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Find out about our passion and uncompromising technology.
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.
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, 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.
Sturdily built structures
The sturdy aluminium frame and solid (1.2mm) bottom plate reduce vibration and wick away heat, resulting in low resonance and a tightly controlled musical performance.
Conventional 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.
Clear labels and values
The redesigned control panel features logical placements with easy-to-understand correlation, and updated graphics.
Signal summing for seamless connection to factory audio
The new input selector can combine stereo audio signals into a monaural signal, before filtering to low-end. And you can even send the consolidated or passing through line-level signal onto other amps in the chain, allowing for flexible installation in various types of vehicles and audio system setups.
Case 1
Connection to factory audio with no frequency filters.

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