Expert Service 1-877-289-7664 [Hours]

Presidents' Day Clearance
Find powerful 4 channel amps for name brand manufacturers such as Kicker, JVC, Pioneer and more. Four channel amplifiers allow you to have more installation options.
Narrow Your Results

Your Filters

Clear All
Amplifier Class
AB
Bass/Gain Remote
No
Price range:
$42.99 $631.99
$
to
$

Number of Channels:

Minimum Impedance Unbridged:

Sonic Certified Amplifier:

CEA-2006 Compliant:

Amp Bluetooth Connectivity:

4-Channel Amplifiers Class-AB Car Amplifiers, Bass/Gain Remote: No

600W 4 Channel Class AB Car or Marine Ready Amplifier

• 4 ohms: 60 watts x 4 chan.
• 2 ohms: 70 watts x 4 chan.
• Rear Channel Bridged, 4 ohms: 160 watts x 1 chan.
• CEA-2006 Compliant Amplifier
• OTL Output Transformerless Circuit Pulse Power Supply
• 4/3 or 2 channel operation
• Speaker-level (high-level) inputs
• Gold plated speaker and power terminals

25% Off of XKIT84 OFC Amplifier Install Kit with Purchase!

$129.95

IN STOCK

1000W Max 4-Channel Class A/B PDX Series Car Amplifier

Power One Series 4-Channel Class A/B Car Amplifier • 1000W Max • 500W x 2-Chan @ 1 Ohm • SEPP Analog Amplifier • Variable Bass Boost • Speaker-Level Inputs • Preamp RCA Outputs • 3-Way System Protection Circuitry

50% Off of XKIT84 OFC Amplifier Install Kit with Purchase!

$59.99

IN STOCK

1600W 4-Channel WCC Series Full Range Amplifier (Same as MB Quart OA800.4)

• 100W x 4-Chan. @ 4 ohms
• 200W x 4-Chan. @ 2 ohms
• 400W x 2 Chan. @ 4 ohms
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

Get 20% of a 7-Band Graphic Equalizer!

$99.99

IN STOCK

640 Watt 4 Channel Brutus Series Class AB Amplifier

• RMS Power: 80W x 4 @ 4 ohms, 160W x 2 @ 2 ohms
• Total Peak Power: 640W
• Variable High and Low Pass Filters
• Dimensions: 9.8" W x 14.7" L x 2.4" H

25% Off of XKIT84 OFC Amplifier Install Kit with Purchase!

$116.99

IN STOCK

1000W Max 4-Channel ATA Series Class-AB Car Amplifier

• Max Power: 125W x 4 @ 4 ohms, 250W x 4 @ 2 ohms
• Total Peak Power: 1000W
• Pulse Width Modulated MOSFET power supply
• LED power (green) and protect (red) indicators
• 4/3/2 channel operation
• Preamp RCA outputs to daisy chain multiple amps

Save 25% on an 4 Gauge Amp Kit with Purchase!

$64.99

IN STOCK

1200W 4 Channel Hercules Series Amplifier

• 75 Watts RMS x 4 @ 4 ohms
• 150 Watts RMS x 4 @ 2 ohms
• 600 Watts RMS x 2 @ Bridged
• Twin Turbo Coil PS Pulse Width Modulated MOSFET power supply
• Ultra-Fi output devices

Save 50% on an OFC Amplifier Installation Kit with Purchase!

$169.99

IN STOCK

List price $429.89: 6-1/2" 2-Way GTO Series Coaxial Speakers + 4-Channel GM Series Bridgeable Class AB Car Amplifier

• 60W x 4 @ 2 ohms
• Mylar / Titanium Composite Dome Tweeter
• Mounting Depth: 2-1/16"
• Plus One Cone Material
• CEA-2006 Compliant
• Dimensions: 12-1/2"W x 8-1/2"L x 2-3/8"H

$192.75

IN STOCK

400W 4-Channel Gothic Series Class AB Car Amplifier

• 30 Watts RMS x 4 @ 4 ohms
• 40 Watts RMS x 4 @ 2 ohms
• 90 Watts RMS x 2 @ 4 ohms, Bridged
• Total Peak Power: 400 Watts
• 4, 3 or 2 channel operation
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Frequency Response: 15 - 20,000 Hz
• Signal to Noise Ration: 100dB

Save 25% on an 8 Gauge Amp Kit with Purchase!

