XM-4ES

Superior sound in a compact design

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 100 W 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.

mobile ES logo
Find out about our passion and uncompromising technology.
100 W x 4 RMS output power

Enjoy dynamic sound with an output power of 100 W x 4 (330 W x 2 bridged) RMS at 4 ohms / 165 W 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.

High-Resolution Audio icon
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.

Optimized 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, minimizing any signal interference.

Internal view of the XM-4ES Mobile ES 4-channel power amplifier power supply block
Internal view of the XM-4ES Mobile ES 4-channel power amplifier upgraded inductors with OFC wires
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.

Sturdily built structures

The sturdy aluminum frame and solid (1.2 mm) bottom plate reduce vibration and wick away heat, resulting in low resonance and a tightly controlled musical performance.

Example displaying the difference between frames of a conventional model and the Mobile ES amplifier model
Conventional model
Example displaying the difference between frames of a conventional model and the Mobile ES amplifier model
Mobile ES amplifier
Enhanced logical control and connection placement

Controls for adjustments, and placement of connections, are logically placed for easy understanding and use. The carefully considered layout ensures both intuitive operation and installation simplicity.

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.

View of the XM-4ES Mobile ES 4-channel power amplifier speaker terminal features
Clear labels and values

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

View of the XM-4ES Mobile ES 4-channel power amplifier control panel features
Input/output adjustments

Easily integrate the XM-4ES into your system with clear input and output settings.

View of the XM-4ES Mobile ES 4-channel power amplifier control panel features
Filter/range adjustments

Filter parameters are grouped for seamless sound tuning.

View of the XM-4ES Mobile ES 4-channel power amplifier control panel features
Easy operation

The clear, high-contrast labels make adjustment quick and easy, so you can get your system sounding great, faster.

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.

Image displaying the new signal summing feature
Case 1—Connection to factory audio with no frequency filters.

Factory Front: 20 Hz–20 kHz Factory Rear: 20 Hz–20 kHz

Image displaying the new signal summing feature
Case 2—Connecting to factory audio with filtered output signals for stereo high and low, coupled with the Mobile ES mono amplifier XM-1ES utilizing the combined pre-outs from the XM-4ES to drive a subwoofer. 

Factory Front: 5 kHz–20 kHz Factory Rear: 20 Hz–5 kHz

Mobile ES Series

Immerse yourself in excellent in-car entertainment

Engineered for ultimate listening pleasure on the road, the Mobile ES Series products bring the very best of your music and connectivity together, for a driving experience like never before.

Specifications and Features

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 100 W x 4 (330 W x 2 bridged) RMS power, and the new signal summing feature with combined pre-outs for seamless installation in a variety of vehicles.
  • 100 W x 4 (330 W x 2 bridged) RMS output power at 4 ohms

  • 165 W 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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