Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Amplifiers
  4. Discontinued 4-Channel Amplifiers

Discontinued 4-Channel Amplifiers

Filters
Amplifiers ✕
Clear Filters
Reset Done
Product Type
Amplifiers,
Price Range
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Key Features
Amplifiers can offer a diverse array of features. If you select more than one feature, then you will view amplifiers that have ALL features selected. These include speaker-level inputs that facilitate seamless integration with factory audio systems, Bluetooth connectivity suitable for ATV/UTV or Classic vehicle setups, built-in DSPs that provide enhanced control over your audio signal, and a host of other functionalities to explore.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Zeus Series (30)
Brutus Series (24)
Mean Machine Series (23)
PowerZone Series (19)
Reference Series (14)
GM Series (13)
Prime Series (11)
Anarchy Series (10)
Phantom Series (10)
HCP Series (9)
Power Pack Series (9)
X Series (9)
Black Ice Series (8)
CX Series (8)
Gothic Series (8)
Ground Pounder Series (8)
Marine V Series (8)
ONYX Series (8)
Picasso Series (8)
Picasso-Nano Series (8)
Punch BR Series (8)
Z-Line Series (8)
AXL Series (7)
Brutus X 14 Series (7)
JAD Series (7)
Riot Series (7)
SAE Series (7)
Tarantula Series (7)
Consumer Line Series (6)
DS Series (6)
GM Digital Series (6)
iON Series (6)
Punch Series (6)
Reaper Series (6)
S Series (6)
Salt Water Series (6)
Torque Series (6)
V Power Series (6)
BAMF Series (5)
Chaos EXXtreme Series (5)
Edge Series (5)
Evolution Series (5)
JD Series (5)
Kappa Series (5)
Machete Series (5)
Power One Series (5)
Power Series (5)
SALT Series (5)
SFB Series (5)
Stealth Series (5)
Apocalypse Series (4)
Buran Series (4)
Crypt Series (4)
Discus Series (4)
DPower Series (4)
GS Series (4)
Mille Power Series (4)
N Series (4)
Razor Series (4)
RD Series (4)
Slash v3 Series (4)
SPL Show Series (4)
V Series (4)
Venezia Series (4)
Armor Series (3)
ATA Series (3)
Chaos EXXtreme II Series (3)
Club Series (3)
EXL-P Series (3)
GTO Series (3)
HED Series (3)
HED3 Series (3)
KX Series (3)
MOJO Pro Series (3)
Mt. Olympus Series (3)
PDR Series (3)
Performance Series (3)
Power Class Series (3)
Primo Series (3)
Q Series (3)
SPL (3)
Street Edge Series (3)
WCC Series (3)
XED Series (3)
XQ Series (3)
ZRS Series (3)
APMI Series (2)
Atom Series (2)
BB Series (2)
Bomber Series (2)
BX Series (2)
Chaos Epic Series (2)
COLOSSUS Series (2)
Compact Series (2)
D Series (2)
DRVN Series (2)
HD Series (2)
HX Series (2)
JX Series (2)
Low Profile Series (2)
LP Series (2)
MHD Series (2)
MOFO Series (2)
Murdered Out Series (2)
N-Series (2)
Nano Edge Series (2)
Overdrive Series (2)
PDX Series (2)
PH Series (2)
PowerZone 2 Series (2)
Psyclone Series (2)
Pulse Series (2)
PXA Series (2)
R-Series (2)
Reserve Series (2)
Sedona Series (2)
SixFive Series (2)
SK Series (2)
SQ Series (2)
Status Series (2)
Stroker Pro Series (2)
SXE Series (2)
TS Series (2)
Tsunami Series (2)
United Series (2)
Vertigo Series (2)
VFL Series (2)
X-Line Series (2)
XD Series (2)
XD-v2 Series (2)
Xenith Series (2)
ZTX Series (2)
A3 Series (1)
ACM Series (1)
Alpha Series (1)
APK Series (1)
APSM Series (1)
Arachnid Series (1)
ATX Series (1)
AX2 Series (1)
BBX Series (1)
Big Bang Series (1)
BP Amplifier Series (1)
BPX Series (1)
CANDY-X Series (1)
Chaos Series (1)
Competition Series (1)
CTX Series (1)
Dealer Line Series (1)
DSP Series (1)
DX Series (1)
Elite Series (1)
EXL Series (1)
Force Series (1)
Formula Series (1)
Gen-X (1)
Hercules LTD Series (1)
JA Series (1)
JackHammer Series (1)
KAC Series (1)
Pioneer ME Series (1)
MINI BANG Series (1)
Mini Max Series (1)
Momentum CSA Series (1)
MSA Series (1)
MVi Series (1)
MXA Series (1)
Nano BiT Series (1)
Phanatik Series (1)
Power Reference (1)
Power X Series (1)
Prime R2 Series (1)
Primus Series (1)
PRX Series (1)
R Series (1)
Reference MYKRO Series (1)
Saber Series (1)
Sport Series (1)
Stadium Series (1)
Stage Series (1)
Stealth Bomber Series (1)
Stealth Shot Series (1)
Street Machine Series (1)
Street Reference Pro (1)
Stroker RPM Series (1)
Tarantula-NANO Series (1)
Terminator Series (1)
Thunder Series (1)
Trax Micro Series (1)
USX Series (1)
VEGA Series (1)
VFL Hybrid Series (1)
VXi Series (1)
X Power Series (1)
XDM Series (1)
XFL Series (1)
XThunder Series (1)
ZXI Series (1)
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Condition

