Garage
Shop

Discontinued 4-Channel Amplifiers

Loading...
Filters
You Recently Chose:

We are sorry, no available results!

Shop the Category

filter-icon Filters & Sort
You are currently viewing discontinued products.

Audiobahn A4125HCT R/B

4000W Max, High Current 4-Channel Amplifier (Factory Refurbished)

Go to item page Right Arrow Icon of Right Arrow

4000W Max, High Current 4-Channel Amplifier (Factory Refurbished)

4000W Max, High Current Series 4-Channel Amplifier • 2000W RMS @ 1 ohm • 1000W RMS @ 2 ohm • 500W RMS @ 4 ohm • Blue Illuminated VU Meter • Beautiful Chrome Design Heatsink • S/N Ratio: 100dB • Bass Boost: 0-18dB

4000W Max, High Current Series 4-Channel Amplifier • 2000W RMS @ 1 ohm • 1000W RMS @ 2 ohm • 500W RMS @ 4 ohm • Blue Illuminated VU Meter • Beautiful Chrome Design Heatsink • S/N Ratio: 100dB • Bass Boost: 0-18dB

Sony XM-ZR704-OPEN BOX

700W ZR Series 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

700W ZR Series 4-Channel Amplifier

• 70W RMS x 4-Chan. @ 4 Ohm
• 80W RMS x 4-Chan. @ 2 Ohm
• 700W Max
• High-Level Sensing Power On Feature
• Gold Plated Speaker Terminals
• Transformerless Circuit

• 70W RMS x 4-Chan. @ 4 Ohm
• 80W RMS x 4-Chan. @ 2 Ohm
• 700W Max
• High-Level Sensing Power On Feature
• Gold Plated Speaker Terminals
• Transformerless Circuit

Cadence XaH125.4b (Black)

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

Go to item page Right Arrow Icon of Right Arrow

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

Xenith Series 4-Channel Class A/B Car Amplifier with Black 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 Black 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

500W Cerwin-Vega Amplifier + Kicker Amplifier Kit Bundle

Cerwin-Vega VEGA500.4 Amplifier + Kicker ZCK44 Amplifier Kit

Go to item page Right Arrow Icon of Right Arrow

Cerwin-Vega VEGA500.4 Amplifier + Kicker ZCK44 Amplifier Kit

Cerwin-Vega VEGA500.4 Amplifier + Kicker ZCK44 Amplifier Kit • 4 ohm: 75 watts x 4 chan. • 2 ohm: 125 watts x 4 chan. • Bridged, 4 ohm: 250 watts x 2 chan. • VEGA Series 4-Channel Class AB Car Amplifier

Cerwin-Vega VEGA500.4 Amplifier + Kicker ZCK44 Amplifier Kit • 4 ohm: 75 watts x 4 chan. • 2 ohm: 125 watts x 4 chan. • Bridged, 4 ohm: 250 watts x 2 chan. • VEGA Series 4-Channel Class AB Car Amplifier

Audiobahn A4004J

400W 4-Channel Intake Series Car Amplifier

Go to item page Right Arrow Icon of Right Arrow

400W 4-Channel Intake Series Car Amplifier

4-Channel Class AB Intake Series Car Amplifier • 50W x 4 Chan @ 4 Ohm • 100W x 4 Chan @ 2 Ohm • Bass Boost On/Off Switch • High Gloss Chrome-Plated Finish • Cobalt Blue Illumination • Air Intake Fan

4-Channel Class AB Intake Series Car Amplifier • 50W x 4 Chan @ 4 Ohm • 100W x 4 Chan @ 2 Ohm • Bass Boost On/Off Switch • High Gloss Chrome-Plated Finish • Cobalt Blue Illumination • Air Intake Fan

Hifonics ZXi 6408

680W RMS, 4-Channel Zeus ZXi Series Amplifier (ZXi6408)

Go to item page Right Arrow Icon of Right Arrow

680W RMS, 4-Channel Zeus ZXi Series Amplifier (ZXi6408)

Zeus ZXi Series 4-Channel Class AB Car Amplifier • 85W x 4 chan. @ 4 ohm • 170W x 4 chan. @ 2 ohm • 340W x 2 chan. @ 4 ohm • Pulse width modulated (PWM) MOSFET power supply • Preamp RCA outputs • DC, short, thermal, and overload protection circuitry

Zeus ZXi Series 4-Channel Class AB Car Amplifier • 85W x 4 chan. @ 4 ohm • 170W x 4 chan. @ 2 ohm • 340W x 2 chan. @ 4 ohm • Pulse width modulated (PWM) MOSFET power supply • Preamp RCA outputs • DC, short, thermal, and overload protection circuitry

MB Quart RA480.4 (Factory Refurbished)

480W 4-Channel Reference Series Bridgeable Power Amplifier (RA4804)

Go to item page Right Arrow Icon of Right Arrow

480W 4-Channel Reference Series Bridgeable Power Amplifier (RA4804)

• 60W x 4-Chan. @ 4 ohm
• 120W x 4-Chan. @ 2 ohm
• 240W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

