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1957 GMC 350-8

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Use our shopping filters to find the right 2/3/4-channel amp to power upgraded speakers properly.

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Amps for Adding Speakers for 1957 GMC 350-8

Some vehicles require an amp bypass module, a line-output converter like the NVX XLCA2 or AudioControl LC2i, or a DSP to integrate with your factory radio and avoid bass roll-off. Bass roll-off occurs when a factory radio's crossover is designed only for the original equipment speakers, resulting in a not complete signal being sent to your new aftermarket amp.

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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.
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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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Autotek MM-1525.4D Mean Machine

1500W Peak Class D Compact Mean Machine Series 4-Channel Car Amplifier

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Autotek MM-1525.4D Mean Machine

1500W Peak Class D Compact Mean Machine Series 4-Channel Car Amplifier

• 200 watts x 4 channel @ 4 ohm
• 375 watts x 4 channel @ 2 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Total Peak Power: 1500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Crunch CRA-1500.4

1500W RMS Class D CRA Series 4-Channel Compact Car Amplifier

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Crunch CRA-1500.4

1500W RMS Class D CRA Series 4-Channel Compact Car Amplifier

• 185 watts x 4 channel @ 4 ohm
• 375 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 Amplifier

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NVX XKIT44

NVX XKIT44

$119.99

$83.99

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• 185 watts x 4 channel @ 4 ohm
• 375 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 Amplifier

JL Audio VX700/5i

700W RMS Class D VXi Series 5 Channel Car Amplifier with Built-in DSP

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JL Audio VX700/5i

700W RMS Class D VXi Series 5 Channel Car Amplifier with Built-in DSP

• 75 watts x 4 channel + 180 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes integrated DSP

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Jensen JAFIVE

1175W Peak (1055W RMS) Class D JA Series 5-Channel Car Amplifier

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Jensen JAFIVE

1175W Peak (1055W RMS) Class D JA Series 5-Channel Car Amplifier

• 85 watts x 4 channel + 310 watts x 1 channel RMS @ 4 ohm
• 135 watts x 2 channel + 495 watts x 1 channel RMS @ 2 ohm
• Total RMS Power: 1055 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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• 85 watts x 4 channel + 310 watts x 1 channel RMS @ 4 ohm
• 135 watts x 2 channel + 495 watts x 1 channel RMS @ 2 ohm
• Total RMS Power: 1055 watts
• Class D 2 ohm Stable 5-Channel Amplifier

Sundown Audio SAM-100.4

400W RMS Class D SAM Series 4-Channel Marine and Amplifier with Bluetooth

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Sundown Audio SAM-100.4

400W RMS Class D SAM Series 4-Channel Marine and Amplifier with Bluetooth

• 700 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 700 watts x 4 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 700 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 700 watts x 4 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

MTX MA800.4

800W RMS Class D MA Series 4-Channel Marine Amplifier

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MTX MA800.4

800W RMS Class D MA Series 4-Channel Marine Amplifier

• 100 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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• 100 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

Kicker CXA660.5T (46CXA6605T) w/ Remote Bass Controller

660W RMS Class AB CX-Series 5 Channel Car Amplifier with Wired Bass Remote Controller for CX Series Amplifiers

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Kicker CXA660.5T (46CXA6605T) w/ Remote Bass Controller

660W RMS Class AB CX-Series 5 Channel Car Amplifier with Wired Bass Remote Controller for CX Series Amplifiers

  • Kicker CXA660.5T 660W RMS 5-Channel Car Amplifier
  • Class AB CX-Series high-performance power plant
  • Wired Bass Remote Controller for effortless adjustments
  • Precision audio control for CX-Series amplifiers
  • Complete system integration with professional-grade hardware
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List price $519.98
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  • Kicker CXA660.5T 660W RMS 5-Channel Car Amplifier
  • Class AB CX-Series high-performance power plant
  • Wired Bass Remote Controller for effortless adjustments
  • Precision audio control for CX-Series amplifiers
  • Complete system integration with professional-grade hardware

JL Audio JD700/5

700W RMS Class D JD Series 5-Channel Car Amplifier

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JL Audio JD700/5

700W RMS Class D JD Series 5-Channel Car Amplifier

• 75 watts x 4 channel + 180 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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MTX RTX1600.4

1600W RMS Class D RTX Series 4-Channel Car Amplifier

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MTX RTX1600.4

1600W RMS Class D RTX Series 4-Channel Car Amplifier

• 250 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

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• 250 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

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Hertz HCP 5D

1500W Peak (750W RMS) Class D Hertz Compact Power (HCP) Series 5-Channel Full Range Car Amplifier

