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  1. Home
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  3. Discontinued Sony Car Audio & Electronics
  4. Discontinued Sony Car Amplifiers
  5. Discontinued Sony 4-Channel Amplifiers

Discontinued Sony 4-Channel Amplifiers

Perfectly balanced and rich car audio system with Sony 4-Channel Amplifiers.

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Amplifiers with a wiring kit,
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.
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.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not 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.
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.
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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Sony XM-GS400_BAK82

320W 4-Channel GS Series Compact Car Amplifier + FREE Complete 8 Gauge Amplifier Wiring Kit

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Sony XM-GS400_BAK82

320W 4-Channel GS Series Compact Car Amplifier + FREE Complete 8 Gauge Amplifier Wiring Kit

• Free 3-Year Warranty
• 4 ohm: 70 watts x 4-Chan.
• 2 ohm: 80 watts x 4-Chan.
• Bridged, 4 ohm: 160 watts x 2 chan.
• Pulse Width Modulated MOSFET Power Supply
• LED Power (green) and Protect (red) Indicators
• Complete 8 Gauge 2-Channel Amplifier Installation Kit

100

• Free 3-Year Warranty
• 4 ohm: 70 watts x 4-Chan.
• 2 ohm: 80 watts x 4-Chan.
• Bridged, 4 ohm: 160 watts x 2 chan.
• Pulse Width Modulated MOSFET Power Supply
• LED Power (green) and Protect (red) Indicators
• Complete 8 Gauge 2-Channel Amplifier Installation Kit

 
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    Sony 4-Channel Amplifiers Information

    A 4 channel car amplifier from Sony will provide your vehicle with the power it requires. These amps can operate four channels and Sony is a leader in amplification solutions. Power your speakers with a Sony 4-channel amplifier for a great all around sound.
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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