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

4-Channel Amplifiers

Filters
Like New & Used ✕
Clear Filters
Reset Done
Product Type
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.
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
Like New & Used,
Availability

Shop the Category

filter-icon Filters & Sort
Limited time!

NVX VAD10004v1 Version 1 (Like New (Open Box))

1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

LS-VAD10004v1 big
Go to item page Right Arrow Icon of Right Arrow

NVX VAD10004v1 Version 1 (Like New (Open Box))

1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
3
List price $349.99
-34% $229.99

In stock

Add to Cart
Available Deal
LS-VAD10004v1 main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT44

NVX XKIT44

$119.99

$83.99

$36 Savings!

Add to cart

Sundown Audio SAEv4-150.4 (Like New (Open Box))

900W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-150.4)

SAEv4-150.4 big
Go to item page Right Arrow Icon of Right Arrow

Sundown Audio SAEv4-150.4 (Like New (Open Box))

900W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-150.4)

• 150 watts x 4 channel @ 4 ohm
• 225 watts x 4 channel @ 2 ohm
• Bridged: 450 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $563.99
-29% $399.49

In stock

Only 1 Left!

Add to Cart

• 150 watts x 4 channel @ 4 ohm
• 225 watts x 4 channel @ 2 ohm
• Bridged: 450 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

NVX VADM4 Version 2 (VADM4v2) (Open Box, Great)

500W RMS V-Series Micro Full-Range Class D 4-Channel Amplifier Car/Marine/Powersports Amplifier

VADM4v2 big
Go to item page Right Arrow Icon of Right Arrow

NVX VADM4 Version 2 (VADM4v2) (Open Box, Great)

500W RMS V-Series Micro Full-Range Class D 4-Channel Amplifier Car/Marine/Powersports Amplifier

• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
1
List price $237.99
-43% $136.49

In stock

Add to Cart

Kenwood eXcelon X303-4 (Like New (Open Box))

600W Peak (300W RMS) Class D eXcelon Series 4 Channel Car Amplifier

X303-4 big
Go to item page Right Arrow Icon of Right Arrow

Kenwood eXcelon X303-4 (Like New (Open Box))

600W Peak (300W RMS) Class D eXcelon Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 75 watts x 4 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $400.00
-36% $254.99

In stock

Only 1 Left!

Add to Cart

• 50 watts x 4 channel @ 4 ohm
• 75 watts x 4 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel Amplifier

MTX Thunder TH400.4 (Open Box, Great)

400W RMS Class D Thunder Series 4 Channel Car Amplifier

TH4004 big
Go to item page Right Arrow Icon of Right Arrow

MTX Thunder TH400.4 (Open Box, Great)

400W RMS Class D Thunder Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $479.95
-37% $300.97

In stock

Only 1 Left!

Add to Cart

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

Infinity DSP4425 - Open Box, Great

4-channel Class A/B Amplifier Design, with 2-channel pre-amp outputs & Digital Signal Processing

DSP4425 big
Go to item page Right Arrow Icon of Right Arrow

Infinity DSP4425 - Open Box, Great

4-channel Class A/B Amplifier Design, with 2-channel pre-amp outputs & Digital Signal Processing

• 25 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 200 Watts

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $369.95
-39% $223.96

In stock

Add to Cart

• 25 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 200 Watts

Rockford Fosgate Power T400-4 (Open Box, Great)

400W RMS Class AB Power Series 4 Channel Car Amplifier

T400-4 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T400-4 (Open Box, Great)

400W RMS Class AB Power Series 4 Channel Car Amplifier

• 60 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
31
List price $439.99
-15% $373.99

In stock

Add to Cart

• 60 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

NVX VAD10004 (Open Box, Great)

1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

VAD10004v2 big
Go to item page Right Arrow Icon of Right Arrow

NVX VAD10004 (Open Box, Great)

1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $349.99
-34% $229.99

In stock

Only 1 Left!

Add to Cart

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

NVX VAD10004 (Like New (Open Box))

1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

VAD10004v2 big
Go to item page Right Arrow Icon of Right Arrow

NVX VAD10004 (Like New (Open Box))

1000W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $349.99
-31% $242.24

In stock

Only 1 Left!

Add to Cart
Limited time!

