 + 200W x 1 @ 2 • 1 Ohm Stable Subwoofer Channel: 400W RMS x 1 • Adjustable Input Sensitivity • Compact Aluminum Chassis with Black Pearl Finish • Built-in Crossover • Full MOSFET Design

Alpine MRV-F545 R/B

4-Channel High Power Amplifier

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4-Channel High Power Amplifier

V12 4-Channel High Power Amplifier • 125W RMS x 4 @ 4 • 500W RMS x 1 Bridged (Chan 3/4) • Blue LCD Display • Amplifier Link • 1 Preamp Outputs • Bass Engine • Adjustable Crossover and Input Sensitivity

V12 4-Channel High Power Amplifier • 125W RMS x 4 @ 4 • 500W RMS x 1 Bridged (Chan 3/4) • Blue LCD Display • Amplifier Link • 1 Preamp Outputs • Bass Engine • Adjustable Crossover and Input Sensitivity

EXCLUSIVE

Sony + MB Quart 3-Channel Full Range Amplified Bundle

List price $729.97: Sony XS-GS1621C 6.5" 2-Way Component Speakers + Sony XS-GSW121 12" Car Subwoofer + MB Quart OA800.4 4-Channel Amplifier

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List price $729.97: Sony XS-GS1621C 6.5" 2-Way Component Speakers + Sony XS-GSW121 12" Car Subwoofer + MB Quart OA800.4 4-Channel Amplifier

• 100 Watts RMS x 4 @ 4 ohm
• 400 Watts RMS x 2 @ 4 ohm, Bridged
• 1" Synthetic Fabric Dome Tweeter
• Mounting Depth: 2-1/4"
• Mica Reinforced Cellular Fiber Cone and Rubber Surround
• Single 4 ohm Voice Coil
• Mica-Reinforced Cellular Glass Fiber Cone
• Butyl Rubber Surround
• Honeycomb Design
• 10 AWG Spring Loaded Push Terminals
• Sensitivity: 84 dB

• 100 Watts RMS x 4 @ 4 ohm
• 400 Watts RMS x 2 @ 4 ohm, Bridged
• 1" Synthetic Fabric Dome Tweeter
• Mounting Depth: 2-1/4"
• Mica Reinforced Cellular Fiber Cone and Rubber Surround
• Single 4 ohm Voice Coil
• Mica-Reinforced Cellular Glass Fiber Cone
• Butyl Rubber Surround
• Honeycomb Design
• 10 AWG Spring Loaded Push Terminals
• Sensitivity: 84 dB

Eclipse XA5000 R/B

5-Channel Class D ICEpower Technology Amplifier plus Subsonic Filter

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5-Channel Class D ICEpower Technology Amplifier plus Subsonic Filter

900 watts peak • 50W RMS x 4 chan. • 300W RMS x 1 chan. • High current, high efficiency FET power supply • "Easy Tune" top-mounted controls

900 watts peak • 50W RMS x 4 chan. • 300W RMS x 1 chan. • High current, high efficiency FET power supply • "Easy Tune" top-mounted controls

Alpine KTP-445U Power Pack

180W RMS Power Pack Series Compact Class D 4-Channel Car Amplifier

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180W RMS Power Pack Series Compact Class D 4-Channel Car Amplifier

• RMS Power: 45W x 4-Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

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• RMS Power: 45W x 4-Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

U.S. Amps XA-800.4 (Open Box)

760W Max, 4-Channel XA Series U.S Amps Car Amplifier (Open Box)

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760W Max, 4-Channel XA Series U.S Amps Car Amplifier (Open Box)

XA Series 4-Channel Car Amplifier • 60W RMS x 2 Chan. @ 4 Ohm • 85W RMS x 2 Chan. @ 2 Ohm • 160W RMS x 1 Chan. @ 4 Ohm Bridged • MOSFET Power Supply • Variable Bass Boost • Variable High Pass • Variable Low Pass

XA Series 4-Channel Car Amplifier • 60W RMS x 2 Chan. @ 4 Ohm • 85W RMS x 2 Chan. @ 2 Ohm • 160W RMS x 1 Chan. @ 4 Ohm Bridged • MOSFET Power Supply • Variable Bass Boost • Variable High Pass • Variable Low Pass

Soundstream TRX4.880 R/B

880W RMS, Tarantula Series 4-Channel Amplifier

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880W RMS, Tarantula Series 4-Channel Amplifier

Tarantula Series 4-Channel Car Amplifier • 880W RMS • 220W x 4-Chan @ 2 Ohm • 130W x 4-Chan @ 4 Ohm • IDI (Intelligent Distress Indicator) • Tri-Guard System Protection Circuitry • OEM Floating Ground Input

Tarantula Series 4-Channel Car Amplifier • 880W RMS • 220W x 4-Chan @ 2 Ohm • 130W x 4-Chan @ 4 Ohm • IDI (Intelligent Distress Indicator) • Tri-Guard System Protection Circuitry • OEM Floating Ground Input

(2) FREE Pairs Alpine SPS-610 (6.5") + Alpine XA70F Amplified Speaker Package

(2) Pairs 6.5" Alpine SPS-610 + Alpine XA70F 1400 Watt Amplified Pro Speaker Package

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(2) Pairs 6.5" Alpine SPS-610 + Alpine XA70F 1400 Watt Amplified Pro Speaker Package

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

Sony MEX-XB100BT (OPEN BOX INCOMPLETE)

Single DIN Hi-Power Bluetooth In-Dash CD/AM/FM/SiriusXM Ready Receiver with 160W RMS (CEA Rated Power) built-in 4-channel Amplifier!

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Single DIN Hi-Power Bluetooth In-Dash CD/AM/FM/SiriusXM Ready Receiver with 160W RMS (CEA Rated Power) built-in 4-channel Amplifier!

• In-Dash Receiver with built-in 4-channel Amplifier
• Built-In Bluetooth with NFC
• Intelligent Mega Bass
• 10-Band Equalizer
• 3 Sets of 5V Preamp Outputs
• 100W x 4 Chan. MAX, 40W x 4 Chan. RMS

• In-Dash Receiver with built-in 4-channel Amplifier
• Built-In Bluetooth with NFC
• Intelligent Mega Bass
• 10-Band Equalizer
• 3 Sets of 5V Preamp Outputs
• 100W x 4 Chan. MAX, 40W x 4 Chan. RMS

MTX Thunder Elite 1004 (TE1004) R/B

(Factory Refurbished) 1900W Max, 4-Channel Thunder Elite Amplifier

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(Factory Refurbished) 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

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

Planet Audio AC800.4-OPEN BOX

800W Anarchy Series 4-Channel Class A/B Power Amplifier

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800W Anarchy Series 4-Channel Class A/B Power Amplifier

• RMS: 100W x 4 @ 4 ohm, 300W x 4 @ 2 ohm
• Total Peak Power: 1200W
• Pulse Width Modulated MOSFET Power Supply
• Variable Bass Boost
• Heavy Duty Black Anodized Heatsink For Heat Dissipation
• Dimensions: 10.66"W x 10"L x 2.41"H

• RMS: 100W x 4 @ 4 ohm, 300W x 4 @ 2 ohm
• Total Peak Power: 1200W
• Pulse Width Modulated MOSFET Power Supply
• Variable Bass Boost
• Heavy Duty Black Anodized Heatsink For Heat Dissipation
• Dimensions: 10.66"W x 10"L x 2.41"H

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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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