$49.99

IN STOCK

2000W 4-Channel Ground Pounder Series A/B Class Amplifier

• RMS Power: 250W x 4 @ 4 ohms, 500W x 4 @ 2 ohms, 1000 x 2 @ 4 ohms Mono Bridged
• Total Peak Power: 2000W
• Variable Bass Boost
• Speaker Level Inputs
• 9.05"W x 13.93"L x 2.29"H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$89.99

IN STOCK

600 Watt 4 Channel Zeus Series Class AB Amplifier

• Max Power: 250W x 4 @ 4 ohms, 500W x 4 @ 2 ohms
• Total Peak Power: 2000W
• Variable Low and High Pass Filters
• Dimensions: 10" W x 12.6" L x 2.4" H

Save 25% on an 8 Gauge Amp Kit with Purchase!

$94.99

IN STOCK

2400W Anarchy Series 4-Channel Class AB MOSFET Power Amplifier with Remote Level Control

• RMS: 2 ohms: 420 watts x 4 chan.
• 2400W Max.
• Switchable Phase Shift
• Input Sensitivity Selector
• Remote Subwoofer Control
• Heavy-Duty Screw Terminals
• Chrome-Plated Connections
• Illuminated Logo

Save 25% on a 4 Gauge Amp Kit with Purchase!

$99.95

IN STOCK

1000W 4-Channel Power One Series Class AB Car Amplifier

• 1000W Max
• 250W x 4-Chan @ 2 Ohm, 125W x 4-Chan @ 4 Ohm
• SEPP Analog Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Preamp RCA Outputs
• 3-Way System Protection Circuitry

Save 25% on a 4 Gauge Amp Kit with Purchase!

$71.97

IN STOCK

840W Max, FX Series 4-Channel Amplifier

• 840W Max, FX Series 4-Channel Amplifier • 4 ohms: 80 watts x 4 chan • 2 ohms: 95 watts x 4 chan • Bridged, @ 4 ohms: 190 watts x 2 chan • S/N Ratio: 98dB • THD: 0.02%

Save 35% on a 4 Gauge Amp Kit with Purchase!

$63.99

IN STOCK

1600W Black Ice Series 4 Channel Class AB Car Amplifier

• RMS Power: 130W x 4 @ 4 ohms, 200W x 4 @ 2 ohms, 400W x 2 @ 4 ohms Bridged
• Total Peak Power: 1600W
• Variable 12dB High, Low, & Subsonic Crossovers
• Dimensions: 8.6"W x 15.50"L x 2.3"H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$104.99

IN STOCK

2100W 4-Channel Street Machine Series Class AB Amplifier

• RMS: 275W x 4 @ 4 ohms, 525W x 4 @ 2 ohms, 1050W x 2 @ 4 ohms Bridged
• Pulse Width Modulated MOSFET power supply
•Nickel plated brass connections
• Built-in Variable Low-Pass and Subsonic Filter
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation

$83.97

IN STOCK

2000W Max 4-Channel Class AB Car Amplifier

• Max Power: 250W x 4 @ 4 ohms, 500W x 2 @ 2 ohms
• Total Peak Power: 2000W
• Adjustable 12dB Crossovers
• Dimensions: 9.05" W x 12.6" L x 2.29" H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$78.97

IN STOCK

1800W 4-Channel Powerzone Series Class AB Car Amplifier

• RMS Power: 225W x 4 @ 4 ohms, 450W x 4 @ 2 ohms, 900W x 2 @ 4 ohms Bridged
• Total Peak Power: 1800W
• Rugged MOSFET Pulse Width Modulation Power Supply

$84.99

IN STOCK

360W RMS 4-Channel GM Series Bridgeable Class AB Car Amplifier

• RMS: 60W x 4 @ 4 ohms, 90W x 4 @ 2 ohms, 180W x 2 @ 4 ohm
• Total Peak Power: 760W
• CEA-2006 Compliant
• Dimensions: 13-3/4"W x 8-1/2"L x 2-1/2"H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$119.99

IN STOCK

1200W 4-Channel Powerzone Series Class A/B Car Amplifier

• 150 Watts x 4 @ 4 ohms
• 300 Watts x 4 @ 2 ohms
• 6000 Watts x 2 @ 4 ohms, Bridged
• Speaker-level (high-level) inputs
• 4, 3 or 2 channel operation
• Signal to Noise Ration: >90 dB
• Variable Bass Boost: 0 to +9 dB bass boost at 45 Hz
• Dimensions: 9.29" L x 11.02" W x 2.17" H

50% off an 8 Gauge Amp Kit with Select Amplifiers Purchase!

