Sony XM-GS4 GS-Series 4-Channel High-Resolution Amplifier

Model: XM-GS4 UPC: 027242888982 Item: 170857


Out of Stock

More Product Details

Our product experts are here to help

Questions? We're here to help.

Product Information

XM-GS4 GS-Series 4-Channel High-Resolution Amplifier

The Way The Artists Truly Intended

Enjoy the subtlest nuances of studio-quality sound in higher than CD quality with High-Resolution Audio. Passion for music unites every component from signal to speaker so it feels like the artist is performing right in front of you.

Bring Your In-Car Audio to Life

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 100kHz. 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 100kHz.

4 Channels of Dynamic Sound

Enjoy powerful audio throughout the entire car thanks to a 70W x 4 RMS power output.

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.


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


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.

Noise-Resistant Potentiometers

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

Schottky-Barrier Diodes Enhance Audio Stability

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

Low- and High-Pass Filters

Sony's 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.

Supercharge Your Favorite Songs with 4-Channel Amp

Enjoy 70W 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.

Combine Premium Components for Unrivaled Acoustics

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

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.

Discover How Sony Redefines In-Car Sound Quality

Sony's new in-car audio range — including the RSX-GS9 media receiver, XM-GS4 amplifier and XS-GS1 super tweeter — will forever change the way you listen to music in your car.


  • High-Resolution Audio compatible
  • Up to 100 kHz frequency range
  • 70 W x 4 RMS rated power output
  • Premium components for superior performance
  • Low and high pass filters for accurate sound



Size & Weight

  • Dimensions (W x H x D): 272 x 51 x 202
  • Weight: 5.95 lb


  • Channel Configuration: 4ch/3ch/2ch
  • High Pass Filter: 50–300 Hz (Variable)
  • High-Pass Filter Slope: 12 dB/oct
  • Low Pass Filter: 50–300 Hz (Variable)
  • Low-Pass Filter Slope: 12 dB/oct

Rated Output Power, RMS 20 - 20000 Hz

  • Max. Channel Configuration at 4 ohm (W) / THD (%): 70 W x 4 / 1.0%
  • Max. Channel Configuration at 2 ohm (W) / THD (%): 80 W x 4/1.0% (1 kHz)
  • Max. Channel Configuration at 4 ohm (W) / THD (%): 160 W x 2/ 1.0% (1 kHz)

Maximum Output Power (1 kHz)

  • Max. Channel Power Configuration at 4 ohm: 150 W x 4
  • Max. Channel Configuration at 4 ohms BTL (Bridge-Tied Load): 350 W x 2
  • Max. Channel Power Configuration at 2 ohms: 175 W x 4

General Features

  • Frequency Response: 10-100 kHz
  • Tolerance: +0.5/-3 dB
  • Signal to Noise Ratio: 100 dB
  • Total Harmonic Distortion at 1 kHz (%): 0.05%


  • CEA Power output: 70 W x 4
  • CEA SN Ratio: 93 dBA
  • Load Capability (ohm): 2 ohm (Yes)
  • MOSFET: Power supply (Yes)
  • Subsonic High Pass Filter: Yes
  • Bass Boost: Frequency (0 - 10 dB): 40 Hz, 0–10 dB
  • Speaker Level Input: Yes
  • Line In: Input Sensitivity: 0.3–6
  • Gold Plated Connectors: Yes
  • Current drain (A) - rated output power at 4 ohm: 33 A

What's in the Box

What's in the Box:

  • One XM-GS4 amplifier
  • Speaker level input harness
  • Mounting hardware
  • Owner's manual



Customer Reviews for Sony XM-GS4 GS-Series 4-Channel High-Resolution Amplifier

4.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Excellent clarity and presence.
I had this installed in my Volvo wagon a month ago and suddenly I hear fingers on strings. An excellent choice to improve listening in a car.
July 2, 2020
Originally posted at
Sony won't honor warranty shipped in box XM-GS4
The Sony XM-GS4 shipped with a 3 year limited warranty (US and Canada). I purchased the amplifier on 10/29/2017 from an authorized retailer and tried to get a warranty repair for a dead channel on 1/30/2020. The customer representative insisted the warranty is only for 1 year and would not connect me to a manager to discuss the conflicting information, he just kept referring me to what his "system" says.
January 30, 2020
Originally posted at
New powerfull amp
Hi sony its timo to make new amplifire with 80 rms
September 19, 2019
Originally posted at
Wonderful sound and noise free.
This amp has transformed my car system. The prior amp had an alternator whine that I could not resolve. A simple swap to this Sony amp and voila! No noise and a better tone. Sweet bass, clear midrange and sparkly highs.
May 5, 2019
Originally posted at


Customer Q & A

Have a functionality, compatibility, or otherwise product-specific question about this product? Ask it here! If you have a customer service or shipping question, please direct it to our customer service department

Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!