• 60W x 4-Chan. @ 4 ohm
• 120W x 4-Chan. @ 2 ohm
• 240W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

Soundstream TRX4.640 R/B

640W RMS, Tarantula Series 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

640W RMS, Tarantula Series 4-Channel Amplifier

Tarantula Series 4-Channel Car Amplifier • 640W RMS • 160W x 4-Chan @ 2 Ohm • 100W x 4-Chan @ 4 Ohm • IDI (Intelligent Distress Indicator) • Tri-Guard System Protection Circuitry • OEM Floating Ground Input

Tarantula Series 4-Channel Car Amplifier • 640W RMS • 160W x 4-Chan @ 2 Ohm • 100W x 4-Chan @ 4 Ohm • IDI (Intelligent Distress Indicator) • Tri-Guard System Protection Circuitry • OEM Floating Ground Input

Boss R1004- OPEN BOX

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

Go to item page Right Arrow Icon of Right Arrow

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

• RMS: 50W x 4 @ 4 ohm, 100W x 2 @ 2 ohm
• Total Peak Power: 400W
• Variable high-pass Filter
• Dimensions: 9"W x 7-3/4"L x 2"H

• RMS: 50W x 4 @ 4 ohm, 100W x 2 @ 2 ohm
• Total Peak Power: 400W
• Variable high-pass Filter
• Dimensions: 9"W x 7-3/4"L x 2"H

Go to item page Right Arrow Icon of Right Arrow

AV Control Unit with 45W x 4 MOSFET amplifier, CD changer control...

AV Control Unit with 45W x 4 MOSFET amplifier, CD changer control...

Go to item page Right Arrow Icon of Right Arrow

100W RMS x 4 at 4 ohm • 400W RMS x 2 in bridged mode • 200W RMS x 4 at 2 ohm • Requires 4 Gauge Wiring • 2 ohm mono stable • Remote Bass Level Control

100W RMS x 4 at 4 ohm • 400W RMS x 2 in bridged mode • 200W RMS x 4 at 2 ohm • Requires 4 Gauge Wiring • 2 ohm mono stable • Remote Bass Level Control

Alpine X-A70F (Damaged Packaging Only New)

700W RMS X-Series Class-D 4-Channel 2 ohm Stable Amplifier

Go to item page Right Arrow Icon of Right Arrow

700W RMS X-Series Class-D 4-Channel 2 ohm Stable Amplifier

• 120 Watts RMS x 4 @ 4 ohm
• 715 Watts RMS x 4 @ 2 ohm
• 350 Watts RMS x 2 @ 4 ohm, Bridged
• CEA-2006 Compliant
• Low Pass and High Pass Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

• 120 Watts RMS x 4 @ 4 ohm
• 715 Watts RMS x 4 @ 2 ohm
• 350 Watts RMS x 2 @ 4 ohm, Bridged
• CEA-2006 Compliant
• Low Pass and High Pass Filters
• 0 - 12dB Bass Boost
• Aluminum Heatsink
• Dimensions: 11-3/4" W x 7-5/8" L x 2" H

Pioneer Premier PRS-D4000F

Premier PRS ICE 4-Channel Class D ICEpower Technology Amplifier

Go to item page Right Arrow Icon of Right Arrow

Premier PRS ICE 4-Channel Class D ICEpower Technology Amplifier

1200 watt Max, Bridgeable 4-Channel Class FD (Full-Range Class D) Amplifier • 75 watts x 4 chan. @ 4 ohm RMS • 300 watts x 2 chan. @ 4 ohm Bridged RMS • CEA-2006 Compliant • Energy Saving Design • Compact Chassis • High Pass and Low Pass Variable Crossover

1200 watt Max, Bridgeable 4-Channel Class FD (Full-Range Class D) Amplifier • 75 watts x 4 chan. @ 4 ohm RMS • 300 watts x 2 chan. @ 4 ohm Bridged RMS • CEA-2006 Compliant • Energy Saving Design • Compact Chassis • High Pass and Low Pass Variable Crossover

Alpine Speakers + Kicker Amplifier Bundle

5-1/4" SPR-50C Component Car Speakers + Kicker IX500.4 4-Channel Class D Amp + Kit + Sound Dampening

Go to item page Right Arrow Icon of Right Arrow

5-1/4" SPR-50C Component Car Speakers + Kicker IX500.4 4-Channel Class D Amp + Kit + Sound Dampening

5-1/4" Type-R 2-Way Component System • 600W Max • 200W RMS • IX Series 4-Channel Class D Car Amplifier • MOSFET Power Supply • CEA-2006 Compliant Amplifier • Amplifier Kit • Sound Dampening Material

5-1/4" Type-R 2-Way Component System • 600W Max • 200W RMS • IX Series 4-Channel Class D Car Amplifier • MOSFET Power Supply • CEA-2006 Compliant Amplifier • Amplifier Kit • Sound Dampening Material

EXCLUSIVE

Renegade Speakers + Hifonics Amplifier Bundle

6-1/2" Renegade RX62 RX Series Speakers + Hifonics ZXi80.4 4 Channel Amp + Kit + Sound Dampening

Go to item page Right Arrow Icon of Right Arrow

6-1/2" Renegade RX62 RX Series Speakers + Hifonics ZXi80.4 4 Channel Amp + Kit + Sound Dampening

6-1/2" RX Series 3-Way Car Speakers • 400W Max • 200W RMS • Zeus Series 4-Channel Class A/B Amplifier • MOSFET Power Supply • 4-Way Protection Circuitry • Amplifier Kit • Sound Dampening Material

6-1/2" RX Series 3-Way Car Speakers • 400W Max • 200W RMS • Zeus Series 4-Channel Class A/B Amplifier • MOSFET Power Supply • 4-Way Protection Circuitry • Amplifier Kit • Sound Dampening Material

Phoenix Gold RSd 300.4 R/B

(Factory Refurbished) Radial Sd Series 4-Channel Amplifier, RSd300.4

Go to item page Right Arrow Icon of Right Arrow

(Factory Refurbished) Radial Sd Series 4-Channel Amplifier, RSd300.4

300W RSd 4-Channel Amplifier • 48W x 4 chan. @ 4 Ohm • 80W x 4 chan. @ 2 Ohm • MOSFET power supply • protection circuitry • line level inputs • variable bass boost • S/N ratio: 83dB

300W RSd 4-Channel Amplifier • 48W x 4 chan. @ 4 Ohm • 80W x 4 chan. @ 2 Ohm • MOSFET power supply • protection circuitry • line level inputs • variable bass boost • S/N ratio: 83dB

Hifonics X1200.4 OPEN BOX INCOMPLETE

1200W BRUTUS X-14 Series 4-Channel Class AB Car Amplifier

Go to item page Right Arrow Icon of Right Arrow

1200W BRUTUS X-14 Series 4-Channel Class AB Car Amplifier

Missing manual and box. item is used and has been previously installed
• RMS Power: 150W x 4 @ 4 ohm, 300W x 4 @ 2 ohm, 600W x 2 @ 4 ohm Bridged
• Total Peak Power: 1200W
• CEA-2006 Compliant/Preamp Outputs/LPF
• 17.72"W x 2.5"H x 9.49"L

Missing manual and box. item is used and has been previously installed
• RMS Power: 150W x 4 @ 4 ohm, 300W x 4 @ 2 ohm, 600W x 2 @ 4 ohm Bridged
• Total Peak Power: 1200W
• CEA-2006 Compliant/Preamp Outputs/LPF
• 17.72"W x 2.5"H x 9.49"L

Rockford Fosgate PRIME R300-4 Open Box

300W Prime Series 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

300W Prime Series 4-Channel Amplifier

Prime Series 4-Channel Class A/B Car Amplifier • 50 Watts x 4 Chan. @ 4 Ohm • 75 Watts x 4 Chan. @ 2 Ohm • Selectable Bass Boost • 2-Way System Protection Circuitry • Extruded Aluminum Alloy Convection Heat Sink

Prime Series 4-Channel Class A/B Car Amplifier • 50 Watts x 4 Chan. @ 4 Ohm • 75 Watts x 4 Chan. @ 2 Ohm • Selectable Bass Boost • 2-Way System Protection Circuitry • Extruded Aluminum Alloy Convection Heat Sink

Soundstream Human Reign 4

4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

4-Channel Amplifier

Pure Class A 2-Channel Amplifier • 125W RMS x 4 @ 4 • RUBI Proprietary power supply • STACT • Chassisink • Hawkins Bass Control • Auto High Current

Pure Class A 2-Channel Amplifier • 125W RMS x 4 @ 4 • RUBI Proprietary power supply • STACT • Chassisink • Hawkins Bass Control • Auto High Current

Alpine MRX-F30 R/B

Factory Refurbished 300W RMS, 4-Channel X Power Series Car Amplifier

Go to item page Right Arrow Icon of Right Arrow

Factory Refurbished 300W RMS, 4-Channel X Power Series Car Amplifier

MRX Series 4-Channel Car Amplifier • 50W RMS @ 4 Ohm x 4 Channels • 75W RMS @ 2 Ohm x 4 Channels • 150W RMS @ 4 Ohm Bridged x 2 Channels • Variable Low-Pass Crossover • Variable High-Pass Crossover • Variable Bass Boost

MRX Series 4-Channel Car Amplifier • 50W RMS @ 4 Ohm x 4 Channels • 75W RMS @ 2 Ohm x 4 Channels • 150W RMS @ 4 Ohm Bridged x 2 Channels • Variable Low-Pass Crossover • Variable High-Pass Crossover • Variable Bass Boost

Items per page: 20 40 60

    Clear all

    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.
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage
    Vehicle
    Store
    Delete

    1981 Isuzu I-Mark

    2016 BMW 4 Series

    2002 Saturn SC1

    2012 Buick Enclave

    2000 Nissan Maxima

    2016 Kia Forte

    2018 Genesis G90

    2000 Saturn LW2

    1998 Dodge Ram 2500

    2005 Cadillac Escalade EXT

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

    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.