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.

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 249.99 watts (22)

250–499.99 watts (82)

500–999.99 watts (136)

1,000–1,499.99 watts (61)

1,500 watts or more (66)

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 499.99 watts (19)

500–999.99 watts (41)

1,000–1,999.99 watts (73)

2,000–2,999.99 watts (42)

3,000 watts or more (32)

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.

Yes (197)

No (123)

Optional (78)

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.

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 (223)

No (73)

Optional (66)

Yes - with included adapter (18)

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.

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Rockford Fosgate P500X2 with Amplifier Wiring Kit

500W RMS 2-Channel Amplifier (P500X.2) with NVX 8 Gauge Amplifier Wiring Kit

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Rockford Fosgate P500X2 with Amplifier Wiring Kit

500W RMS 2-Channel Amplifier (P500X.2) with NVX 8 Gauge Amplifier Wiring Kit

• 150W x 2 Chan. @ 4 ohm
• 250W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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Diamond Audio HXM800.4D with NVX 8 Gauge Amp Kit

800W RMS HXM Series Class-D 4-Channel Full Range Amplifier

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Diamond Audio HXM800.4D with NVX 8 Gauge Amp Kit

800W RMS HXM Series Class-D 4-Channel Full Range Amplifier

• 120 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-Channel Amplifier
• Includes Amplifier Wiring Kit

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Rockford Fosgate M5-800X4 with NVX 8 Gauge Amp Kit

400W RMS M5-Series Class-AD 4-channel Marine Amplifier

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Rockford Fosgate M5-800X4 with NVX 8 Gauge Amp Kit

400W RMS M5-Series Class-AD 4-channel Marine Amplifier

• 100 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 AD 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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NVX XQA16005 with NVX 1/0 Gauge Amp Kit

1600W RMS XQ-Series SQ Hi-Res Class D 5-Channel Amplifier with X-Boost

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NVX XQA16005 with NVX 1/0 Gauge Amp Kit

1600W RMS XQ-Series SQ Hi-Res Class D 5-Channel Amplifier with X-Boost

• 125 watts x 4 channel + 300W x1 @ 4 ohm
• 200 watts x 4 channel + 500W x 1 @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm + 800W @ 1 ohm
• Total RMS Power: 1600 watts
• Class D 1 ohm Stable 5-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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NVX VAD10004 with Amplifier Wiring Kit

1000W RMS Full Range 4-Channel Amplifier

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NVX VAD10004 with Amplifier Wiring Kit

1000W RMS Full Range 4-Channel Amplifier

• RMS: 150 x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged 500W x 2 @ 4 ohm
• Total RMS Power: 1000W
• CEA-2006 Compliant
• Efficient Full Range Class D Design
• Includes Amplifier Wiring Kit

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• RMS: 150 x 4 @ 4 ohm, 250W x 4 @ 2 ohm, Bridged 500W x 2 @ 4 ohm
• Total RMS Power: 1000W
• CEA-2006 Compliant
• Efficient Full Range Class D Design
• Includes Amplifier Wiring Kit

Wet Sounds HTX-2 + 30% Off High Quality NVX Amp Kit

600W RMS 2-Channel HTX Series Class D Full-Range Marine Amplifier (WetSounds)

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Wet Sounds HTX-2 + 30% Off High Quality NVX Amp Kit

600W RMS 2-Channel HTX Series Class D Full-Range Marine Amplifier (WetSounds)

• 150 Watts RMS x 2 @ 4 ohm
• 300 Watts RMS x 2 @ 2 ohm
• 600 Watts RMS x 1 @ 4 ohm, Bridged
• Total Peak Power: 900 Watts RMS
• CEA-2006 Compliant
• Removable crossover/level control cover
• Conformal coated PCB boards
• Mono or 2 channel operation

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Belva BXA5002 with Belva 8 Gauge Amp kit

250W Max Class AB 2-Ohm Stable 2-Channel Amplifier Package

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Belva BXA5002 with Belva 8 Gauge Amp kit

250W Max Class AB 2-Ohm Stable 2-Channel Amplifier Package

• 125 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Total Peak Power: 500 watts
• Class A/B 2 ohm Stable 2-Channel-Channel
• Includes Amplifier Wiring Kit

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• 125 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Total Peak Power: 500 watts
• Class A/B 2 ohm Stable 2-Channel-Channel
• Includes Amplifier Wiring Kit

Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

750W RMS SYN-DX Series Bridgeable Full Range 2-Channel Class D Marine Amplifier (WetSounds)

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Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

750W RMS SYN-DX Series Bridgeable Full Range 2-Channel Class D Marine Amplifier (WetSounds)

• 200 watts x 2 chan. @ 4 Ohm
• 375 watts x 2 chan. @ 2 Ohm
• 750 watts x 1 chan. @ 4 Ohm
• Total power output: 750 watts RMS
• Variable low-pass filter: 50 - 250 Hz, 12 dB/octave
• Variable high-pass filter: 50 - 250 Hz, 12 dB/octave
• Fuse Rating: 30 A x 3