Shop the Category

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

Crunch PZ1200.4 (Factory Refurbished)

1200W PowerZone Series 4-Channel Class AB Car Audio Amplifier

PZ1200.4 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Crunch PZ1200.4 (Factory Refurbished)

1200W PowerZone Series 4-Channel Class AB Car Audio Amplifier

• 1200 Watts Max
• 300 Watts x 4-Chan. @ 2 Ohm
• 4-Way System Protection
• Selectable Highpass/Lowpass Filters
• Speaker-level (high-level) inputs
• Signal to Noise Ration: >90 dB

1

• 1200 Watts Max
• 300 Watts x 4-Chan. @ 2 Ohm
• 4-Way System Protection
• Selectable Highpass/Lowpass Filters
• Speaker-level (high-level) inputs
• Signal to Noise Ration: >90 dB

Autotek ATX950.4 (Factory Refurbished)

950W Max 4-Channel Class AB ATX Series Amplifier

LS-ATX950.4-RB big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Autotek ATX950.4 (Factory Refurbished)

950W Max 4-Channel Class AB ATX Series Amplifier

• ATX Series 4-Channel Class A/B Car Amplifier
• 950 Watts Max
• 240 Watts x 4 Chan @ 2 Ohm
• Military Grade PCB Design
• 0 to +12 dB Bass Boost
• Speaker-Level Inputs
• Preamp RCA Outputs

• ATX Series 4-Channel Class A/B Car Amplifier
• 950 Watts Max
• 240 Watts x 4 Chan @ 2 Ohm
• Military Grade PCB Design
• 0 to +12 dB Bass Boost
• Speaker-Level Inputs
• Preamp RCA Outputs

Alpine MRV-F300 (Open Box, Complete)

300W 4-Channel Class D V-Power Series Compact Car Amplifier

MRV-F300 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Alpine MRV-F300 (Open Box, Complete)

300W 4-Channel Class D V-Power Series Compact Car Amplifier

• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

• RMS Power: 50W x 4-Chan. @ 4 ohm, 75W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Same Power in a 40% Smaller Chassis

JBL GX-A604 OPEN BOX

435W 4-Channel GX Series Amplifier

GX-A604 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

JBL GX-A604 OPEN BOX

435W 4-Channel GX Series Amplifier

• RMS Power: 60W x 4 @ 4 ohm, 85W x 4 @ 2 ohm
• Total Peak Power: 435W
• High and Low Pass Filters
• Dimensions: 8-1/8" W x 11-13/16" L x 2-1/16" H

• RMS Power: 60W x 4 @ 4 ohm, 85W x 4 @ 2 ohm
• Total Peak Power: 435W
• High and Low Pass Filters
• Dimensions: 8-1/8" W x 11-13/16" L x 2-1/16" H

