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Vehicle Fit Guide — We check fitment of speakers and radios. We can help you find what fits. Choose your car by clicking here.

Minimize the chance of distortion at high volumes by installing a 4 channel amplifier on your door speakers. Our 4 channel amps are highly configurable. You can tune your system with ease with the built-in crossovers and other adjustable settings. Make your speakers soar with more power.

16 products

Free Shipping to Virginia

$1,199.99

Free Shipping to Virginia

$1,099.99

Free Shipping to Virginia

$999.99

Regular Price: $1,450.00

Save: $450.01 (31%)

Free Shipping to Virginia

$629.99

Rockford Fosgate

Power 600 Watt 4-Channel Amplifier

T600-4

Free Shipping to Virginia

$599.99

Regular Price: $860.00

Save: $260.01 (30%)

Free Shipping to Virginia

$519.99

Regular Price: $590.00

Save: $70.01 (12%)

Rockford Fosgate

4 Channel Amp

P600X4

Free Shipping to Virginia

$459.99

Regular Price: $530.00

Save: $70.01 (13%)

Rockford Fosgate

400 Watt 4-Channel Amplifier

T400-4

Free Shipping to Virginia

$399.99

Regular Price: $580.00

Save: $180.01 (31%)

Free Shipping to Virginia

$399.99

Free Shipping to Virginia

$379.99

Regular Price: $450.00

Save: $70.01 (16%)

Free Shipping to Virginia

$279.99

Regular Price: $340.00

Save: $60.01 (18%)

Focal

4 Channel Amp

AP4340

Free Shipping to Virginia

$249.99

Regular Price: $320.00

Save: $70.01 (22%)

Alpine

Universal Power Pack

KTP-445U

Free Shipping to Virginia

$219.95

Regular Price: $250.00

Save: $30.05 (12%)

Free Shipping to Virginia

$219.95

Regular Price: $250.00

Save: $30.05 (12%)

Kenwood

4 Channel Amplifier

X302-4

Free Shipping to Virginia

$199.99

Regular Price: $300.00

Save: $100.01 (33%)

Free Shipping to Virginia

$99.99

Regular Price: $200.00

Save: $100.01 (50%)