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Rockford Fosgate Power T2500-1bdCP + NVX XKIT02 1/0 Gauge Amp Wiring Kit

2500W RMS Constant Power Series Class BD Monoblock Amplifier

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Rockford Fosgate Power T2500-1bdCP + NVX XKIT02 1/0 Gauge Amp Wiring Kit

2500W RMS Constant Power Series Class BD Monoblock Amplifier

• RMS: 1500W x 1 @ 4 ohm, 2500W x 1 @ 2 ohm, 2500W x 1 @ 1 ohm
• Total RMS Power: 2500W
• CEA-2006 Compliant
• Variable Bass Boost: 0 to +18 dB at 45 Hz
• Ultra Efficient Class bD Circuitry
• Dimensions: 21-7/8"L x 8-3/16"W x 2-3/16"H
• Includes NVX XKIT02 1/0 Gauge Amp Wiring Kit

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Crunch GP-2000.4 with Belva 4 Gauge Amp Kit

Crunch 2000 Watts Ground Pounder Four Channel Car Audio Amplifier

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Crunch GP-2000.4 with Belva 4 Gauge Amp Kit

Crunch 2000 Watts Ground Pounder Four Channel Car Audio Amplifier

• Variable Electronic Crossover
• Class A/B Amplifier
• Switchable Bass Boost
• Includes Belva BAK44 4 Gauge Amp Wiring Kit

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• Variable Electronic Crossover
• Class A/B Amplifier
• Switchable Bass Boost
• Includes Belva BAK44 4 Gauge Amp Wiring Kit

Hifonics ZD-1350.4D with Amplifier Wiring Kit

1350W RMS Zeus Delta Series Class-D 4-Channel Car Amplifier

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Hifonics ZD-1350.4D with Amplifier Wiring Kit

1350W RMS Zeus Delta Series Class-D 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-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 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-Channel Amplifier
• Includes Amplifier Wiring Kit

Autotek MM-2025.1D (Mean Machine) with Belva 4 Gauge Amp Kit

2000W Peak Class D Mean Machine Series Monoblock Car Amplifier

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Autotek MM-2025.1D (Mean Machine) with Belva 4 Gauge Amp Kit

2000W Peak Class D Mean Machine Series Monoblock Car Amplifier

• 500 watts Peak @ 4 ohm
• 1000 watts Peak @ 2 ohm
• 2000 watts Peak @ 1 ohm
• Total Peak Power: 2000 watts
• Class D Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 500 watts Peak @ 4 ohm
• 1000 watts Peak @ 2 ohm
• 2000 watts Peak @ 1 ohm
• Total Peak Power: 2000 watts
• Class D Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Cerwin Vega CVP2000.1D with Belva 4 Gauge Amp Kit

2000W Peak (400W RMS) CVP Series Class-AB Monoblock Amplifier with Bass Remote

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Cerwin Vega CVP2000.1D with Belva 4 Gauge Amp Kit

2000W Peak (400W RMS) CVP Series Class-AB Monoblock Amplifier with Bass Remote

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

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

Deaf Bonce Apocalypse 1300.1 Pro with Belva 4 Gauge Amp Kit

1300W RMS Class D Apocalypse Atom Pro Series Monoblock Subwoofer Amplifier with Bass Remote

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Deaf Bonce Apocalypse 1300.1 Pro with Belva 4 Gauge Amp Kit

1300W RMS Class D Apocalypse Atom Pro Series Monoblock Subwoofer Amplifier with Bass Remote

• 490 watts x 1 channel @ 4 ohm
• 780 watts x 1 channel @ 2 ohm
• 1300 watts x 1 channel @ 1 ohm
• Total RMS Power: 1300 watts
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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DS18 SXE-3000.4D/BK (Black) with Belva 4 Gauge Amp Kit

3000W Peak (1000W RMS) Class D SXE Series 4-Channel Car Amplifier

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DS18 SXE-3000.4D/BK (Black) with Belva 4 Gauge Amp Kit

3000W Peak (1000W RMS) Class D SXE Series 4-Channel Car Amplifier

• 200 watts x 4 channel @ 4 ohm
• 320 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1,000 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier (Black)
• Includes Amplifier Wiring Kit

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Hifonics HAC-1500.1D with Belva 1/0 Gauge Amp Kit

1500W Peak Colossus Pro Series Class-D Monoblock Amplifier with Bass Remote

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Hifonics HAC-1500.1D with Belva 1/0 Gauge Amp Kit

1500W Peak Colossus Pro Series Class-D Monoblock Amplifier with Bass Remote

• 1 x 375 @ 4 ohm
• 1 x 750 @ 2 ohm
• 1 x 1500 @ 1 ohm
• Total Peak Power: 1 x 1500
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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• 1 x 375 @ 4 ohm
• 1 x 750 @ 2 ohm
• 1 x 1500 @ 1 ohm
• Total Peak Power: 1 x 1500
• Class D 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

