1.888.955.6000
 
 

Free Shipping on Everything

60-Day Money-Back Guarantee  |  Lifetime Tech Support
  • Get everything right and save time
  • Contact us with your Connect ID:
  • 4440804721
reset

Filter by

Brand

Price Range

General Features

More Information
Some amps include circuitry that allows you to boost the bass output, ranging from a knob or button that provides a set amount of boost, to a built-in parametric equalizer with many possible configurations and adjustments.
More Information
If an amp generates a large amount of heat, a cooling fan can regulate the temperature to prevent the amp from overheating.
More Information
Preamp outputs are RCA outputs that let you pass the preamp audio signal from one amp to additional amplifiers.
More Information
Useful if you're adding an amp to a factory radio, or don't have enough preamp outputs on your aftermarket receiver. Speaker Level Input Types: Harness, Speaker Terminal, RCA.

Customer Rating

In Stock

Crutchfield OMC logo
We don't check the items below for fit or compatibility.

4-channel Amplifiers

Sort by:
Showing:1 - 20 of 67
View page: 1 2 3 4 »
Items per page:
  • Sound Ordnance™ M-4050

    4-channel car amplifier — 50 watts RMS x 4

    IN STOCK

    24 people say 

    • 180 watts RMS x 2 at 4 ohms bridged
    • variable high- and low-pass filters
    • preamp inputs and outputs

    Free Shipping

    $109.99 After $30.00 Price Break

  • Alpine KTP-445A Power Pack

    Upgrade your Alpine receiver to 45 watts RMS x 4

    IN STOCK

    1 person says 

    • compact plug-and-play amplifier for Alpine in-dash receivers
    • 45 watts RMS x 4 at 4 ohms

    Free Shipping

    $129.99

  • Clarion XC1410  New

    Compact 4-channel car amplifier — 50 watts RMS x 4

    IN STOCK

    • 75 watts RMS x 4 at 2 ohms (non-bridgable)
    • preamp and speaker-level inputs
    • dimensions: 8-1/4"W x 1-9/16"H x 2-3/4"D

    Free Shipping

    $129.99

  • Sound Ordnance™ M-4075

    4-channel car amplifier — 75 watts RMS x 4

    IN STOCK

    42 people say 

    • 240 watts RMS x 2 at 4 ohms bridged
    • variable high- and low-pass filters
    • preamp inputs and outputs

    Free Shipping

    $129.99 After $20.00 Price Break

  • MTX Terminator TN400/4

    4-channel car amplifier — 45 watts RMS x 4 at 4 ohms

    IN STOCK

    5 people say 

    • 150 watts RMS x 2 bridged
    • selectable full/high-pass/low-pass filters
    • fan cooled

    Free Shipping

    $132.99

  • Kicker 11DX200.4

    4-channel car amplifier — 25 watts RMS x 4

    IN STOCK

    • 100 watts RMS x 2 bridged at 4 ohms
    • selectable high- and low-pass filters
    • Class D amp technology

    Free Shipping

    $139.99 After $10.00 Price Break

  • Rockford Fosgate Prime R300-4

    4-channel car amplifier — 50 watts RMS x 4

    IN STOCK

    8 people say 

    • 150 watts RMS x 2 bridged
    • fixed high-pass and variable low-pass filters
    • preamp inputs

    Free Shipping

    $139.99 After $60.00 Price Break

  • MTX THUNDER75.4

    4-channel car amplifier — 75 wattts RMS x 4

    IN STOCK

    3 people say 

    • 200 watts RMS x 2 bridged at 4 ohms
    • variable high-pass filter on front channels
    • variable high- and low-pass filters on rear channels

    Free Shipping

    $145.99

  • Alpine KTP-445U Power Pack

    Upgrade any car radio to 45 watts RMS X 4

    IN STOCK

    62 people say 

    • runs off same power circuit as receiver
    • compact amplifier with universal plug for in-dash receivers
    • 45 watts x 4 at 4 ohms

