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4-channel Stereo Amplifier XM-GS4

Sony XMGS4


  • High-Resolution Audio compatible
  • Up to 100 kHz frequency range
  • 70 W x 4 RMS rated power output
  • Premium components for superior performance

Quick Specs

  • Type: Amplifiers

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High-Resolution Audio for uncompromising sound Experience digital music to the fullest with High-Resolution Audio. By capturing music at a higher rate than CD, increasing both audio samples per second and the bitrate accuracy of each sample, High-Resolution Audio offers an uncompromised rendition of an artist's music. Savor every breath and subtle movement for a truly emotional experience.

Ultra-wide frequency response for full-range sound The XM-GS4's wideband frequency range-ranging from 10 Hz to 100 kHz-is designed for today's broad variety of music styles. The lower end of the frequency range offers more than enough latitude for even the deepest sub-bass notes. At the high-end, you'll be able to feel subtle sub-harmonies, giving your music more life and realism.

4 channels create a versatile sound stage With a 70 W x 4 RMS power output, this 4-channel stereo amplifier gives you a broader range of options as to how you set up your in-car sound. Using bi-amplification, you can separate bass frequencies from highs or ultra-highs, eliminating distortion that occurs when they play through the same channel. You can also independently adjust the volume of different frequencies to find the perfect balance for each song.

Schottky-barrier diodes for smooth, stable sound Conventional diodes have a voltage drop of between 0.6 and 1.7 V, whilst Schottky-barrier diodes tend to have a maximum drop of 0.45 V. This means that they can deliver faster switching and high-efficiency operation, so you'll enjoy consistently stable power without noise from internal interference.

MOS FET transistor for efficient power delivery The metal-oxide-semiconductor field-effect transistor (MOS FET) is engineered to deliver a high output from a low-current input. This allows it to provide power to the amplifier's circuits quickly and efficiently, for more responsive operation.

Dedicated control section for fine-tuned audio The amplifier's control section, located just under the external cover, provides users with the ability to manually adjust aspects of their in-car sound - including resistance and the level of power flowing through each individual component. The XM-GS4's carefully selected components are highly reliable and noise-resistant, minimizing unwanted distortion. The twisted wire structures help to further cancel in-car noise, providing a cleaner overall sound.

Aluminum case absorbs external vibrations The heavy duty, heat sink integrated aluminum body of this amplifier is designed to prevent external vibrations, for jitter-free sound that stays true to the source.


  • 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
Bass Boost: Frequency (0 - 10 dB) 40 Hz, 0-10 dB
Current drain (A) - rated output power at 4 ohm 33 A
Gold Plated Connectors Yes
Line In: Input Sensitivity 0.3-6
Load Capability (ohm) 2 ohm (Yes)
MOSFET Power supply (Yes)
Speaker Level Input Yes
Subsonic High Pass Filter Yes
CTA Power output 70 W x 4
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
Size & Weight
Dimensions (W x H x D) 272 x 51 x 202
Weight 5.95 lb
General Features
Frequency Response 10-100 kHz
Signal to Noise Ratio 100 dB
Tolerance +0.5/-3 dB
Total Harmonic Distortion at 1 kHz (%) 0.05%
Rated Output Power, RMS 20 - 20000 Hz
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 Configuration at 4 ohms BTL (Bridge-Tied Load) 350 W x 2
Max. Channel Power Configuration at 2 ohms 175 W x 4
Max. Channel Power Configuration at 4 ohm 150 W x 4

Quick Specs

  • Appearance

  • Type: Amplifiers

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Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.