MB Quart DSC 480 Open Box

(Open Box) 640W RMS, Class A/B 4-Channel Discus Series Amplifier (DSC480)

DSC-480 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

MB Quart DSC 480 Open Box

(Open Box) 640W RMS, Class A/B 4-Channel Discus Series Amplifier (DSC480)

Discus Series 4-Channel Class AB Car Amplifier • 80W x 4 Chan. @ 4 Ohm • 160W x 4 Chan. @ 2 Ohm • 320W x 2 Chan. @ 4 Ohm • Preamp RCA Outputs • Switchable 2-Channel/4-Channel Input Modes

Discus Series 4-Channel Class AB Car Amplifier • 80W x 4 Chan. @ 4 Ohm • 160W x 4 Chan. @ 2 Ohm • 320W x 2 Chan. @ 4 Ohm • Preamp RCA Outputs • Switchable 2-Channel/4-Channel Input Modes

Clif Designs CD4.4LX

No picture DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Clif Designs CD4.4LX

1400 Watt 4-Channel Class-A/B Amplfier • 100W RMS x 4 @ 4 Ohm • 700W Peak x 2 chan. @ 2 Ohm • Tri-Mode Operation • Soft Start Circuitry

1400 Watt 4-Channel Class-A/B Amplfier • 100W RMS x 4 @ 4 Ohm • 700W Peak x 2 chan. @ 2 Ohm • Tri-Mode Operation • Soft Start Circuitry

Alpine KTP-445A-open box

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

KTP-445A big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Alpine KTP-445A-open box

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45W x 4 Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45W x 4 Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

Hifonics ZRX2000.4 (Factory Refurbished)

2000W 4-Channel Class A/B Zeus Series Car Amplifier

ZRX2000.4 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Hifonics ZRX2000.4 (Factory Refurbished)

2000W 4-Channel Class A/B Zeus Series Car Amplifier

• 4 ohm: 250 watts x 4-Chan.
• 500 watts x 4-Chan.
• Bridged, 4 ohm: 1000 watts x 2 chan.
• Pulse Width Modulated MOSFET power supply

• 4 ohm: 250 watts x 4-Chan.
• 500 watts x 4-Chan.
• Bridged, 4 ohm: 1000 watts x 2 chan.
• Pulse Width Modulated MOSFET power supply

Boss CE2004

2000W Chaos Epic Series 4-Channel Power Amplifier with Line and Speaker Level Inputs

CE2004 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Boss CE2004

2000W Chaos Epic Series 4-Channel Power Amplifier with Line and Speaker Level Inputs

Chaos Epic Series 4-Channel Power Amplifier • 960W RMS • 2000W Max • MOSFET Power Supply • LED Power and Protect Indicators • Variable Input Gain Control • 2-Way System Protection Circuitry • Heavy Duty Black Anodized Aluminum Heatsink

2

Chaos Epic Series 4-Channel Power Amplifier • 960W RMS • 2000W Max • MOSFET Power Supply • LED Power and Protect Indicators • Variable Input Gain Control • 2-Way System Protection Circuitry • Heavy Duty Black Anodized Aluminum Heatsink

Boss MR1200PA R/B

Refurbished 1200W Max, 4-Channel Marine Audio Amplifier with PA System Microphone for Wakeboard and Other Uses (MR-1200PA)

MR1200PA big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Boss MR1200PA R/B

Refurbished 1200W Max, 4-Channel Marine Audio Amplifier with PA System Microphone for Wakeboard and Other Uses (MR-1200PA)

4-Channel Class AB Marine Amplifier with PA System Microphone • 150W x 4 chan. @ 4 Ohm • 300W x 4 chan. @ 2 Ohm • 600W x 2 chan. @ 4 Ohm • MOSFET PWM (Pulse Width Modulated) power supply • Wired remote bass level control included

4-Channel Class AB Marine Amplifier with PA System Microphone • 150W x 4 chan. @ 4 Ohm • 300W x 4 chan. @ 2 Ohm • 600W x 2 chan. @ 4 Ohm • MOSFET PWM (Pulse Width Modulated) power supply • Wired remote bass level control included

