XM-4ES | Mobile ES™ 4-Channel Power Amplifier

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100W x 4 RMS output power

Enjoy dynamic sound with an output power of 100W x 4 (330W x 2 bridged) RMS at 4 ohms / 165W x 4 RMS at 2 ohms. The highly efficient class-D amplifier provides a variety of speaker configurations to suit any car and impress any audio enthusiast.

The Way The Artists Truly Intended

Listen to the subtlest nuances of studio-quality sound in higher than CD quality with High-Resolution Audio. Feel as if the artist was performing right in front of you. The XM-4ES 4-channel amplifier is engineered to enhance every track — including High-Resolution Audio files. A range of premium circuit components work together for ultimate efficiency and pitch-perfect sound reproduction, giving every road trip the soundtrack it deserves.

Powerful sound with astonishing clarity

Sony’s expertise and long years of engineering experience with digital amplifiers has made it possible to realize a compact and powerful amplifier, with uncompromising sound quality.

Optimised power blocks

The power supply block is optimally designed for low-noise, highly efficient electric power transmission, where the DC converter with a toroidal core transformer is chosen for less electro-magnetic interference. To reproduce delicate ultra-high-frequency sound, each channel block and the class-D amplification are all isolated with their own ground circuitry, minimising any signal interference.

Select components for superior sound

The upgraded inductors with OFC wires are selected for lower internal resistance and improved sound character, while the high-capacity electrolytic capacitors contribute to precise and responsive bass.

High-quality speaker terminal

The speaker terminal features Hex-key screws, providing a durable method of tightening the wire connections while accepting bare wire or wire ferrules (up to AWG #8) for superior electrical performance and high-quality sound, and safe connection.

Enhanced logical control and connection placement

Controls for adjustments, and placement of connections, are logically placed for easy understanding and use. Updated grouping allows for intuitive operation, while common connections are placed together for installation simplicity.

Sturdily built structures

The bottom plate with 1.2 mm thickness and its updated cross-bracing press design improve chassis rigidity at approximately 50 %, reducing the resonance and shifting resonance peak out of vehicle’s harsh vibration frequency band while improving damping performance dramatically.

Signal summing for seamless connection to factory audio

The new signal summing feature combines filtered audio signals from modern factory car audio systems, such as those for the separate tweeter, woofer and subwoofer, accurately amplifying the full stereo frequency range easily. And you can even send the consolidated line-level signal onto other mono or stereo amps in the chain, allowing for flexible installation in various types of vehicles and audio system setups.

Clear labels and values

The redesigned control panel features logical placements with easy-to-understand correlation, and updated graphics.


Meet the XM-4ES High-Resolution Audio compatible Mobile ES™ car amplifier. Optimized circuit design layout and carefully selected components provide exceptional quality sound and performance. Enjoy the power and dynamics of 100W x 4 (330W x 2 bridged) RMS power, and the new signal summing feature with combined pre-outs for seamless installation in a variety of vehicles.
  • 100W x 4 (330W x 2 bridged) RMS output power at 4 ohms

  • 165W x 4 RMS output power at 2 ohms

  • High-Resolution Audio compatible

  • Signal summing for seamless connection to factory audio and combined pre-outs

  • Updated connection terminals and control panel

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