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  1. Home
  2. Car Audio & Electronics
  3. Car Amplifiers
  4. 4-Channel Amplifiers

4-Channel Amplifiers

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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.
FRP Series (9)
SXE Series (9)
Machete Series (8)
Power Series (7)
Punch Series (6)
CVP Series (5)
Gen-X (5)
V Series (5)
Prime Series (4)
SAE Series (4)
SMD Series (4)
Brutus BRL Series (3)
CRA Series (3)
Ground Pounder Series (3)
Power Pack Series (3)
Premium Pro Series (3)
Rebel Series (3)
SFB Series (3)
Thunder Series (3)
XDM Series (3)
ZR Series (3)
AP Series (2)
Brutus BG Series (2)
BX Series (2)
COLOSSUS Mini Series (2)
COLOSSUS Series (2)
Compact Mean Machine Series (2)
Epic Series (2)
eXcelon Series (2)
HD Series (2)
HED Series (2)
HEX Series (2)
Hooligan Series (2)
iON Series (2)
JD Series (2)
MDX Series (2)
Micro Series (2)
Mini Series (2)
RD Series (2)
Reference Series (2)
SALT Series (2)
Stealth Bomber Series (2)
V-Drive Series (2)
Venezia Series (2)
VXi Series (2)
X Series (2)
XED Series (2)
Zeus Series (2)
Altitude Series (1)
Atom Series (1)
Bomber Series (1)
Buran Series (1)
Club Series (1)
Competition Series (1)
CVPRO Series (1)
CX Series (1)
D Series (1)
DB Series (1)
DC Series (1)
Diamond Elite Series (1)
DMD Series (1)
DSP Series (1)
Edge Series (1)
Elite Series (1)
Excelon Motorsports Series (1)
Excelon Reference Series (1)
Formula Series (1)
FX Series (1)
GM Series (1)
Godfather Series (1)
HCCA Series (1)
JA Series (1)
Kappa Perfect Series (1)
Key Series (1)
LC Series (1)
LX Series (1)
M Series (1)
Marine V Series (1)
Mean Machine Series (1)
MHD Series (1)
MINI BANG Series (1)
MotorSport Series (1)
MVi Series (1)
N-Series (1)
Primo Series (1)
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QS Series (1)
R-Series (1)
RTX Series (1)
S Series (1)
SPL (1)
SPL Show Series (1)
Stage GT Series (1)
Status Series (1)
Stealth Mini Series (1)
Stroker Series (1)
Terminator Series (1)
VEGA Series (1)
VFL Comp Series (1)
VFL Series (1)
VFL Stealth Series (1)
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XC-Series (1)
XFL Series (1)
ZXI Series (1)
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.
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Jensen JAFOUR

950W Peak (880W RMS) Class D JA Series 4-Channel Car Amplifier

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Jensen JAFOUR

950W Peak (880W RMS) Class D JA Series 4-Channel Car Amplifier

• 130 watts x 4 channel RMS @ 4 ohm
• 215 watts x 4 channel RMS @ 2 ohm
• Bridged: 440 watts x 2 channel RMS @ 4 ohm
• Total RMS Power: 880 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 130 watts x 4 channel RMS @ 4 ohm
• 215 watts x 4 channel RMS @ 2 ohm
• Bridged: 440 watts x 2 channel RMS @ 4 ohm
• Total RMS Power: 880 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Crunch CRA-950.4

950W RMS Class D CRA Series 4-Channel Compact Car Amplifier

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Crunch CRA-950.4

950W RMS Class D CRA Series 4-Channel Compact Car Amplifier

• 115 watts x 4 channel @ 4 ohm
• 235 watts x 4 channel @ 2 ohm
• Bridged: 475 watts x 2 channel @ 4 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 115 watts x 4 channel @ 4 ohm
• 235 watts x 4 channel @ 2 ohm
• Bridged: 475 watts x 2 channel @ 4 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 4-Channel Amplifier

MB Quart PA1-800.4

800W Peak Class D Premium Pro Series 4-Channel Car Amplifier

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MB Quart PA1-800.4

800W Peak Class D Premium Pro Series 4-Channel Car Amplifier

• 100 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total Peak Power: 800 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 100 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total Peak Power: 800 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Kenwood eXcelon XM302-4

600W Peak (300W RMS) Class D eXcelon Motorsport Series 4-Channel Marine and Powersports Amplifier (Hi-Res Audio Certified)

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Kenwood eXcelon XM302-4

600W Peak (300W RMS) Class D eXcelon Motorsport Series 4-Channel Marine and Powersports Amplifier (Hi-Res Audio Certified)

• 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

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DS18 SXE-1200.4/BK

1200W Peak (400W RMS) Class AB SXE Series 4 Channel Full Range Car Amplifier

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DS18 SXE-1200.4/BK

1200W Peak (400W RMS) Class AB SXE Series 4 Channel Full Range 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