$80.97

IN STOCK

1600W Anarchy Series 4-Channel Class AB MOSFET Power Amplifier with Remote Level Control

• RMS: 300W x 4 @ 2 ohms
• 1600W Max.
• Switchable Phase Shift
• Input Sensitivity Selector
• Remote Subwoofer Control
• Heavy-Duty Screw Terminals
• Chrome-Plated Connections
• Illuminated Logo

Save 35% on a 4 Gauge Amp Kit with Purchase!

$84.95

IN STOCK

1200W 4-Channel Gothic Series Class AB Car Amplifier

• 4 ohms: 100 watts x 4-Chan.
• 2 ohms: 125 watts x 4-Chan.
• Bridged, 4 ohms: 250 watts x 2 chan.
• Max power output: 1200 watts

Save 25% on an 8 Gauge Amp Kit with Purchase!

$79.99

IN STOCK

1600 Watt 4-Channel Brutus (BRX) Series Super A/B Class Amplifier

• RMS: 200W x 4 @ 4 ohms, 200W x 4 @ 2 ohms, Bridged 800W x 2 @ 4 ohm
• Total RMS Power: 1600W
• Ultra-Fi MOSFETS power supply
• Heavy duty aluminum alloy heat-sink
• Illuminated Hifonics logo

Save 25% on a 4 Gauge Amp Kit with Purchase!

$194.99

IN STOCK

1500W 4-Channel Street Machine (SMA) Series Class AB Amplifier

• Max: 185W x 4 @ 4 ohms, 375W x 4 @ 2 ohms , Bridged 750W x 2 @ 4 ohms
• Total Peak Power: 1500W
• Pulse Width Modulated MOSFET power supply
• Preamp RCA outputs to daisy chain multiple amps
• High-density split-dome convection heat-sink for extreme heat dissipation

Save 50% on a 4 Gauge Amp Kit with Purchase!

$72.95

IN STOCK

2600W 4-Channel Gothic Series Class AB Car Amplifier

• 4 ohms: 215 watts x 4-Chan.
• 2 ohms: 275 watts x 4-Chan.
• Bridged, 4 ohms: 550 x 2 chan.
• Max power output: 2600 watts

Save 25% on an 8 Gauge Amp Kit with Purchase!

$119.99

IN STOCK

Only 3 Left!

1200W Max, FX Series 4-Channel Amplifier

•1200W Max, FX Series 4-Channel Amplifier • 4 ohms: 100 watts x 4 chan • 2 ohms: 125 watts x 4 chan. • S/N Ratio: 98dB • THD: 0.02%

$76.99

IN STOCK

240W RMS 4-Channel GM Series Bridgeable Class AB Car Amplifier

• RMS: 40W x 4 @ 4 ohms, 60W x 4 @ 2 ohms, 120W x 2 @ 4 ohm
• Total Peak Power: 240W
• CEA-2006 Compliant
• Dimensions: 12-1/2"W x 8-1/2"L x 2-3/8"H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$92.97

IN STOCK

1400W Max 4-Channel ATA Series Class AB Car Amplifier

• Max Power: 175W x 4 @ 4 ohms, 350W x 4 @ 2 ohms
• Total Peak Power: 1400W
• Adjustable 12dB Crossovers
• Dimensions: 11.02" L x 9.05" W x 2.29" H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$64.99

IN STOCK

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

• 250W RMS x 4-Channels @ 4 ohms
• 350W RMS x 4-Channels @ 2 ohms
• Electronic Crossover Network
• Power and Protect LED Indicators
• 3-Way Protection System Circuitry

Save 25% on a 4 Gauge Amp Kit with Purchase!

$99.97

IN STOCK

400W Punch Series 4-Channel Stereo Class AB Car Power Amplifier (P400X.4)

• 50W x 4-Chan. @ 4 ohms
• 100W x 4-Chan. @ 2 ohms
• Built In NOMAD "Real Time" Analog Computer
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

Save 25% on an RF Amp Kit and get an Extended Warranty!

$239.99

IN STOCK

1500W 4-Channel Ground Pounder Series Class A/B Car Amplifier

• RMS Power: 185W x 4 @ 4 ohms, 375W x 4 @ 2 ohms, 750 x 4 @ 4 ohms Mono Bridged
• Total Peak Power: 1500W
• Variable Bass Boost
• Speaker Level Inputs
• 9.05"W x 12.36"L x 2.29"H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$89.99

IN STOCK

1200W 4-Channel Momentum CSA Series Class AB Full Range Amplifier

• RMS: 150 x 4 @ 4 ohms, 300W x 4 @ 2 ohms, Bridged 600W x 2 @ 4 ohms
• Total Peak Power: 1200W
• High Speed MOSFET Power Supply
• Silver Pate Connectors
• Heavy Duty Aluminum Heat Sink
• 8.00" W x 10.70" L x 2.00" H

$89.23

AVAILABLE

Ships at Later Date

1100W, 4 Channel Renegade Power Amplifier

REN Series 4-Channel Class A/B Car Amplifier • 1100W Max • 275 Watts x 4 Chan. @ 2 Ohms Max • Speaker-Level (High-Level) Inputs • Preamp RCA Outputs • Variable High/Low-Pass Filter

$74.95

IN STOCK

Only 2 Left!

2000W 4-Channel Mean Machine Series Class AB Amplifier

• Max Power: 250W x 4 @ 4 ohms, 500W x 4 @ 2 ohms
• Total Peak Power: 2000W
• Fully Adjustable Pro-Design Crossovers
• Dimensions: 9.05" W x 12.6" L x 2.29" H

Save 25% on a 4 Gauge Amp Kit with Purchase!

$86.99

IN STOCK

1000W Consumer Line Series 4-Channel Class AB Amplifier

• RMS Power: 50W x 4 @ 4 ohms, 100W x 4 @ 2 ohms
• Total Peak Power: 1000W
• Adjustable High and Low Pass Crossovers
• High Quality Aluminum Heat Sink
• Dimensions: 6.9" W x 13.1" L x 2.16" H

$132.99

IN STOCK

Only 2 Left!

900W 4-Channel Gothic Series Class AB Car Amplifier

• 4 ohms: 75 watts x 4-Chan.
• 2 ohms: 95 watts x 4-Chan.
• Bridged, 4 ohms: 190 watts x 2 chan.
• Max power output: 900 watts

Save 25% on an 8 Gauge Amp Kit with Purchase!

$79.99

IN STOCK

Only 2 Left!

Power Acoustik GT4-400 400W 4-Channel Gothic Series Class AB Car Amplifier + Massive Audio DX69S 6" x 9" 2-Way DX Series Coaxial Speakers

• 30 Watts RMS x 4 @ 4 ohms
• 40 Watts RMS x 4 @ 2 ohms
• 90 Watts RMS x 2 @ 4 ohms, Bridged
• Total Peak Power: 400 Watts
• 4, 3 or 2 channel operation
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Frequency Response: 15 - 20,000 Hz
• Signal to Noise Ration: 100dB

$95.81

IN STOCK

2000W 4-Channel Reaper Series Class A/B Amplifier

• RMS: 116 x 4 @ 4 ohms, 210W x 4 @ 2 ohms, 420w x 2 @ 4ohms Bridged
• Total Peak Power: 2000W
•Military Grade PCB w/ PWM MOSFET Power Supply
• Direct Short, Thermal, & Overload Circuits Protect Ampllifier
• HSelectable Bass Boost: 0 / +6 dB / +12 dBATSINK
• Selectable crossover modes: HPF / LPF / FULL

$84.99

IN STOCK

Power Acoustik GT4-400 400W 4-Channel Gothic Series Class AB Car Amplifier + Massive Audio DX 5 5-1/4" 2-Way DX Series Coaxial Car Speakers

• 30 Watts RMS x 4 @ 4 ohms
• 40 Watts RMS x 4 @ 2 ohms
• 90 Watts RMS x 2 @ 4 ohms, Bridged
• Total Peak Power: 400 Watts
• 4, 3 or 2 channel operation
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Frequency Response: 15 - 20,000 Hz
• Signal to Noise Ration: 100dB

$94.85

IN STOCK

1600W Max FX Series 4-Channel Amplifier

• 1600W Max, FX Series 4-Channel • 4 ohms: 150 watts x 4 chan • 2 ohms: 180 watts x 4 chan • Bridged, @ 4 ohms: 360 watts x 2 cha • S/N Ratio: 98dB • THD: 0.02%

$79.99

IN STOCK

VSP65KIT 6.5" Speakers + VCW102 10" Subwoofer + H351200.4 1200W 4-Ch Hercules Series Amp+ TC6KIT-0B 1/0G OFC Kit & BBIC5 2-Ch RCA Cable

• Speakers: Peak Power: 140W
• RMS Power: 70W
• Subwoofer: RMS Power: 750W
• Amplifier: 75 Watts RMS x 4 @ 4 ohms
• 150 Watts RMS x 4 @ 2 ohms
• 600 Watts RMS x 2 @ Bridged
• 1/0 Gauge Power Amplifier Installation Kit
• 2 Channel RCA Audio Interconnect Cable

$441.99

IN STOCK

320W 4-Channel Z-Line Series Class SQ A/B Amplifier

• RMS: 40W x 4 @ 4 ohms, 80W x 4 @ 2 ohms, Bridged 160W x 2 @ 4 ohms.
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Top mounted controls for simple setup & adjustment
• Frequency Response: 15 - 45,000 Hz

FREE XKIT84 OFC Amplifier Install Kit with Purchase!

$158.99

IN STOCK

Only 3 Left!

300W RMS 4-Channel Slash v3 Series Class A/B Full-Range Amplifier

• RMS: 75W x 1 @ 4 ohms, 75W x 1 @ 2 ohms, 75W x 1 @ 1.5 ohms
• Total RMS Power: 300W
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Dual N-Channel MOSFET power supply
• Absolute Symmetry™ Class A/B Circuit
• 13.4"L x 9.25"W x 2.36"H

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

FREE $169.99 4 Gauge 4-Ch. Amp Kit with Purchase!

$539.96

IN STOCK

400W Class AB 4-Channel Thunder Series Car Amplifier

• 75W x 4-Chan. @ 4 ohms
• 100W x 4-Chan. @ 2 ohms
• 400W x 2 Chan. MAX
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Vibration and Extruded Aluminum Heat Sink for Effective Heat Dissipation

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

Save 25% on an 4 Gauge Amp Kit with Purchase!

$199.95

IN STOCK

Only 3 Left!

640W 4-Channel Z-Line Series Class SQ A/B Amplifier

• RMS: 80W x 4 @ 4 ohms, 160W x 4 @ 2 ohms, Bridged 320W x 2 @ 4 ohms.
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Top mounted controls for simple setup & adjustment
• Frequency Response: 10 - 45,000 Hz

$231.99

IN STOCK

450W 4-Channel eXcelon Series Full Range Power Car Amplifier

• 4 ohms: 60 watts x 2 chan. + 100 watts x 2 chan.
• 2 ohms: 75 watts x 2 chan. + 150 watts x 2 chan.
• Bridged, 4 ohms: 60 watts x 2 chan. + 300 watts x 1 chan.
• Pulse Width Modulated MOSFET Power Supply

$219.99

IN STOCK

Only 1 Left!

1000W Competition Series 4-Channel Class AB Amplifier

• RMS Power: 175W x 4 @ 4 ohms, 250W x 4 @ 2 ohms
• Signal to Noise Ratio: 105dB
• Variable High and Low Pass Filters
• Dimensions: 9.38" W x 20.59" L x 2.35" H

$599.99

AVAILABLE

Ships at Later Date

XXX-6.5C 6.5" Speakers + SEXv2-12D2 750W 12" Subwoofer + H351200.4 4-Ch Hercules Series Amp + TC6KIT-0B 1/0G OFC Amp Kit & BBIC5 2-Ch RCA

• • Speakers: Peak Power: 300W
• RMS Power: 150W
• • Subwoofer: RMS Power: 750W
• Amplifier: 75 Watts RMS x 4 @ 4 ohms
• 150 Watts RMS x 4 @ 2 ohms
• 600 Watts RMS x 2 @ Bridged
• 1/0 Gauge Power Amplifier Installation Kit
• 2 Channel RCA Audio Interconnect Cable

$631.99

IN STOCK

Only 2 Left!

Two Pair of Boss CH6500 6.5" 2-Way Coaxial Speakers + Boss R1004 4-Channel Class A/B Car Amplifier + Complete Amp Wiring Kit

• RMS: 38W x 4 @ 4 ohms
• Total Peak Power: 400W
• Frequency response: 12 - 22,000 Hz
• Dimensions: 9"W x 7-3/4"L x 2"H
• 1" Polymide Dome Tweeter
• Mounting Depth: 1-3/4"
• Poly Injection Woofer Cone
• 4 Ohms Impedance
• Sensitivity: 90dB

$89.99

OUT OF STOCK

List price $164.97: Two Pair of Boss CH6500 6.5" 2-Way Coaxial Speakers + Boss R1004 4-Channel Class A/B Car Amplifier

• RMS: 38W x 4 @ 4 ohms
• Total Peak Power: 400W
• Frequency response: 12 - 22,000 Hz
• Dimensions: 9"W x 7-3/4"L x 2"H
• 1" Polymide Dome Tweeter
• Mounting Depth: 1-3/4"
• Poly Injection Woofer Cone
• 4 Ohms Impedance
• Sensitivity: 90dB

$59.99

OUT OF STOCK

900W 4-Channel PZX Powerzone Series Class AB Car Amplifier

• 115 Watts Max x 4 @ 4 ohms
• 225 Watts Max x 4 @ 2 ohms
• 450 Watts Max x 2 @ 4 ohms, Bridged
• Total Peak Power: 900 Watts
• Speaker-level (high-level) inputs
• Variable Bass Boost: 0 to +9 dB bass boost at 45 Hz
• 4, 3 or 2 channel operation
• Selectable crossover modes: FULL / LPF / HPF

$69.99

IN STOCK

Only 1 Left!

Items per page: 20 50 100

Related Categories

Amplifier Wiring Kits
Get all the cables, wires, and hardware you need to install your new car audio amplifier with one of these power amp kits. Amplifier wiring kits come with your basic power and ground cables, as well as other necessary wires. Select complete amplifier kits will include speaker wire, RCA interconnect cables, and more! To make sure you get the kit that is best designed for your car audio system, scroll down to the bottom of this page for the buying guide.
Capacitors
Car audio capacitors are a great addition to any aftermarket audio system that is in need of a little extra power. Capacitors store a temporary electrical charge that can be released during periods of extra power strain. If a vehicle has dimming headlights when music is played, a capacitor could solve that problem.
Sound Processors
For those who want the most out their car audio system, a quality sound processor is a must. After some slight adjustments, your systems will sound like it has been professionally tuned and optimized. Tune your system to perfection with these crossovers, equalizers, and bass drivers. Click here to learn more about digital sound processors and to find out which type would be best for your car audio system.

4-Channel Amplifiers Information

A 4-channel amplifier is the best way to power a complete set of new car speakers. These amplifiers are designed to power four door speakers, although the right & left channels can usually be bridged to offer a wide range of wiring options. Commonly, the rear channels will be bridged to power a small subwoofer while the front channels are used for the front speakers. Some audiophile installations use these amplifiers to bi-amp a pair of component speakers – in these setups, each tweeter and midwoofer is powered from their own channel. Four channel amplifiers mostly utilize class A/B circuitry for the best possible sound quality, but the last few years have seen a huge rise in the popularity of full-range class D amps. These amplifiers are prized for their compact chassis, and advances in technology have made them sound almost indistinguishable from their A/B counterparts. 4-Channel amplifiers also frequently feature preamp outputs or signal pass-thru, allowing you to provide signal to a subwoofer amp without running another RCA cable to your head unit.