About: Sony XM-GS4 4-Channel Car Amplifier - 70 watts RMS x 4

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. 

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.

Specifications:

• 4-channel car amplifier
• 70 watts RMS x 4 at 4 ohms (80 watts RMS x 4 at 2 ohms)
• 160 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
• CEA-2006 compliant
• frequency response: 10-100,000 Hz
• separate variable high- and low-pass filters for front and rear channels (50-300 Hz, 12 dB per octave)
• separate variable subsonic filters for front and rear channels (6-70 Hz, 12 dB/octave)
• separate bass boosts for front and rear channels (0-10 dB at 40 Hz)
• preamp and speaker-level inputs
• cooling fan
• fuse rating: 30A x 2
• 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
• Dimension (W x H x D): 10-3/4" x 2-1/8" x 8"