2480 Peak Monoblock Class-D Marine Car Audio Amplifier

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Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

2480 Peak Monoblock Class-D Marine Car Audio Amplifier

• 600 watts x 1 channel @ 4 ohm
• 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 1240 watts
• Corrosion Protection
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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JVC KS-DR2104DBT with NVX 8 Gauge Amp Kit

600W Peak (200W RMS) DRVN Series Class-D 4-Channel Amplifier with Bluetooth Remote

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JVC KS-DR2104DBT with NVX 8 Gauge Amp Kit

600W Peak (200W RMS) DRVN Series Class-D 4-Channel Amplifier with Bluetooth Remote

• 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-Channel Amplifier
• Includes Amplifier Wiring Kit

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List price $546.79

-27% $399.00

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Rockford Fosgate M5-1000X1with NVX 8 Gauge Amp Kit

750W RMS M5-Series Class-BD Monoblock Marine Amplifier

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Rockford Fosgate M5-1000X1with NVX 8 Gauge Amp Kit

750W RMS M5-Series Class-BD Monoblock Marine Amplifier

• 500 watts x 1 channel @ 4 ohm
• 750 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm (Dynamic Power)
• Total RMS Power: 750 watts
• Class BD 1 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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MTX TH2500.1 with NVX 1/0 Gauge Amp Kit

2500W RMS Class D Thunder Series Monoblock Car Amplifier (with Bass Remote)

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MTX TH2500.1 with NVX 1/0 Gauge Amp Kit

2500W RMS Class D Thunder Series Monoblock Car Amplifier (with Bass Remote)

• 1000 watts x 1 channel @ 4 ohm
• 1750 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 1000 watts x 1 channel @ 4 ohm
• 1750 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Car Amplifier Packages & Bundles for your 1991 SL1

Your Vehicle

Shop the Category

Rockford Fosgate P500X2 with Amplifier Wiring Kit

Rockford Fosgate P500X2 with Amplifier Wiring Kit

Diamond Audio HXM800.4D with NVX 8 Gauge Amp Kit

Diamond Audio HXM800.4D with NVX 8 Gauge Amp Kit

Rockford Fosgate M5-800X4 with NVX 8 Gauge Amp Kit

Rockford Fosgate M5-800X4 with NVX 8 Gauge Amp Kit

NVX XQA16005 with NVX 1/0 Gauge Amp Kit

NVX XQA16005 with NVX 1/0 Gauge Amp Kit

NVX VAD10004 with Amplifier Wiring Kit

NVX VAD10004 with Amplifier Wiring Kit

Wet Sounds HTX-2 + 30% Off High Quality NVX Amp Kit

Wet Sounds HTX-2 + 30% Off High Quality NVX Amp Kit

Belva BXA5002 with Belva 8 Gauge Amp kit

Belva BXA5002 with Belva 8 Gauge Amp kit

Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

Wet Sounds SYN-DX 2 + NVX 4 Gauge Marine Amp Kit

Rockford Fosgate Power T2500-1bdCP + NVX XKIT02 1/0 Gauge Amp Wiring Kit

Rockford Fosgate Power T2500-1bdCP + NVX XKIT02 1/0 Gauge Amp Wiring Kit

Crunch GP-2000.4 with Belva 4 Gauge Amp Kit

Crunch GP-2000.4 with Belva 4 Gauge Amp Kit

Hifonics ZD-1350.4D with Amplifier Wiring Kit

Hifonics ZD-1350.4D with Amplifier Wiring Kit

Autotek MM-2025.1D (Mean Machine) with Belva 4 Gauge Amp Kit

Autotek MM-2025.1D (Mean Machine) with Belva 4 Gauge Amp Kit

Cerwin Vega CVP2000.1D with Belva 4 Gauge Amp Kit

Cerwin Vega CVP2000.1D with Belva 4 Gauge Amp Kit

Deaf Bonce Apocalypse 1300.1 Pro with Belva 4 Gauge Amp Kit

Deaf Bonce Apocalypse 1300.1 Pro with Belva 4 Gauge Amp Kit

DS18 SXE-3000.4D/BK (Black) with Belva 4 Gauge Amp Kit

DS18 SXE-3000.4D/BK (Black) with Belva 4 Gauge Amp Kit

Hifonics HAC-1500.1D with Belva 1/0 Gauge Amp Kit

Hifonics HAC-1500.1D with Belva 1/0 Gauge Amp Kit

Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

Hertz HCP 1MDK with NVX 4 Gauge Amp Kit

JVC KS-DR2104DBT with NVX 8 Gauge Amp Kit

JVC KS-DR2104DBT with NVX 8 Gauge Amp Kit

Rockford Fosgate M5-1000X1with NVX 8 Gauge Amp Kit

Rockford Fosgate M5-1000X1with NVX 8 Gauge Amp Kit

MTX TH2500.1 with NVX 1/0 Gauge Amp Kit

MTX TH2500.1 with NVX 1/0 Gauge Amp Kit

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