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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.
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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.
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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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Diamond Audio MICRO4V2

600W RMS Class D MicroV2 Series 4-Channel Compact Amplifier with Bluetooth

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Diamond Audio MICRO4V2

600W RMS Class D MicroV2 Series 4-Channel Compact Amplifier with Bluetooth

• 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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Rockford Fosgate Prime R2 R2-750X5

750W RMS Class D Prime Series 5 Channel Car Amplifier

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Rockford Fosgate Prime R2 R2-750X5

750W RMS Class D Prime Series 5 Channel Car Amplifier

• 50 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 750 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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Rockford Fosgate Prime R2 R2-750X1

750W RMS Class D Prime Series Monoblock Car Amplifier

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Rockford Fosgate Prime R2 R2-750X1

750W RMS Class D Prime Series Monoblock Car Amplifier

• 250 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Kenwood KAC-M5024BT

600W Peak (300W RMS) Class D M Series 4-Channel Marine and Powersports Amplifier with Bluetooth

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Kenwood KAC-M5024BT

600W Peak (300W RMS) Class D M Series 4-Channel Marine and Powersports Amplifier with Bluetooth

• 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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Belva BB200ABv2

500W Peak Class A/B Monoblock Amplifier

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Belva BB200ABv2

500W Peak Class A/B Monoblock Amplifier

• Class A/B Monoblock Amplifier
• Adjustable Gain Controls
• Low-Pass Filter: 40-300Hz
• Bass Boost: +0-12DB
• One pair of preamp outputs
• Remote bass knob included

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NVX XKIT82

$79.99

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Rockford Fosgate Prime R2 R2-300X4

300W RMS Class D Prime Series 4 Channel Car Amplifier

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Rockford Fosgate Prime R2 R2-300X4

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

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Alpine R2-A60F

600W RMS Class D R-Series 4 Channel Car Amplifier

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Alpine R2-A60F

600W RMS Class D R-Series 4 Channel Car Amplifier

• 100 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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Crunch GP-2000.4

2000W RMS Class AB Ground Pounder Series 4 Channel Car Amplifier

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Crunch GP-2000.4

2000W RMS Class AB Ground Pounder Series 4 Channel Car Amplifier

• 250 watts x 4 channel @ 4 ohm
• 500 watts x 2 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 2000 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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• 250 watts x 4 channel @ 4 ohm
• 500 watts x 2 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 2000 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

Kenwood KAC-9106D

2000W Peak (1000W RMS) Class D Performance Series Monoblock Car Amplifier

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Kenwood KAC-9106D

2000W Peak (1000W RMS) Class D Performance Series Monoblock Car Amplifier

• 500 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

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Alpine S2-A55V

540W RMS Class D S-Series 5 Channel Car Amplifier

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Alpine S2-A55V

540W RMS Class D S-Series 5 Channel Car Amplifier

• 40 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 60 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 120 watts x 2 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 540 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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Rockford Fosgate Punch P500X1BD

500W RMS Class BD Punch Series Monoblock Car Amplifier

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Rockford Fosgate Punch P500X1BD

500W RMS Class BD Punch Series Monoblock Car Amplifier

• 150 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class BD 1 ohm Stable Monoblock Amplifier

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Kicker LX3000.1 (51LX30001)

3800W Peak (3000W RMS) Class D LX Series Monoblock Car Amplifier (with RGB LED-Lit Bass Remote)

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Kicker LX3000.1 (51LX30001)

3800W Peak (3000W RMS) Class D LX Series Monoblock Car Amplifier (with RGB LED-Lit Bass Remote)

• 1100 watts x 1 channel @ 4 ohm
• 2000 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Save 30% off an NVX XKIT02 Amp Kit at Checkout!
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NVX XKIT02

NVX XKIT02

$179.99

$125.99

$54 Savings!

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Kicker CXA660.5 + Free $25 Gift Card

CX Series 5-Channel Amplifier: Class A/B Full-Range Channels w/Class-D Bass Channel (660 Watt Total RMS Power)

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Kicker CXA660.5 + Free $25 Gift Card

CX Series 5-Channel Amplifier: Class A/B Full-Range Channels w/Class-D Bass Channel (660 Watt Total RMS Power)

• 65 Watts RMS x 4 @ 4 ohm
• 90 Watts RMS x 4 @ 2 ohm
• 180 Watts RMS x 2 @ 4 ohm (bridged)
• 150 Watts RMS x 1 @ 4 ohm (sub channel)
• 300 Watts RMS x 1 @ 4 ohm (sub channel)
• Class A/B Full-Range Channel Amplifier w/Class-D Bass Channel
• KickEQ™ 6dB variable bass boost for those additional low frequencies
• FIT+™ (Fail-safe Integration Technology-PLUS) means it works with nearly every radio

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• 65 Watts RMS x 4 @ 4 ohm
• 90 Watts RMS x 4 @ 2 ohm
• 180 Watts RMS x 2 @ 4 ohm (bridged)
• 150 Watts RMS x 1 @ 4 ohm (sub channel)
• 300 Watts RMS x 1 @ 4 ohm (sub channel)
• Class A/B Full-Range Channel Amplifier w/Class-D Bass Channel
• KickEQ™ 6dB variable bass boost for those additional low frequencies
• FIT+™ (Fail-safe Integration Technology-PLUS) means it works with nearly every radio

AudioControl EPIC1000

1000W RMS Class D Epic Series Monoblock Car Amplifier with Bass Remote

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AudioControl EPIC1000

1000W RMS Class D Epic Series Monoblock Car Amplifier with Bass Remote

• 400 watts x 1 channel @ 4 ohm
• 700 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Bridged (Strapped): 2000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Save 30% on an NVX XKIT42 Amp Kit with Purchase! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT42 Amp Kit! No code needed — discount applies automatically at checkout.
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• 400 watts x 1 channel @ 4 ohm
• 700 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Bridged (Strapped): 2000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

Infinity Reference 3004A (REFERENCE3004A)

400W RMS Class H Reference Series 4 Channel Car Amplifier

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Infinity Reference 3004A (REFERENCE3004A)

400W RMS Class H Reference Series 4 Channel Car Amplifier

• 75 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 H 2 ohm Stable 4-Channel Amplifier

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Save 30% off an NVX XKIT84 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT84 Amp Kit! No code needed — discount applies automatically at checkout.
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Rockford Fosgate Power T1000-4AD

1000W RMS Class AD Power Series 4 Channel Car Amplifier

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Rockford Fosgate Power T1000-4AD

1000W RMS Class AD Power Series 4 Channel Car Amplifier

• 250 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class AD 1 ohm Stable 4-Channel Amplifier

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Save 30% off an NVX XKIT44 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT44 Amp Kit! No code needed — discount applies automatically at checkout.
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Used from: $934.99
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JL Audio VX1000/1i (Open Box, Great)

1000W RMS Class D VXi Series Monoblock Car Amplifier with Built-in DSP

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JL Audio VX1000/1i (Open Box, Great)

1000W RMS Class D VXi Series Monoblock Car Amplifier with Built-in DSP

• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes integrated DSP

10% Off Open Box!
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List price $1449.99
-30% $1,014.99
$913.49 with coupon | Price details

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• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes integrated DSP

AudioControl A600.4

600W RMS Class D Altitude Series 4-Channel Car Amplifier

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AudioControl A600.4

600W RMS Class D Altitude Series 4-Channel Car Amplifier

• 100 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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Kenwood eXcelon XR901-5

900W RMS Class D eXcelon Reference Series 5-Channel Car Amplifier with Bass Remote (Hi-Res Audio Certified)

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Kenwood eXcelon XR901-5

900W RMS Class D eXcelon Reference Series 5-Channel Car Amplifier with Bass Remote (Hi-Res Audio Certified)

• 60 watts x 4 channel + 400 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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Save 30% off an NVX XKIT46 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT46 Amp Kit! No code needed — discount applies automatically at checkout.
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DS18 ION1600.4D

4800W Peak (1600W RMS) Class D ION Series 4 Channel Full Range Car Amplifier

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DS18 ION1600.4D

4800W Peak (1600W RMS) Class D ION Series 4 Channel Full Range Car Amplifier

• 240 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 800 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
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