Belva BXA6404 (Open Box, Good)

640W Peak BX-Series Class A/B 4-Channel Car Audio Amplifier

BXA6404 big
Go to item page Right Arrow Icon of Right Arrow

Belva BXA6404 (Open Box, Good)

640W Peak BX-Series Class A/B 4-Channel Car Audio Amplifier

• 80 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total Peak Power: 640 watts
• Class A/B 2 ohm Stable 4-Channel-Channel

Save 30% off an NVX XKIT84 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
2
List price $199.99
-70% $59.99

In stock

Only 1 Left!

Add to Cart
Available Deal
BXA6404 main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $300 discount on Save 30% off an NVX Amp Kit!

NVX XKIT84

NVX XKIT84

$79.99

$55.99

$24 Savings!

Add to cart

• 80 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total Peak Power: 640 watts
• Class A/B 2 ohm Stable 4-Channel-Channel

JL Audio JD400/4 (Open Box, Great)

400W RMS Class D JD Series 4 Channel Car Amplifier

JD400/4 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio JD400/4 (Open Box, Great)

400W RMS Class D JD Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
34
List price $299.99
-15% $254.99

In stock

Add to Cart

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

JL Audio RD400/4 (Open Box, Great)

400W RMS Class D RD Series 4 Channel Car Amplifier

RD400/4 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio RD400/4 (Open Box, Great)

400W RMS Class D RD Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
28
List price $379.99
-15% $322.99

In stock

Add to Cart

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Limited time!

Cerwin Vega B54 (Like New (Open Box))

1200W Peak (600W RMS) Class D Stealth Bomber Series 4 Channel Car Amplifier

B54 big
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega B54 (Like New (Open Box))

1200W Peak (600W RMS) Class D Stealth Bomber Series 4 Channel Car Amplifier

• 80 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT84 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $467.99
-17% $389.99

In stock

Only 1 Left!

Add to Cart
Available Deal
B54 main
Offer may end without notice
Continue Shopping Continue to checkout
Eligible items

Shop items below for 30% off up to $300 discount on Save 30% off an NVX Amp Kit!

NVX XKIT84

NVX XKIT84

$79.99

$55.99

$24 Savings!

Add to cart

JL Audio XDM400/4 (Open Box, Great)

400W RMS XDM Series Class D 4 Channel Car/Marine Amplifier

XDM400/4 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio XDM400/4 (Open Box, Great)

400W RMS XDM Series Class D 4 Channel Car/Marine Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $679.99
-20% $543.99

In stock

Add to Cart

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Rockford Fosgate R2-300X4 (Open Box, Great)

300W RMS Class D Prime Series 4 Channel Car Amplifier

R2-300X4 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate R2-300X4 (Open Box, Great)

300W RMS Class D Prime Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 75 watts x 4 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
5
List price $309.99
-15% $263.49

In stock

Add to Cart

• 50 watts x 4 channel @ 4 ohm
• 75 watts x 4 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Lowest price in 30 days

Rockford Fosgate Punch P400X4 (Open Box, Great)

400W RMS Class AB Punch Series 4 Channel Car Amplifier

P400X4 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch P400X4 (Open Box, Great)

400W RMS Class AB Punch Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
20
List price $369.99
-23% $286.16

In stock

Add to Cart

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

Rockford Fosgate Prime R2-500X4 (Open Box, Great)

500W RMS Class D Prime Series 4 Channel Car Amplifier

R2-500X4 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Prime R2-500X4 (Open Box, Great)

500W RMS Class D Prime Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
10
List price $359.99
-15% $305.99

In stock

Add to Cart

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

DS18 SXE-4000.4D/RD (Open Box, Great)

4000W Peak (1500W RMS) Class D SXE Series 4-Channel Car Amplifier

SXE-4000.4D/RD big
Go to item page Right Arrow Icon of Right Arrow

DS18 SXE-4000.4D/RD (Open Box, Great)

4000W Peak (1500W RMS) Class D SXE Series 4-Channel Car Amplifier

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class Stable -Channel Amplifier (Red)

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $341.95
-20% $273.00

In stock

Add to Cart

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class Stable -Channel Amplifier (Red)

JL Audio HD600/4 (Open Box, Great)

600W RMS Class D HD Series 4 Channel Car Amplifier

HD600/4 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio HD600/4 (Open Box, Great)

600W RMS Class D HD Series 4 Channel Car Amplifier

• 150 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 1.5 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
17
List price $1149.99
-15% $977.49

In stock

Add to Cart

• 150 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 1.5 ohm Stable 4-Channel Amplifier

Lowest price in 30 days

Rockford Fosgate Punch P600X4 (Open Box, Great)

600W RMS Class AB Punch Series 4 Channel Car Amplifier

P600X4 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch P600X4 (Open Box, Great)