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Hertz HCP 5D

1500W Peak (750W RMS) Class D Hertz Compact Power (HCP) Series 5-Channel Full Range Car Amplifier

• 55 watts x 4 channel + 160 watts x 1 channel @ 4 ohm
• 90 watts x 4 channel + 280 watts x 1 channel @ 2 ohm
• Bridged: 180 watts x 2 channel + 160 watts x 1 channel @ 4 ohm
• Bridged: 180 watts x 2 channel + 280 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier

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List price $600.00
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NVX XKIT86

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Boss Elite MPD380.4

380W RMS Class D Elite Series 4 Channel Marine Amplifier

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Boss Elite MPD380.4

380W RMS Class D Elite Series 4 Channel Marine Amplifier

• 70 watts x 4 channel @ 4 ohm
• 95 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 4 channel @ 4 ohm
• Total RMS Power: 380 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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List price $437.98
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• 70 watts x 4 channel @ 4 ohm
• 95 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 4 channel @ 4 ohm
• Total RMS Power: 380 watts
• Class D 2 ohm Stable 4-Channel Amplifier

JL Audio MV400/4i

400W RMS Class D MVi Series 4 Channel Marine Amplifier

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JL Audio MV400/4i

400W RMS Class D MVi Series 4 Channel Marine 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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$1,099.99

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DS18 X2

1140W Peak (460W RMS) Class D X Series 2-Channel Compact Car Amplifier

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DS18 X2

1140W Peak (460W RMS) Class D X Series 2-Channel Compact Car Amplifier

• 140 watts x 2 channel @ 4 ohm
• 230 watts x 2 channel @ 2 ohm
• Bridged: 380 watts x 1 channel @ 4 ohm
• Total RMS Power: 460 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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List price $259.99
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DS18 X4

1320W Peak (560W RMS) Class D X-Series 4 Channel Full Range Car Amplifier

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DS18 X4

1320W Peak (560W RMS) Class D X-Series 4 Channel Full Range Car Amplifier

• 70 watts x 4 channel @ 4 ohm
• 140 watts x 4 channel @ 2 ohm
• Bridged: 220 watts x 2 channel @ 4 ohm
• Total RMS Power: 560 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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$215.95

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• 70 watts x 4 channel @ 4 ohm
• 140 watts x 4 channel @ 2 ohm
• Bridged: 220 watts x 2 channel @ 4 ohm
• Total RMS Power: 560 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Cerwin-Vega CVPRO2K4

2080W RMS Class D CV PRO Series 4 Channel Car Amplifier

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Cerwin-Vega CVPRO2K4

2080W RMS Class D CV PRO Series 4 Channel Car Amplifier

• 325 watts x 4 channel @ 4 ohm
• 520 watts x 4 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 2080 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
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Cerwin-Vega B55

1900W Peak (950W RMS) Class D Stealth Bomber Series 5 Channel Car Amplifier with Bass Remote

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Cerwin-Vega B55

1900W Peak (950W RMS) Class D Stealth Bomber Series 5 Channel Car Amplifier with Bass Remote

• 80 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm + 350 watts x 1 channel @ 2 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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DS18 G1800.4D

1800W Peak (920W RMS) Class D GEN-X Series 4 Channel Full Range Car Amplifier

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DS18 G1800.4D

1800W Peak (920W RMS) Class D GEN-X Series 4 Channel Full Range Car Amplifier

• 150 watts x 4 channel @ 4 ohm
• 230 watts x 4 channel @ 2 ohm
• Bridged: 430 watts x 2 channel @ 4 ohm
• Total RMS Power: 920 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

NVX XKIT44

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DS18 G4000.5D

4000W Peak (1480W RMS) Class D Gen-X Series 5 Channel Car Amplifier with Bass Remote

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DS18 G4000.5D

4000W Peak (1480W RMS) Class D Gen-X Series 5 Channel Car Amplifier with Bass Remote

• 130 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 220 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 420 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 1480 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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AudioControl ACM-2.300

300W RMS Class D ACM Series 2-Channel Compact Car Amplifier

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AudioControl ACM-2.300

300W RMS Class D ACM Series 2-Channel Compact Car Amplifier

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

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Pioneer GM-DX104

400W Peak (180W RMS) Class D GM Series 4 Channel Car Amplifier (Hi-Res Audio Certified)

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Pioneer GM-DX104

400W Peak (180W RMS) Class D GM Series 4 Channel Car Amplifier (Hi-Res Audio Certified)

• 45 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Bridged: 90 watts x 2 channel @ 4 ohm
• Total RMS Power: 180 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 1957 350-8

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 1957 GMC 350-8?

    A: Yes this page includes all the best Multi-channel Amplifiers for Adding Speakers that work in your 350-8.

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