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The XM-GS4 4-channel amplifier is engineered to enhance every track—including High-Resolution Audio files—thanks to an ultra-wide frequency range that extends up to 100 kHz. A range of premium circuit components work together for ultimate efficiency and p

Sony XM-GS4 4/3/2 Channel Stereo Power Amplifier

The XM-GS4 4-channel amplifier is engineered to enhance every track—including High-Resolution Audio files—thanks to an ultra-wide frequency range that extends up to 100 kHz. A range of premium circuit components work together for ultimate efficiency and pitch-perfect sound reproduction, so you can give every road trip the soundtrack it deserves.

Fine detail across the whole spectrum - Hear thundering lows and soaring highs brought to life, with an ultra-wide frequency response that extends up to 100 kHz.

4 channels of dynamic sound - Enjoy powerful audio throughout the entire car, thanks to a 70 W x 4 RMS power output.

Hardwired for exceptional sound - Premium circuitry for optimum performance

Get the best from your in-car sound, thanks to the XM-GS4's hub of high-quality audio circuitry. Everything is engineered for minimal noise and maximum efficiency — including the heavy-duty aluminum casing, which keeps things stable for low distortion.

Capacitors - High-quality electrolytic capacitors assist in powering bright, versatile sound.

Transistor - The high-current transistor ensures fast, efficient power transfer for responsive operation.

Choke coil - Low flux choke coils in the power block deliver low-noise, high-quality sound reproduction.

More sound, less noise - Noise-resistant potentiometers

Our carefully selected potentiometers are highly reliable, for consistently minimal noise. The twisted-wire cable structure provides additional noise resistance from electromagnetic interference.

Total system efficiency - Schottky-barrier diodes enhance audio stability

Our premium diodes experience a lower voltage drop than conventional diodes, enabling faster switching and better system efficiency for smoother, more stable audio.

Our high and low pass filters separate the audio range to deliver an accurate sound stage that's rich in powerful bass, clear mids, and pristine highs.

The power behind every track - Supercharge your favorite songs with this 4-channel amp

Enjoy 70 W of power from each of four separate channels, for more flexibility in setting up your ideal in-car sound stage. Using a bi-amplification connection, you can assign two channels to bass frequencies and two to high frequencies, minimizing distortion. You can also independently adjust the volume of different frequencies to find the perfect balance for each song.

Get the full setup - Combine our premium components for unrivaled acoustics

Take your in-car sound further. Our premium on-road audio products are all designed to complement each other, so you can build the perfect audio soundscape for your car.

RSX-GS9 media receiver - Get the ultimate in-car audio experience, with the world's first receiver to boast DSD native playback.

XS-GS1 component super tweeters - Enjoy supreme ultra-highs from these innovative front-facing super tweeters.

Flexible installation - Choose from multiple mounting options

The XM-GS4 can be positioned in a number of different places throughout the car. Install it in the front for easy access to controls, or put it in the boot to save on space.

Premium components for superior performance

Low and high pass filters for accurate sound

Power up your in-car sound with the XM-S400D 4-channel amplifier. With a continuous power output of 45 watts per channel, your music comes to life with depth and detail. Its compact size allows you to get the sound you deserve without losing any of the sp

Sony XM-S400D Class D 4 Channel Stereo Power Amplifier

Class-D amplification technology for high power

Overload protection circuit and speaker level input

Continuous power output of 45 W per channel (at 4 O)1

Speaker level inputs with power sensing for simple installation

Enjoy powerful audio throughout the entire car, thanks to the 180 Watts total continuous system power (45 W X 4 RMS).

The Class-D Technology is a method to convert and amplify music signals with MOSFETs to high speed pulse signals. Furthermore, it features high efficiency and low heat generation.

Small enough to fit almost anywhere. Dimensions are 6.5in L x 1.5in H x 2.5in W.

Built-in LP (low-pass) filter and HP (high-pass) filter

The XMS400D has a 120Hz high-pass filter for the front channels and a 120Hz low-pass filter for the rear channels.

Protection circuit and indicator provided

This amplifier is provided with a protection circuit that operates in the following cases: When the unit overheats, When a DC current is generated, When the speaker terminals are short-circuited. If a protection circuit is activated, the POWER/PROTECT indicator will flash.

The XMS400D has the ability to connect to a source unit by high (speaker) level or low (RCA) level input.

If you have the factory original or some other car audio unit without a remote output for the amplifier, connect the remote input (REM) wire of the supplied power connection cable to the accessory power supply. With the high level input connection, the car audio unit can also be activated without need for a REMOTE connection.

Power up your in-car sound with the XM-S400D 4-channel amplifier. With a continuous power output of 45 watts per channel, your music comes to life with depth and detail. Its compact size allows you to get the sound you deserve without losing any of the space that you need.

4-Channel Amps

Sony XM-GS4 4/3/2 Channel Stereo Power Amplifier

$249.99

Sony XM-S400D Class D 4 Channel Stereo Power Amplifier

$139.99

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