600W RMS Class AB Punch Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
11
List price $509.99
-21% $401.66

In stock

Add to Cart

• 75 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

DS18 G3600.4D (Open Box - Great)

3600W Peak (1680W RMS) Class D Gen-X Series 4-Channel Car Amplifier

G3600.4D big
Go to item page Right Arrow Icon of Right Arrow

DS18 G3600.4D (Open Box - Great)

3600W Peak (1680W RMS) Class D Gen-X Series 4-Channel Car Amplifier

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class Stable Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $347.95
-7% $323.59

In stock

Add to Cart

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class Stable Amplifier

Rockford Fosgate Power T1000-4AD (Open Box, Great)

1000W RMS Class AD Power Series 4 Channel Car Amplifier

T1000-4AD big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T1000-4AD (Open Box, Great)

1000W RMS Class AD Power Series 4 Channel Car Amplifier

• 250 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class AD 1 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
13
List price $1099.99
-15% $934.99

In stock

Add to Cart

• 250 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class AD 1 ohm Stable 4-Channel Amplifier

DS18 SXE-2000.4D/RD (Open Box, Great)

2000W Peak (640W RMS) Class D SXE Series 4 Channel Car Amplifier

SXE-2000.4D/RD big
Go to item page Right Arrow Icon of Right Arrow

DS18 SXE-2000.4D/RD (Open Box, Great)

2000W Peak (640W RMS) Class D SXE Series 4 Channel Car Amplifier

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class Stable Amplifier
• Red Brushed Aluminum Body Color

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $21.60 in rewards to spend later

List price $239.95
-10% $215.97

In stock

Add to Cart

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class Stable Amplifier
• Red Brushed Aluminum Body Color

Rockford Fosgate Power T400X4ad (Open Box, Great)

400W RMS Class AD Power Series 4 Channel Car Amplifier

T400X4AD big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T400X4ad (Open Box, Great)

400W RMS Class AD Power Series 4 Channel Car Amplifier

• 100 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class AD 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
3
List price $569.99
-15% $484.49

In stock

Add to Cart

• 100 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class AD 2 ohm Stable 4-Channel Amplifier

Lowest price in 30 days

Rockford Fosgate PBR400X4D (Open Box, Great)

400W RMS Class D Punch Series 4 Channel Car Amplifier

PBR400X4D big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate PBR400X4D (Open Box, Great)

400W RMS Class D Punch Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
3
List price $309.99
-23% $237.99

In stock

Add to Cart

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

JL Audio XDM400/4 (Open Box, Great)

400W RMS Class D XDM Series 4 Channel Car and Marine Amplifier

XDM400/4 big
Go to item page Right Arrow Icon of Right Arrow

JL Audio XDM400/4 (Open Box, Great)

400W RMS Class D XDM Series 4 Channel Car and Marine Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $679.99
-15% $577.99

In stock

Add to Cart

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Cerwin Vega B54 Amplifier - Open Box, Great

1200W 4-Channel Bomber Series Class D Amplifier

B54 big
Go to item page Right Arrow Icon of Right Arrow

Cerwin Vega B54 Amplifier - Open Box, Great

1200W 4-Channel Bomber Series Class D Amplifier

• RMS: 80 Watts x 4 @ 4 ohm, 150 Watts x 4 @ 2 ohm, Bridged: 300 Watts x 2 @ 4 ohm
• Total Peak Power: 1000 Watts
• Class D IR Chipset with DirectFET Power Mosfet Output
• Wired remote bass level control included
• Ultra Compact High Density Aluminum Alloy Chassis
• Dimensions: 4.02" W x 8.70" L x 1.40" H

shipping truck icon Free shipping in USA. Provide zip for delivery date.
4
List price $431.99
-25% $323.99

In stock

Add to Cart

JL Audio VX400/4i (Open Box, Great)

400W RMS Class D VXi Series 4 Channel Car Amplifier

VX400/4i big
Go to item page Right Arrow Icon of Right Arrow

JL Audio VX400/4i (Open Box, Great)

400W RMS Class D VXi Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
1
List price $1249.99
-15% $1,062.49

Available

Add to Cart

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

NVX NDA6004 (Open Box, Great)

1200W Peak (600W RMS) N-Series Class-D 4-Channel Amplifier

NDA6004 big
Go to item page Right Arrow Icon of Right Arrow

NVX NDA6004 (Open Box, Great)

1200W Peak (600W RMS) N-Series Class-D 4-Channel Amplifier

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

shipping truck icon Free shipping in USA. Provide zip for delivery date.
1
List price $215.99
-42% $125.99

In stock

Only 1 Left!