    Free Shipping

    $149.99

  • Alpine MRP-F300

    V-Power Series 4-channel car amplifier — 50 watts RMS x 4

    IN STOCK

    72 people say 

    • 150 watts RMS x 2 bridged
    • variable low- and high-pass filters
    • selectable bass boost

    Free Shipping

    $149.99 After $50.00 Price Break

  • JVC KS-AX3204

    DRVN Series 4-channel car amplifier — 60 watts RMS x 4

    IN STOCK

    • 150 watts RMS x 2 bridged at 4 ohms
    • preamp and speaker-level inputs
    • switchable high- and low-pass filters

    Free Shipping

    $149.99

    Open Box: $134.99
  • Kenwood KAC-2404S

    4-channel car amplifier — 40 watts RMS x 4

    IN STOCK

    4 people say 

    • 130 watts RMS x 2 bridged
    • variable low-pass and fixed high-pass filters
    • preamp and speaker-level inputs

    Free Shipping

    $149.99

  • Sound Ordnance™ M-4100

    4-channel car amplifier — 100 watts RMS x 4

    IN STOCK

    25 people say 

    • 270 watts RMS x 2 at 4 ohms bridged
    • variable high- and low-pass filters
    • preamp inputs

    Free Shipping

    $159.99 After $20.00 Price Break

    Scratch & Dent: $135.99
  • MTX Road Thunder RT604

    4-channel car amplifier — 60 watts RMS x 4

    IN STOCK

    1 person says 

    • 180 watts RMS x 2 bridged
    • variable high- and low-pass filters
    • preamp and speaker-level inputs

    Free Shipping

    $169.99

  • MTX TH90.4

    TH Series 4-channel amplifier — 60 watts RMS X 4

    IN STOCK

    • 180 watts RMS x 2 bridged output at 4 ohms
    • variable high-pass/low-pass crossovers (40-400 Hz at 12 dB/octave)
    • preamp and speaker-level inputs

    Free Shipping

    $169.99 After $130.00 Price Break

  • Rockford Fosgate R250X4

    Prime Series 4-channel car amplifier — 40 watts RMS x 4

    IN STOCK

    1 person says 

    • 125 watts RMS x 2 bridged
    • variable high- and low-pass filters
    • preamp and speaker-level inputs
  • Pioneer GM-6500F

    4-channel car amplifier — 60 watts RMS x 4

    IN STOCK

    3 people say 

    • 180 watts RMS x 2 bridged
    • 4-channel selectable high- and low-pass filters
    • preamp- and speaker-level inputs

    Free Shipping

    $179.99

  • Alpine MRV-F300

    4-channel car amplifier — 50 watts RMS x 4

    IN STOCK

    • 150 watts RMS x 2
    • variable low- and high-pass filters
    • selectable bass boost

    Free Shipping

    $199.99

    Open Box: $179.99
  • JBL GTO-504EZ

    4-channel car amplifier — 50 watts RMS x 4

    IN STOCK

    2 people say 

    • 150 watts RMS x 2 bridged at 4 ohms
    • Simple Setup System with test tone CD for perfect gain setting
    • preamp outputs and speaker-level inputs

    Free Shipping

    $199.99

  • Kenwood KAC-8405

    4-channel car amplifier — 60 watts RMS x 4

    IN STOCK

    13 people say 

    • 180 watts RMS x 2 bridged
    • 50-200 Hz variable high- and low-pass filters
    • dual cooling fans

    Free Shipping

    $199.99

    Open Box: $179.99
View page: 1 2 3 4 »

Video: Car Amplifier PowerWe describe the basics of deciding how much power an amplifier should have when you're trying to match it to your speakers or subwoofers.

Video: Sound Ordnance AmplifiersMake your music sound lively and vital with a Sound Ordnance amplifier. Watch this Crutchfield video for a quick overview of what these amplifiers have to offer.