Cerwin-Vega VEGA500.4

500W VEGA Series 4-Channel Class AB Car Amplifier

VEGA500.4 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Cerwin-Vega VEGA500.4

500W VEGA Series 4-Channel Class AB Car Amplifier

• 75W x 4-Chan. @ 4 ohm
• 125W x 4-Chan. @ 2 ohm
• 250W x 2 Chan. @ 4 ohm Bridged
• Vega Bass Boost
• Hi/Low Level Inputs
• Variable Hi/Low-Pass Filters
• Differential Balanced Inputs

5

• 75W x 4-Chan. @ 4 ohm
• 125W x 4-Chan. @ 2 ohm
• 250W x 2 Chan. @ 4 ohm Bridged
• Vega Bass Boost
• Hi/Low Level Inputs
• Variable Hi/Low-Pass Filters
• Differential Balanced Inputs

Hifonics Jupiter 1.5K OPEN BOX

720W 4-Channel Mt. Olympus Series Class AB Amplifier

JUPITER 1.5K big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Hifonics Jupiter 1.5K OPEN BOX

720W 4-Channel Mt. Olympus Series Class AB Amplifier

• 125W x 4-Chan. @ 4 ohm
• 180W x 4-Chan. @ 2 ohm
• 360W x 2 Chan. @ 4 ohm
• 4-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Unique Adjustable Bass Boost and Crossover's with x10 Multiplier for Bi-Amping Speakers

• 125W x 4-Chan. @ 4 ohm
• 180W x 4-Chan. @ 2 ohm
• 360W x 2 Chan. @ 4 ohm
• 4-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• Unique Adjustable Bass Boost and Crossover's with x10 Multiplier for Bi-Amping Speakers

Phoenix Gold Xenon X100.4 R/B

X100.4 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Phoenix Gold Xenon X100.4 R/B

100W RMS 4 CHannel Amplifier • Xe.flow™ • Xe.tune™ • Xe.load™ • RCA Outputs • 100W RMS x 4 (4-1 ohm stereo) • 200W x 2 (8-2 ohm bridged)

100W RMS 4 CHannel Amplifier • Xe.flow™ • Xe.tune™ • Xe.load™ • RCA Outputs • 100W RMS x 4 (4-1 ohm stereo) • 200W x 2 (8-2 ohm bridged)

Alpine PDX-4.150 OB

(OPEN BOX, MISSING ACCESSORIES) 4-Channel Power Density Digital Amplifier

PDX-4.150 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Alpine PDX-4.150 OB

(OPEN BOX, MISSING ACCESSORIES) 4-Channel Power Density Digital Amplifier

4-Channel Power Density Digital Amplifier • 150W 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 • 150W x 4 chan. @ 4 Ohm • class D amp design • stackable installation design • MOSFET power supply • quick connect power connectors

Alpine PDX-F4 R/B

400W RMS PDX Series 4-Channel Power Density Digital Amplifier

PDX-F4 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Alpine PDX-F4 R/B

400W RMS PDX Series 4-Channel Power Density Digital Amplifier

PDX Series 4-Channel Car Amplifier • Class D • 400 Watts RMS • 100 Watts x 4 Chan. RMS • Variable High-Pass and Low-Pass Filter • Blue LED Power/Status Indicator • Compact Size

PDX Series 4-Channel Car Amplifier • Class D • 400 Watts RMS • 100 Watts x 4 Chan. RMS • Variable High-Pass and Low-Pass Filter • Blue LED Power/Status Indicator • Compact Size

MTX RFL404 R/B

800W 4-Channel RFL Series Car Amplifier with Active Cooling Fan

RFL404 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

MTX RFL404 R/B

800W 4-Channel RFL Series Car Amplifier with Active Cooling Fan

4-Channel RFL Series Car Amplifier • Patented Pure N-Channel Technology • Smart Engage Circuitry • JackStands Included • Built-In Active Fan Cooling Technology • CEA-2006 Compliant Amplifier • Preamp RCA Outputs