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DS18 SXE-4000.4D/RD

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

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DS18 SXE-4000.4D/RD

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

• 275 watts x 4 channel @ 4 ohm
• 430 watts x 4 channel @ 2 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier (Red)

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Hifonics ZD-1350.4D Zeus Delta

1350W Peak Class D Zeus Delta Series 4 Channel Car Amplifier

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Hifonics ZD-1350.4D Zeus Delta

1350W Peak Class D Zeus Delta Series 4 Channel Car Amplifier

• 170 watts x 4 channel @ 4 ohm
• 335 watts x 4 channel @ 2 ohm
• Bridged: 675 watts x 2 channel @ 4 ohm
• Class D 2 ohm Stable 4-Channel Amplifier

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Infinity Primus 90041A (PRIMUS90041A)

1480W Peak (520W RMS) Class D Primus Series 4-Channel Car Amplifier

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Infinity Primus 90041A (PRIMUS90041A)

1480W Peak (520W RMS) Class D Primus Series 4-Channel Car Amplifier

• 90 watts x 4 channel @ 4 ohm
• 130 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 90 watts x 4 channel @ 4 ohm
• 130 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Cerwin-Vega CVP1400.4

1400W Peak (560W RMS) Class D CVP Series 4-Channel Car Amplifier

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Cerwin-Vega CVP1400.4

1400W Peak (560W RMS) Class D CVP Series 4-Channel Car Amplifier

• 80 watts x 4 channel @ 4 ohm
• 140 watts x 4 channel @ 2 ohm
• Bridged: 290 watts x 2 channel @ 4 ohm
• Total RMS Power: 560 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Infinity DSP4425 - Open Box, Great

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

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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

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

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DS18 SMD-300.4AB

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

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DS18 SMD-300.4AB

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

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NVX XKIT04

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Deaf Bonce Machete MLA-160.4

900W RMS Class D Machete Series 4-Channel Car Amplifier

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Deaf Bonce Machete MLA-160.4

900W RMS Class D Machete Series 4-Channel Car Amplifier

• 160 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 D 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

NVX XKIT44

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• 160 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 D 2 ohm Stable 4-Channel Amplifier

MB Quart PA1-400.4

400W Peak Class D Premium Pro Series 4-Channel Car Amplifier

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MB Quart PA1-400.4

400W Peak Class D Premium Pro 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 Peak Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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

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Planet Audio MB1200.4D

1200W RMS Class D Planet Pro Series 4 Channel Car Amplifier with Bass Remote

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Planet Audio MB1200.4D

1200W RMS Class D Planet Pro Series 4 Channel Car Amplifier with Bass Remote

• 113 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 D 2 ohm Stable 4-Channel Amplifier

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• 113 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 D 2 ohm Stable 4-Channel Amplifier

Cerwin Vega B54

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

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Cerwin Vega B54

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

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Hifonics BG-520.4

520W RMS Class D Brutus BG Series 4-Channel Car Amplifier

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Hifonics BG-520.4

520W RMS Class D Brutus BG Series 4-Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

MTX Terminator TN3004

300W RMS Class D Terminator Series 4 Channel Car Amplifier

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MTX Terminator TN3004

300W RMS Class D Terminator 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 + @ 2 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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Cerwin-Vega CVP2400.4

2400W Peak (840W RMS) Class D CVP Series 4-Channel Car Amplifier

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Cerwin-Vega CVP2400.4

2400W Peak (840W RMS) Class D CVP Series 4-Channel Car Amplifier

• 120 watts x 4 channel @ 4 ohm
• 210 watts x 4 channel @ 2 ohm
• Bridged: 410 watts x 2 channel @ 4 ohm
• Total RMS Power: 840 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Hifonics HAC-3000.4D Colossus Pro

3000W Peak Class D Colossus Pro Series 4 Channel Car Amplifier

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Hifonics HAC-3000.4D Colossus Pro

3000W Peak Class D Colossus Pro Series 4 Channel Car Amplifier

• 300 watts x 4 channel @ 4 ohm
• 500 watts x 4 channel @ 2 ohm
• 800 watts x 4 channel @ 1 ohm
• Bridged: 900 watts x 2 channel @ 4 ohm
• Class D 1 ohm Stable 4-Channel Amplifier

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• 300 watts x 4 channel @ 4 ohm
• 500 watts x 4 channel @ 2 ohm
• 800 watts x 4 channel @ 1 ohm
• Bridged: 900 watts x 2 channel @ 4 ohm
• Class D 1 ohm Stable 4-Channel Amplifier

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Precision Power A400.4D

400W RMS Class D ATOM Series 4 Channel Car Amplifier

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Precision Power A400.4D

400W RMS Class D ATOM 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 D 2 ohm Stable 4-Channel Amplifier

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    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.
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