4-channel Amplifiers
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Sound Ordnance M-4050
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters
- preamp inputs and outputs
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Alpine KTP-445A Power Pack
Upgrade your Alpine receiver to 45 watts RMS x 4
IN STOCK
- compact plug-and-play amplifier for Alpine in-dash receivers
- 45 watts RMS x 4 at 4 ohms
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Clarion XC1410
Compact 4-channel car amplifier 50 watts RMS x 4
OUT OF STOCK
Ship date unknown
Reserve yours today
- 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
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Sound Ordnance M-4075
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 240 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters
- preamp inputs and outputs
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MTX Terminator TN400/4
4-channel car amplifier 45 watts RMS x 4 at 4 ohms
IN STOCK
- 150 watts RMS x 2 bridged
- selectable full/high-pass/low-pass filters
- fan cooled
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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
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Rockford Fosgate Prime R300-4
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged
- fixed high-pass and variable low-pass filters
- preamp inputs
Special Offer
Free Shipping
$139.99 After $60.00 Price Break
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MTX THUNDER75.4
4-channel car amplifier 75 wattts RMS x 4
IN STOCK
- 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
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Alpine KTP-445U Power Pack
Upgrade any car radio to 45 watts RMS X 4
IN STOCK
- runs off same power circuit as receiver
- compact amplifier with universal plug for in-dash receivers
- 45 watts x 4 at 4 ohms
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Alpine MRP-F300
V-Power Series 4-channel car amplifier — 50 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged
- variable low- and high-pass filters
- selectable bass boost
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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
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Kenwood KAC-2404S
4-channel car amplifier 40 watts RMS x 4
IN STOCK
- 130 watts RMS x 2 bridged
- variable low-pass and fixed high-pass filters
- preamp and speaker-level inputs
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Sound Ordnance M-4100
4-channel car amplifier 100 watts RMS x 4
IN STOCK
- 270 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters
- preamp inputs
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MTX Road Thunder RT604
4-channel car amplifier 60 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 bridged
- variable high- and low-pass filters
- preamp and speaker-level inputs
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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
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Rockford Fosgate R250X4
Prime Series 4-channel car amplifier 40 watts RMS x 4
IN STOCK
- 125 watts RMS x 2 bridged
- variable high- and low-pass filters
- preamp and speaker-level inputs
Special Offer
Free Shipping
$169.99
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Pioneer GM-6500F
4-channel car amplifier — 60 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 bridged
- 4-channel selectable high- and low-pass filters
- preamp- and speaker-level inputs
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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
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JBL GTO-504EZ
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 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
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Kenwood KAC-8405
4-channel car amplifier 60 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 bridged
- 50-200 Hz variable high- and low-pass filters
- dual cooling fans
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Kicker 12CX300.4
4-channel car amplifier 40 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 at 4 ohms
- includes hardware for vertical mounting
- preamp and speaker-level inputs
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Rockford Prime R300X4
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged
- variable high- and low-pass filters
- preamp and speaker-level inputs
Special Offer
Free Shipping
$199.99
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Pioneer GM-D8604
4-channel car amplifier 100 watts RMS x 4
LOW STOCK
- 300 watts RMS x 2 bridged at 4 ohms
- 125 watts RMS x 4 at 1 ohm
- full-range Class D amp technology
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Kicker 11DX400.4
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 200 watts RMS x 2 bridged at 4 ohms
- variable high- and low-pass filters
- Class D amp technology
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Infinity Reference 475a
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 90 watts RMS x 4 at 2 ohms
- 180 watts RMS x 2 in bridged mode
- variable high- and low-pass filters
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JL Audio JX360/4
4-channel car amplifier 70 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 at 4 ohms
- variable high- and low-pass filter (50-200 Hz, 12 dB/octave)
- speaker-level inputs
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Lightning Audio LA-4100MINI
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged at 4 ohms
- variable high-pass filter on front channels
- variable high- and low-pass filters on rear channels
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Rockford Fosgate PBR300X4
Compact 4-channel car amplifier 75 watts RMS x 4
IN STOCK
- non-bridgeable, 4-ohm stable per channel
- preamp and speaker-level inputs
- dimensions: 6-15/16"W x 1-9/16"H x 4-5/16"D
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Rockford Fosgate Prime R400-4D
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 200 watts RMS x 2 bridged
- variable high- and low-pass filters
- preamp inputs and outputs
Special Offer
Free Shipping
$249.99 After $10.00 Price Break
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Rockford Fosgate Punch P1000X4D
4-channel car amplifier 150 watts RMS x 4
IN STOCK
- full-range Class-D amplifier design
- 500 watts RMS x 2 bridged at 4 ohms
- variable high- and low-pass filters
Special Offer
Free Shipping
$249.99 After $400.00 Price Break
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Rockford Fosgate Punch P500X4D
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- full-range Class-D amplifier design
- 250 watts RMS x 2 bridged at 4 ohms
- variable high- and low-pass filters
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Rockford Fosgate Punch P400-4 [Open Box]
4-channel car amplifier 50 watts RMS x 4
LOW STOCK
- 200 watts RMS x 2 bridged
- variable high-pass/low-pass filters
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Rockford Fosgate Punch P500-4
4-channel car amplifier 60 watts RMS x 4
IN STOCK
- Class-AB amplifier design
- 250 watts RMS x 2 bridged
- variable high- and low-pass filters
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Kenwood Excelon X450-4
4-channel car amplifier 60 watts RMS x 2 at 4 ohms + 100 watts RMS x 2 at 4 ohms
IN STOCK
- 75 watts RMS x 2 at 2 ohms + 300 watts RMS x 1 bridged at 4 ohms
- variable high- and low-pass filters
- preamp inputs
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Kicker 40KX400.4
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 200 watts RMS x 2 bridged at 4 ohms
- preaamp and speaker-level inputs
- variable high- and low-pass filters
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Alpine MRX-F35
4-channel car amplifier 55 watts RMS x 4
IN STOCK
- 170 watts RMS x 2 bridged
- Class-D design
- preamp and speaker-level inputs
Special Offer
Free Shipping
$299.99
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JBL GTO-804EZ
4-channel car amplifier 80 watts RMS x 4
IN STOCK
- 200 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
$299.99
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Kenwood Excelon XR400-4
4-channel car amplifier 75 watts RMS x 4
OUT OF STOCK
Expected: 6/10/2013
Reserve yours today
- variable high- and low-pass filters (50-200 Hz; 2.5K-10k Hz, 12 dB/octave)
- 200 watts RMS x 2 at 4 ohms in bridged mode
- Class-D design
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Kicker IX500.4 [Scratch & Dent]
4-channel car amplifier 75 watts RMS x 4
LOW STOCK
- 250 watts RMS x 2 bridged
- full-range Class D design
- variable high- and low-pass filters
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Alpine MRX-F65
4-channel car amplifier 110 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged
- Class-D design
- preamp and speaker-level inputs
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Kenwood Excelon XR-4S
4-channel car amplifier 120 watts RMS x 4 at 4 ohms
IN STOCK
- variable high- and low-pass filters (50-200 Hz; 2.5K-10k Hz, 12 dB/octave)
- 300 watts RMS x 2 in bridged mode
- Class-D design
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Kicker 11ZX650.4
4-channel car amplifier 120 watts RMS x 4
IN STOCK
- 325 watts RMS x 2 bridged at 4 ohms
- preamp and speaker-level inputs
- variable high- and low-pass filters (50-200 Hz at 12 dB/octave)
Special Offer
$349.99 After $50.00 Price Break
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Rockford Punch P400X4
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 200 watts RMS x 2 at 4 ohms
- C.L.E.A.N. gain system includes setup CD and clip lights
- variable PEQ2 bass/treble boost
Special Offer
Free Shipping
$349.99
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Sony XM-GS400
4-channel car amplifier 70 watts RMS x 4
LOW STOCK
- 160 watts RMS x 2 bridged
- separate variable high- and low-pass filters for front and rear channels
- preamp and speaker-level inputs
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Helix Blue B FOUR
4-channel car amplifier 60 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 at 4 ohms
- speaker-level inputs
- Class A/B design
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Kicker 11IX500.4
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 250 watts RMS x 2 bridged at 4 ohms
- full-range Class D design
- variable high- and low-pass filters
Special Offer
Free Shipping
$399.99 After $50.00 Price Break
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JL Audio XD400/4
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 200 watts RMS x 2 bridged at 4 ohms
- preamp and speaker-level inputs
- variable high- and low-pass filters (50-500 Hz, 12 dB/octave)
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Focal FPP 4100
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 240 watts RMS x 2 at 4 ohms
- variable low- and high-pass filters
- speaker-level and preamp inputs
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Infinity Kappa Four
4-channel amplifier 125 watts RMS x 4
LOW STOCK
- 300 watts RMS x 2 in bridged mode
- variable high-pass/low-pass filters
- preamp and speaker-level inputs
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Rockford Punch P600X4
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 300 watts RMS x 2 at 4 ohms
- C.L.E.A.N. gain system includes setup CD and clip lights
- variable PEQ2 bass/treble boost
Special Offer
Free Shipping
$449.99
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JBL MS-A1004 [Open Box]
4-channel car amplifier 100 watts RMS x 4
IN STOCK
- digital signal processing
- speaker-level inputs
- preamp inputs and outputs
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Alpine PDX-F4
4-channel car amplifier 100 watts RMS x 4
IN STOCK
- 200 watts RMS x 2 bridged
- Class-D design
- stackable installation design with front-mounted controls
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Pioneer Stage 4 PRS-D4200F
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 300 watts RMS x 2 bridged
- variable high- and low-pass filters
- 1-year warranty
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JL Audio Slash 300/4v3
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 at 3 to 8 ohms
- preamp and speaker-level inputs
- variable high- and low-pass filters (50-5000 Hz, 12 or 24 dB/octave)
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Rockford Fosgate Power T600-4
4-channel car amplifier 100 watts x 4 (Standard)
IN STOCK
- 300 watts RMS x 2 bridged
- variable high-pass/low-pass filters
- preamp outputs
Special Offer
Free Shipping
$599.99
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Alpine PDX-F6
4-channel car amplifier 150 watts RMS x 4
IN STOCK
- 300 watts RMS x 2 bridged
- Class-D design
- stackable installation design with front-mounted controls
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Helix E400
Esprit Series 4-channel car amplifier 110 watts RMS x 4
LOW STOCK
- preamp and speaker-level inputs
- 320 watts RMS x 2 at 4 ohms
- dual triode vacuum tube driver stage
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JL Audio HD Series HD600/4
4-channel amplifier 150 watts RMS x 4
IN STOCK
- 150 watts RMS x 4 (rated power from 1.5 to 4 ohms)
- speaker- and preamp-level inputs
- variable high and low pass filter (50-500 Hz, 12 or 24dB/octave)
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Rockford Fosgate Power T800-4AD
4-channel car amplifier 150 watts RMS x 4
LOW STOCK
- 400 watts RMS x 2 bridged at 2 ohms
- variable high- and low-pass filters
- preamp inputs
Special Offer
Free Shipping
$799.99
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Focal FPS 4160
4-channel car amplifier 120 watts RMS x 4
LOW STOCK
- 380 watts RMS x 2 in bridged mode
- variable low-, high-, and band-pass filters
- preamp inputs
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Helix Competition A4
4-channel car amplifier 85 watts RMS x 4 (Black)
- 395 watts RMS x 2 bridged at 2 ohms
- Class A and AB amp technology
- black trim
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Pioneer Stage 4 PRS-A900
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 100 watts RMS x 2 bridged
- preamp inputs and outputs
- proprietary power supply capacitors
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Brax X2400.2
4-channel car amplifier 110 watts RMS x 4 (Black)
- 400 watts RMS x 2 at 4 ohms
- 24-karat gold-plated RCA input, power, and speaker connections
- double-sided circuit boards with silver-soldered components
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Brax X2400.2
4-channel car amplifier 110 watts RMS x 4 (Silver)
- 400 watts RMS x 2 at 4 ohms
- 24-karat gold-plated RCA input, power, and speaker connections
- double-sided circuit boards with silver-soldered components
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Brax NOX4B
4-channel car amplifier 105 watts RMS x 4
- 380 watts RMS x 2 bridged at 4 ohms
- 24-karat gold-plated RCA input, power, and speaker connections
- hand-selected and matched transistors
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Brax NOX4BDSP
4-channel car amplifier with built-in programmable DSP 100 watts RMS x 4
- 340 watts RMS x 2 bridged at 4 ohms
- DSP settings and adjustments made via laptop or PC through USB port
- 30-band graphic EQ on every channel
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Brax Matrix MX-4B
4-channel car amplifier 280 watts RMS x 4
- 560 watts RMS x 2 at 2 to 4 ohms
- 24-karat gold-plated RCA input, power, and speaker connections
- hand-selected and matched transistors
Car Amplifier Shopping Guide If you want your music to be loud, amplifiers are definitely part of the picture. But an amp can do much more than just get other people's attention.
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.


































