4-Channel RFL Series Car Amplifier • Patented Pure N-Channel Technology • Smart Engage Circuitry • JackStands Included • Built-In Active Fan Cooling Technology • CEA-2006 Compliant Amplifier • Preamp RCA Outputs

Infinity Reference 475a Open Box

(Open Box) 468W Max, Reference Series Class AB 4-Channel Amplifier (REF475A)

No picture DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Infinity Reference 475a Open Box

(Open Box) 468W Max, Reference Series Class AB 4-Channel Amplifier (REF475A)

Reference Series Class AB 4-Channel Amplifier • 75W x 4 chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • 117W x 4 chan. Max • MOSFET power supply • Gold-plated preamp RCA outputs

Reference Series Class AB 4-Channel Amplifier • 75W x 4 chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • 117W x 4 chan. Max • MOSFET power supply • Gold-plated preamp RCA outputs

Rockford Fosgate Power T8004 R/B

800 watts, 4-Channel Amplifier

T8004 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T8004 R/B

800 watts, 4-Channel Amplifier

800 watt Power Series 4-Channel Amplifier • 50 watts x 4 chan. @ 4 Ohm • 100 watts x 4 chan. @ 2 Ohm • 200 watts x 4 chan. @ 1 Ohm • preamp inputs and outputs • CEA-2006 compliant

800 watt Power Series 4-Channel Amplifier • 50 watts x 4 chan. @ 4 Ohm • 100 watts x 4 chan. @ 2 Ohm • 200 watts x 4 chan. @ 1 Ohm • preamp inputs and outputs • CEA-2006 compliant

Kenwood KACM3004 OPEN BOX COMPLETE

600W Class D 4-Channel Compact Digital Car/Marine Certified Amplifier

KAC-M3004 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Kenwood KACM3004 OPEN BOX COMPLETE

600W Class D 4-Channel Compact Digital Car/Marine Certified Amplifier

Item has been previously installed and wires cut
• RMS: 50W x 4 @ 4 ohm, 75W x 4 @ 2 ohm &bull, 150W x 2 Bridged @ 4 Ohm ; Total Peak Power: 600W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Variable Bass Boost: 0 to +12 dB bass boost at 50 Hz
• Lo-Level (RCA) and Speaker-level (high-level) inputs
• Dimensions: 6-1/2"W x 4"D x 1-13/16"H

Item has been previously installed and wires cut
• RMS: 50W x 4 @ 4 ohm, 75W x 4 @ 2 ohm &bull, 150W x 2 Bridged @ 4 Ohm ; Total Peak Power: 600W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Variable Bass Boost: 0 to +12 dB bass boost at 50 Hz
• Lo-Level (RCA) and Speaker-level (high-level) inputs
• Dimensions: 6-1/2"W x 4"D x 1-13/16"H

Kenwood KAC-8405 Open Box

(Open Box) 720W Max, 4-Channel Performance Series Amplifier

KAC-8405 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Kenwood KAC-8405 Open Box

(Open Box) 720W Max, 4-Channel Performance Series Amplifier

GUARANTEED LOWEST PRICE. CONTACT US 24/7 • 4-Channel Class AB Car Amplifier • 60W x 4 chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • 180W x 2 chan. @ 4 ohm • 720W Max • Built-in cooling fan • Short circuit, DC offset, overload, and thermal protection circuitry

GUARANTEED LOWEST PRICE. CONTACT US 24/7 • 4-Channel Class AB Car Amplifier • 60W x 4 chan. @ 4 ohm • 90W x 4 chan. @ 2 ohm • 180W x 2 chan. @ 4 ohm • 720W Max • Built-in cooling fan • Short circuit, DC offset, overload, and thermal protection circuitry

Prev 62 63 64 65 66 Next

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

    2002 Subaru Outback

    1971 Cadillac Eldorado

    2016 Mercedes-Benz E-Class

    1966 Chrysler Imperial

    1963 Pontiac LeMans

    1993 Dodge Viper

    2001 Isuzu Trooper

    1995 Eagle Summit

    1973 Jaguar XJ12

    2003 Nissan Maxima

    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

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2002 Outback
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    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
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo