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.

D (16)

A/B (1)

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.

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.

Up to 250 watts (2)

250–500 watts (3)

500–1,000 watts (9)

1,000–1,500 watts (1)

1,500 watts and up (2)

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.

Up to 500 watts (13)

1,000–2,000 watts (2)

2,000–3,000 watts (1)

3,000 watts and up (1)

Minimum Impedance Unbridged

The lowest impedance the amplifier will handle when it is not bridged.

2 (8)

1 (7)

4 (1)

Minimum Impedance Bridged

The lowest impedance the amplifier will handle when it is bridged.

4 ohms (7)

Not Bridgeable (6)

1 ohm (1)

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.

Yes (9)

No (5)

Optional (2)

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.

No (8)

1 pair (4)

Mono output (2)

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.

Speaker Level Inputs

Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.

Yes (11)

No (3)

Maximum Input Gauge Size

This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.

4 (8)

8 (6)

1/0 (2)

Any Gauge with use of Spade Terminal (1)

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Pioneer GM-D1004 with Amplifier Wiring Kit

400W 4-Channel GM Digital Series Class-D Amplifier

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Pioneer GM-D1004 with Amplifier Wiring Kit

400W 4-Channel GM Digital Series Class-D Amplifier

• RMS Power: 45W x 4 @ 4 ohm, 45W x 4 @ 2 ohm
• Total Peak Power: 400W
• CEA-2006 Compliant
• Dimensions: 7-1/8" W x 2-1/2" D x 1-1/2" H

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• RMS Power: 45W x 4 @ 4 ohm, 45W x 4 @ 2 ohm
• Total Peak Power: 400W
• CEA-2006 Compliant
• Dimensions: 7-1/8" W x 2-1/2" D x 1-1/2" H

Pioneer GM-DX874 with Amplifier Wiring Kit

1200 Watts Class D 4-Channel Amplifier w/ Gold-plated RCA Terminals and Bass Boost Remote

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Pioneer GM-DX874 with Amplifier Wiring Kit

1200 Watts Class D 4-Channel Amplifier w/ Gold-plated RCA Terminals and Bass Boost Remote

• 100 Watts RMS x 4 @ 4 ohm
• 150 Watts RMS x 4 @ 2 ohm
• 125 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1200 Watts
• CTA-2006 Compliant/Preamp Outputs/LPF
• Hi-Res Audio
• Gold-plated RCA connections
• Includes Amplifier Wiring Kit
• 10-3/8"W x 2-3/8"H x 7-7/8"D

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Pioneer GM-DX971 with Amplifier Wiring Kit

1200W RMS GM Series Class-D Monoblock Car Amplifier with Bass Remote

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Pioneer GM-DX971 with Amplifier Wiring Kit

1200W RMS GM Series Class-D Monoblock Car Amplifier with Bass Remote

• 500 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• CEA-2006 Compliant
• Includes Amplifier Wiring Kit
• Class D 1 ohm Stable Monoblock Amplifier

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Memphis SE3200.1V2 with Amplifier Wiring Kit

800W RMS Street Edge Series Monoblock Subwoofer Amplifier + 4 Gauge 2-Channel Amp Wiring Kit

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Memphis SE3200.1V2 with Amplifier Wiring Kit

800W RMS Street Edge Series Monoblock Subwoofer Amplifier + 4 Gauge 2-Channel Amp Wiring Kit

• 330 watts x 1 channel @ 4 ohm
• 550 watts x 1 channel @ 2 ohm
• 800 watts x 1 channel @ 1 ohm
• Total RMS Power: 800 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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Memphis MJP1000.1 with Amplifier Wiring Kit

1000W RMS MOJO Pro Series Class-D Monoblock Car Amplifier

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Memphis MJP1000.1 with Amplifier Wiring Kit

1000W RMS MOJO Pro Series Class-D Monoblock Car Amplifier

• 425 watts x 1 channel @ 4 ohm
• 725 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 425 watts x 1 channel @ 4 ohm
• 725 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Class D Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Memphis PRX600.1V with Amplifier Wiring Kit

600W RMS Power Reference Series Monoblock Amplifier with Bass Remote and 4 Gauge Wiring Kit

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Memphis PRX600.1V with Amplifier Wiring Kit

600W RMS Power Reference Series Monoblock Amplifier with Bass Remote and 4 Gauge Wiring Kit

• 250 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total RMS Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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Memphis MM500.4V with Amplifier Wiring Kit

500W RMS MM Series Class-D 4-Channel Marine Amplifiers with Bass Remote

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Memphis MM500.4V with Amplifier Wiring Kit

500W RMS MM Series Class-D 4-Channel Marine Amplifiers with Bass Remote

• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

Memphis MX400.4 with Amplifier Wiring Kit

400W RMS MX-Series 4-Channel Class-D Marine/Powersports Amplifier

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Memphis MX400.4 with Amplifier Wiring Kit

400W RMS MX-Series 4-Channel Class-D Marine/Powersports 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 D 2 ohm Stable 4-Channel Amplifier

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• 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 D 2 ohm Stable 4-Channel Amplifier

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Memphis MX600.6 with Amplifier Wiring Kit

600W RMS MX-Series 6-Channel Class-D Marine/Powersports Amplifier

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Memphis MX600.6 with Amplifier Wiring Kit

600W RMS MX-Series 6-Channel Class-D Marine/Powersports Amplifier

• 50 watts x 4 channel @ 4 ohm + 100 x 2 channel
• 75 watts x 4 channel @ 2 ohm + 150 x 2 channel
• Bridged: 150 watts x 2 channel @ 4 ohm + 300 x 1 Channel
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel Amplifier

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Memphis MXA600.6 with Amplifier Wiring Kit

600W RMS Powersports Series Class-D 6-Channel Amplifier with Bass Remote

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Memphis MXA600.6 with Amplifier Wiring Kit

600W RMS Powersports Series Class-D 6-Channel Amplifier with Bass Remote

• 50 watts x 4 channel @ 4 ohm + 100 watts x 2 @ 4 ohm
• 75 watts x 4 channel @ 2 ohm + 150 watts x 2 @ 2 ohm
• Bridged: 150 watts x 2 channel + 300 watts x 1 @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel-Channel Amplifier

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Memphis MM900.6V with Amplifier Wiring Kit

900W Class-D 6-Channel Marine Amplifier

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Memphis MM900.6V with Amplifier Wiring Kit

900W Class-D 6-Channel Marine Amplifier

• 70 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm sealed chassis and conformal coated boards
• 2/4/6 channel options,
• Class D 2 ohm Stable 6-Channel-Channel Amplifier

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Memphis MX800.4 with Amplifier WIring Kit

800W RMS MX-Series 4-Channel Class-D Marine/Powersports Amplifier

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Memphis MX800.4 with Amplifier WIring Kit

800W RMS MX-Series 4-Channel Class-D Marine/Powersports Amplifier

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

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

Memphis SRX500.1V with Amplifier Wiring Kit

500W RMS Street Reference Series Monoblock Amplifier + Belva 4 Gauge Amp Wiring Kit

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Memphis SRX500.1V with Amplifier Wiring Kit

500W RMS Street Reference Series Monoblock Amplifier + Belva 4 Gauge Amp Wiring Kit

• 350 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class A/B 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 350 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class A/B 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Memphis SE2000.1V2 with Amplifier Wiring Kit

2000W Peak (570W RMS) Street Edge Series Class-D Monoblock Car Amplifier with Remote Bass Knob

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Memphis SE2000.1V2 with Amplifier Wiring Kit

2000W Peak (570W RMS) Street Edge Series Class-D Monoblock Car Amplifier with Remote Bass Knob

• 220 watts x 1 channel @ 4 ohm
• 380 watts x 1 channel @ 2 ohm
• 570 watts x 1 channel @ 1 ohm
• Total RMS Power: 570 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 220 watts x 1 channel @ 4 ohm
• 380 watts x 1 channel @ 2 ohm
• 570 watts x 1 channel @ 1 ohm
• Total RMS Power: 570 watts
• Class D 1 ohm Stable Monoblock Amplifier

Memphis VIV2200.1V2 with Amplifier Wiring Kit

2200W RMS SixFive Series Class D Monoblock Amplifier

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Memphis VIV2200.1V2 with Amplifier Wiring Kit

2200W RMS SixFive Series Class D Monoblock Amplifier

• 550 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• 2200 watts x 1 channel @ 1 ohm
• Total RMS Power: 2200 watts
• CEA-2006 Compliant
• Class D 1 ohm Stable Monoblock Amplifier

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Memphis VIV3000.1V2 with Amplifier Wiring Kit

3000W RMS SixFive Series Class D Monoblock Amplifier

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Memphis VIV3000.1V2 with Amplifier Wiring Kit

3000W RMS SixFive Series Class D Monoblock Amplifier

• 850 watts x 1 channel @ 4 ohm
• 1600 watts x 1 channel @ 2 ohm
• 3000 watts x 1 channel @ 1 ohm
• Total RMS Power: 3000 watts
• CEA-2006 Compliant
• Class D 1 ohm Stable Monoblock Amplifier

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Pioneer GM-DX975 with Amplifier Wiring Kit

2000 Watts Class D 5-Channel Amplifier w/ Gold-plated RCA Terminals and Bass Boost Remote

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Pioneer GM-DX975 with Amplifier Wiring Kit

2000 Watts Class D 5-Channel Amplifier w/ Gold-plated RCA Terminals and Bass Boost Remote

• 75 Watts RMS x 4 @ 4 ohm + 350 watts RMS x 1
• 100 Watts RMS x 1 @ 2 ohm + 600 watts RMS x 1
• 1200 Watts RMS x 1 @ 1 ohm
• 5-channel operation
• CEA-2006 Compliant/Preamp Outputs/LPF
• HQ Sound Parts
• Gold-plated RCA connections
• Includes Amplifier Wiring Kit
• 12-7/16"W x 2"H x 7-7/8"D

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Free Amp Wiring Kit with Amplifiers

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Pioneer GM-D1004 with Amplifier Wiring Kit

Pioneer GM-D1004 with Amplifier Wiring Kit

Pioneer GM-DX874 with Amplifier Wiring Kit

Pioneer GM-DX874 with Amplifier Wiring Kit

Pioneer GM-DX971 with Amplifier Wiring Kit

Pioneer GM-DX971 with Amplifier Wiring Kit

Memphis SE3200.1V2 with Amplifier Wiring Kit

Memphis SE3200.1V2 with Amplifier Wiring Kit

Memphis MJP1000.1 with Amplifier Wiring Kit

Memphis MJP1000.1 with Amplifier Wiring Kit

Memphis PRX600.1V with Amplifier Wiring Kit

Memphis PRX600.1V with Amplifier Wiring Kit

Memphis MM500.4V with Amplifier Wiring Kit

Memphis MM500.4V with Amplifier Wiring Kit

Memphis MX400.4 with Amplifier Wiring Kit

Memphis MX400.4 with Amplifier Wiring Kit

Memphis MX600.6 with Amplifier Wiring Kit

Memphis MX600.6 with Amplifier Wiring Kit

Memphis MXA600.6 with Amplifier Wiring Kit

Memphis MXA600.6 with Amplifier Wiring Kit

Memphis MM900.6V with Amplifier Wiring Kit

Memphis MM900.6V with Amplifier Wiring Kit

Memphis MX800.4 with Amplifier WIring Kit

Memphis MX800.4 with Amplifier WIring Kit

Memphis SRX500.1V with Amplifier Wiring Kit

Memphis SRX500.1V with Amplifier Wiring Kit

Memphis SE2000.1V2 with Amplifier Wiring Kit

Memphis SE2000.1V2 with Amplifier Wiring Kit

Memphis VIV2200.1V2 with Amplifier Wiring Kit

Memphis VIV2200.1V2 with Amplifier Wiring Kit

Memphis VIV3000.1V2 with Amplifier Wiring Kit

Memphis VIV3000.1V2 with Amplifier Wiring Kit

Pioneer GM-DX975 with Amplifier Wiring Kit

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