Add to Cart

DS18 SMD-300.4AB (Open Box, Great)

1200W RMS Class AB SMD Series 4 Channel Car Amplifier with Bass Remote

SMD-300.4AB big Out of stock
Go to item page Right Arrow Icon of Right Arrow

DS18 SMD-300.4AB (Open Box, Great)

1200W RMS Class AB SMD Series 4 Channel Car Amplifier with Bass Remote

• 200 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• Bridged: 600 watts x 2 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

VIP Star Icon

VIP Product Get $54.62 in rewards to spend later

1
List price $574.95
-5% $546.24
Add to Cart

• 200 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• Bridged: 600 watts x 2 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

 

Items per page: 20 40 60

    Clear all

    FAQ Frequently asked questions in 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.

    All About 4-Channel Amplifiers

    Car Audio 4-Channel Amplifier

    At the heart of the best-sounding audio system you've ever heard in a vehicle is a powerful amplifier that surely packs a punch. A 4-channel amplifier is the centerpiece that gives life to speakers, subwoofers, or even both for a surround sound experience that's always meant to be a memorable ride. When it comes to power, a 4-channel amplifier beats the amp inside a dash-mounted receiver any day.

    Showcasing multi-channels, this amplifier is originally designed to amp up a 4-speaker system, such as a couple of pairs of full-range speakers. Bridging 2 channels of this amplifier allows you to power a subwoofer, while the other channels remain connected to the speakers, turning your vehicle into one mighty boombox: wielding crystal highs, stunning lows, and carrying an ambiance that fully immerses you. A 4-channel amplifier is a priority upgrade for your system if you want to combat the loud revving noises of your vehicle's powerful engine or cancel out the audio distortion from your music. Amplifiers like these are guaranteed to provide you with true high fidelity, bass boost, and a new love for your audio system.

    Our massive catalog of premium 4-channel amplifiers with classifications including Class AB which features higher efficiency, less distortions, and is the most commonly used type of audio power amplifier design; and Class-D amplifiers which are known to be highly efficient with power and delivering sound signals. Sonic Electronix certainly contains the ideal amp for you - from Pioneer, JVC, NVX, Belva, Kicker, Rockford Fosgate, Cerwin-Vega, and more.

    Sonic Electronix Learning Center: Amplifier Classes

    If you're on the hunt for the best quality 4-channel amplifiers, you've come to the right place. Our extensive selection guarantees that you'll find only the finest products to elevate your car audio experience. Whether you're a music enthusiast or a casual listener, our range of high-performance 4-channel amplifiers will exceed your expectations.

    4-channel amplifiers are a versatile and essential component in upgrading your car audio system. As the name implies, a 4-channel amplifier has four output channels, which allows you to power your front and rear speakers separately. This configuration is perfect for car owners who seek a balanced and immersive audio experience, with crystal-clear sound for both the front and rear passengers.

    One of the primary advantages of a 4-channel amplifier is its ability to distribute power efficiently to all four speakers, ensuring that each speaker receives optimal power for enhanced sound clarity and precision. This results in a well-balanced audio experience, where every note and beat comes to life, providing an immersive and enjoyable driving journey.

    Additionally, 4-channel amplifiers often feature various configurations, including bridgeable options that allow you to combine two channels to power a more potent subwoofer or component speakers. This flexibility offers you the freedom to customize your car audio system according to your preferences, achieving the perfect balance between your front and rear speakers or adding a dedicated subwoofer for deep bass.

    At Sonic Electronix, we are committed to helping you find the best 4-channel amplifiers that cater to your specific needs. Our team of car audio experts is ready to provide exceptional service and assistance throughout your shopping experience. If you have any questions or need personalized advice on selecting the ideal amplifier for your car audio system, don't hesitate to reach out to us at 1-502-200-8010. Our friendly staff will be delighted to address your inquiries and ensure you find the perfect 4-channel amplifier to elevate your car audio experience.

    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

    1989 Dodge B250

    2002 Chevrolet Express 2500

    1966 BMW 2000cs

    2024 Buick Envision

    1988 Dodge Mini Ram

    2000 BMW X5

    2001 Lotus Esprit

    1988 Eagle Premier

    1983 Buick Regal

    1957 Chrysler Windsor

    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 1966 2000cs
    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.
    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