Garage
Shop

Discontinued 4-Channel Amplifiers

Loading...
Filters

We are sorry, no available results!

Shop the Category

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

Audiobahn A1504DP R/B

True Digital Series 4-Channel Amplifier (Factory Refurbished)

Go to item page Right Arrow Icon of Right Arrow

True Digital Series 4-Channel Amplifier (Factory Refurbished)

1 ohm stereo stable, 2 ohm bridged • True Digital Circuitry • Dual Cooling Fans • HP/LP Crossovers • Bass Boost • Cobalt Blue Illumination • 150/300/450 watts x 4 ch. (@ 4/2/1 ohm)

1 ohm stereo stable, 2 ohm bridged • True Digital Circuitry • Dual Cooling Fans • HP/LP Crossovers • Bass Boost • Cobalt Blue Illumination • 150/300/450 watts x 4 ch. (@ 4/2/1 ohm)

Open Box Hifonics Zeus ZXi150.4

1200W RMS, Zues Series 4-Channel Amplifier (ZXi 150.4)

Go to item page Right Arrow Icon of Right Arrow

1200W RMS, Zues Series 4-Channel Amplifier (ZXi 150.4)

Zeus Series 4 Channel Class A/B Car Amplifier • 300W x 4-Chan. @ 2 Ohm • 150W x 4-Chan. @ 4 Ohm • Wired HFR-3 Remote • 4-Way System Protection • MOSFET Power Supply • Silver-Plated RCA Inputs

Zeus Series 4 Channel Class A/B Car Amplifier • 300W x 4-Chan. @ 2 Ohm • 150W x 4-Chan. @ 4 Ohm • Wired HFR-3 Remote • 4-Way System Protection • MOSFET Power Supply • Silver-Plated RCA Inputs

Kicker IX500.4 (10IX500.4) Open Box

(Open Box) 500W RMS, 4-Channel Class D IX Series Amplifier (IX5004)

Go to item page Right Arrow Icon of Right Arrow

(Open Box) 500W RMS, 4-Channel Class D IX Series Amplifier (IX5004)

IX Series Class D Car Amplifier • 4-Channel Operation • 75W x 4 Chan. @ 4 ohm • 125W x 4 Chan. @ 2 ohm • 250W x 2 Chan. Bridged • 0-18 Bass Boost • Gold-Plated Terminals • Small Footprint • Low and High Pass Filters

IX Series Class D Car Amplifier • 4-Channel Operation • 75W x 4 Chan. @ 4 ohm • 125W x 4 Chan. @ 2 ohm • 250W x 2 Chan. Bridged • 0-18 Bass Boost • Gold-Plated Terminals • Small Footprint • Low and High Pass Filters

Boss CX1000 R/B

2000W Max 4-Channel Chaos Exxtreme Series Amplifier (CX-1000)

Go to item page Right Arrow Icon of Right Arrow

2000W Max 4-Channel Chaos Exxtreme Series Amplifier (CX-1000)

Chaos Exxtreme Series 4-Channel Class AB Car Amplifier • 200W x 4 chan. @ 4 ohm • 500W x 4 chan. Max • Pulse width modulated (PWM) MOSFET power supply • Speaker-level inputs • Soft power-on/off

Chaos Exxtreme Series 4-Channel Class AB Car Amplifier • 200W x 4 chan. @ 4 ohm • 500W x 4 chan. Max • Pulse width modulated (PWM) MOSFET power supply • Speaker-level inputs • Soft power-on/off

EXCLUSIVE

JVC Speakers + Kicker Amplifier Bundle

Two Sets of CS-V527 5-1/4" 2-Way DRVN Series Speakers and 200W RMS, 11DX200.4 Amp, Amp Kit, Sound Dampening

Go to item page Right Arrow Icon of Right Arrow

Two Sets of CS-V527 5-1/4" 2-Way DRVN Series Speakers and 200W RMS, 11DX200.4 Amp, Amp Kit, Sound Dampening

5-1/4" DRVN Series Car Speakers • 2-Way Coaxial • 27W RMS • 4 Ohm Impedance • Carbon Mica Woofer Cone • Hybrid Cloth and Rubber Surround • 1" PEI Midrange Tweeter • Amplifier, and Amp Wiring Kit, and Sound Dampening Included!

5-1/4" DRVN Series Car Speakers • 2-Way Coaxial • 27W RMS • 4 Ohm Impedance • Carbon Mica Woofer Cone • Hybrid Cloth and Rubber Surround • 1" PEI Midrange Tweeter • Amplifier, and Amp Wiring Kit, and Sound Dampening Included!

One Pair of Boss PG693 w/ BT Amplifier, Speaker Boxes and Power Supply

6x9" Phantom Ghost Series Speakers + 4-Channel Bluetooth Micro Amplifier with Controller + 6" x 9" Wedge Box + Regulated Power Supply

Go to item page Right Arrow Icon of Right Arrow

6x9" Phantom Ghost Series Speakers + 4-Channel Bluetooth Micro Amplifier with Controller + 6" x 9" Wedge Box + Regulated Power Supply

• Peak Power: 275 watts each
• RMS Power: 137.5 watts each
• 2" Mylar Dome Midrange
• 3/4" Piezo Dome Tweeter
• Mounting Depth: 3-1/10"
• Black Poly Injection Cone
• 4-Channel Bluetooth Micro Marine Amplifie
• 6 Button External Multifunction Controller
• Quick connect Molex power harnes
• 3-way protection circuitry (thermal, overload, and speaker short protection)

• Peak Power: 275 watts each
• RMS Power: 137.5 watts each
• 2" Mylar Dome Midrange
• 3/4" Piezo Dome Tweeter
• Mounting Depth: 3-1/10"
• Black Poly Injection Cone
• 4-Channel Bluetooth Micro Marine Amplifie
• 6 Button External Multifunction Controller
• Quick connect Molex power harnes
• 3-way protection circuitry (thermal, overload, and speaker short protection)

Pioneer GM-6400F Open Box

600W Max, 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

600W Max, 4-Channel Amplifier

GM Series • Bridgeable 4-Channel • Class AB Amplifier • 60 Watts RMS x4 Channel @ 4 ohm • 75 Watts RMS x 4 Channel @ 2 ohm • Speaker Level Inputs • LPF/HPF Crossovers • Gain Caution Feature • H Shaped Chassis

GM Series • Bridgeable 4-Channel • Class AB Amplifier • 60 Watts RMS x4 Channel @ 4 ohm • 75 Watts RMS x 4 Channel @ 2 ohm • Speaker Level Inputs • LPF/HPF Crossovers • Gain Caution Feature • H Shaped Chassis

Deaf Bonce AAB-400.4 ATOM

265W RMS Apocalypse Series Class-D 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

265W RMS Apocalypse Series Class-D 4-Channel Amplifier

• 140 watts x 4 channel @ 4 ohm
• 265 watts x 4 channel @ 2 ohm
• Bridged: 833 watts x 2 channel @ 4 ohm
• Total RMS Power: 265 watts
• Class D 1 ohm Stable 4-Channel Amplifier

• 140 watts x 4 channel @ 4 ohm
• 265 watts x 4 channel @ 2 ohm
• Bridged: 833 watts x 2 channel @ 4 ohm
• Total RMS Power: 265 watts
• Class D 1 ohm Stable 4-Channel Amplifier

Audiobahn A5100T R/B

3180W Max, 5.1 Surround Sound 6-Channel Amplifier (Factory Refurbished)

Go to item page Right Arrow Icon of Right Arrow

3180W Max, 5.1 Surround Sound 6-Channel Amplifier (Factory Refurbished)

6-Channel 5.1 Surround Sound Amplifier • 2 front channels, 2 rear channels, 1 center channel, and 1 subwoofer channel (1 ohm stable) • cooling fan • MOSFET power supply • digital voltage readout • blue illumination

6-Channel 5.1 Surround Sound Amplifier • 2 front channels, 2 rear channels, 1 center channel, and 1 subwoofer channel (1 ohm stable) • cooling fan • MOSFET power supply • digital voltage readout • blue illumination

Alpine PDX-F6 (Open Box)

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier

Go to item page Right Arrow Icon of Right Arrow

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

Memphis 16-PR4.50 R/B

(Refurbished) Power Reference PR Series 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

(Refurbished) Power Reference PR Series 4-Channel Amplifier

Power Reference Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 70W x 4 chan. @ 2 ohm • 200W Max x 4 chan. Max • LED power and protection indicators • Bridgeable operation

Power Reference Series 4-Channel Class AB Car Amplifier • 50W x 4 chan. @ 4 ohm • 70W x 4 chan. @ 2 ohm • 200W Max x 4 chan. Max • LED power and protection indicators • Bridgeable operation

Soundstream TRX4.420 R/B

420W RMS, Tarantula Series 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

420W RMS, Tarantula Series 4-Channel Amplifier

Tarantula Series 4-Channel Car Amplifier • 420W RMS • 105W x 4-Chan @ 2 Ohm • 70W x 4-Chan @ 4 Ohm • IDI (Intelligent Distress Indicator) • Tri-Guard System Protection Circuitry • OEM Floating Ground Input

Tarantula Series 4-Channel Car Amplifier • 420W RMS • 105W x 4-Chan @ 2 Ohm • 70W x 4-Chan @ 4 Ohm • IDI (Intelligent Distress Indicator) • Tri-Guard System Protection Circuitry • OEM Floating Ground Input

Boss D550.4 R/B

2200W Max, 4-Channel Diablo Series Amplifier (D5504)

Go to item page Right Arrow Icon of Right Arrow

2200W Max, 4-Channel Diablo Series Amplifier (D5504)

Diablo Series 4-Channel Class AB Car Amplifier • 230W x 4 chan. @ 4 ohm • 550W x 2 chan. Max • MOSFET power supply • LED power and protection indicators • Variable high/low pass crossovers

Diablo Series 4-Channel Class AB Car Amplifier • 230W x 4 chan. @ 4 ohm • 550W x 2 chan. Max • MOSFET power supply • LED power and protection indicators • Variable high/low pass crossovers

Kicker KX650.4

KX-Series 04KX650.4 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

KX-Series 04KX650.4 4-Channel Amplifier

4-Channel KX-Series Power Amplifier • 170W RMS x 4 @ 2 • KickBass • 4-Way Protection • Aluminum EndKaps • Adjustable Input Gain • High and Low Level Inputs

4-Channel KX-Series Power Amplifier • 170W RMS x 4 @ 2 • KickBass • 4-Way Protection • Aluminum EndKaps • Adjustable Input Gain • High and Low Level Inputs

EXCLUSIVE

Rockford Fosgate + Crossfire Amplifier Bundle

6-1/2" P1653 Punch Series Car Speakers + BMF400.4 4-Channel Amplifier + Kit + Sound Dampening

Go to item page Right Arrow Icon of Right Arrow

6-1/2" P1653 Punch Series Car Speakers + BMF400.4 4-Channel Amplifier + Kit + Sound Dampening

6-1/2" Punch Series 3-Way Car Speakers • 240W Max • 120W RMS • BMF Series 4-Channel Class A/B Car Amplifier • MOSFET Power Supply • 5-Way System Protection Circuitry • Amplifier Kit • Sound Dampening Material

6-1/2" Punch Series 3-Way Car Speakers • 240W Max • 120W RMS • BMF Series 4-Channel Class A/B Car Amplifier • MOSFET Power Supply • 5-Way System Protection Circuitry • Amplifier Kit • Sound Dampening Material

Alpine PDX-4.100 Open Box

4-Channel Power Density Digital Amplifier (PDX4.100)

Go to item page Right Arrow Icon of Right Arrow

4-Channel Power Density Digital Amplifier (PDX4.100)

4-Channel Power Density Digital Amplifier • 100W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

4-Channel Power Density Digital Amplifier • 100W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

Alpine PDX-4.100 R/B

4-Channel Power Density Digital Amplifier (PDX4.100)

Go to item page Right Arrow Icon of Right Arrow

4-Channel Power Density Digital Amplifier (PDX4.100)

4-Channel Power Density Digital Amplifier • 100W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

4-Channel Power Density Digital Amplifier • 100W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

Clarion XR2410 R/B

400W, XR Series 4-Channel Amplifier

Go to item page Right Arrow Icon of Right Arrow

400W, XR Series 4-Channel Amplifier

XR Series 4-Channel Car Amplifier • 60W x 4 Chan. @ 4 ohm • 400W Max • MOSFET power supply • Line and Speaker-Level Inputs • Gold-Plated RCA and Speaker Level Inputs • Variable High/Low Pass Filter

XR Series 4-Channel Car Amplifier • 60W x 4 Chan. @ 4 ohm • 400W Max • MOSFET power supply • Line and Speaker-Level Inputs • Gold-Plated RCA and Speaker Level Inputs • Variable High/Low Pass Filter

American Bass PH4100 OPEN BOX COMPLETE

480W 4 Channel PH Series Class AB Amplifier

Go to item page Right Arrow Icon of Right Arrow

480W 4 Channel PH Series Class AB Amplifier

• Max Power: 80W x 4 @ 4 ohm, 120W x 4 @ 2 ohm
• Total Peak Power: 480W
• Variable Low Pass Filter
• Dimensions: 5.51" W x 10" L x 2.12" H

• Max Power: 80W x 4 @ 4 ohm, 120W x 4 @ 2 ohm
• Total Peak Power: 480W
• Variable Low Pass Filter
• Dimensions: 5.51" W x 10" L x 2.12" H

Infinity KAPPA FOUR Open Box

(Open Box) 1200W Max, Kappa Series 4-Channel Amplifier (KAPPA-FOUR)

Go to item page Right Arrow Icon of Right Arrow

(Open Box) 1200W Max, Kappa Series 4-Channel Amplifier (KAPPA-FOUR)

Kappa Series 4-Channel Amplifier • 125W x 4 Chan. @ 4 Ohm • 150W x 4 Chan. @ 2 Ohm • 300W x 4 Chan. Max • Tuned Bass EQ • Speaker-level Inputs • Variable High and Low Pass Filters • 4/3/2 Channel Operation

Kappa Series 4-Channel Amplifier • 125W x 4 Chan. @ 4 Ohm • 150W x 4 Chan. @ 2 Ohm • 300W x 4 Chan. Max • Tuned Bass EQ • Speaker-level Inputs • Variable High and Low Pass Filters • 4/3/2 Channel Operation

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

    1977 Mazda RX-4

    2025 Audi Q3

    2006 Cadillac STS

    1980 Buick Skyhawk

    2022 Lexus ES250

    1992 Isuzu Spacecab

    2003 Jaguar XJ

    2016 Dodge Ram ProMaster 1500

    1999 Volvo V70

    2007 Suzuki Forenza

    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.