The Sony Mobile ES XM-4ES is a premium 4-channel Class-D amplifier engineered for audiophile-grade sound quality, OEM integration, and high-power full-range performance. Part of Sony’s flagship Mobile ES lineup, the XM-4ES is designed for SQ enthusiasts wanting exceptionally clean output, strong dynamics, and Hi-Res Audio capability in a compact chassis Main Features 4-channel Class-D amplifier Hi-Res Audio compatible 100W x4 RMS @ 4Ω 165W x4 RMS @ 2Ω 330W x2 bridged @ 4Ω Signal summing for OEM integration Combined pre-outs for amplifier chaining Differential balanced inputs Variable HPF/LPF/Bandpass crossovers Toroidal-core power supply OFC-wound upgraded inductors Hex-key speaker terminals Compact chassis design Optimized isolated grounding layout Specs Specification Details Amplifier Class Class-D Channels 4 RMS Power @ 4Ω 100W x4 RMS Power @ 2Ω 165W x4 Bridged Power @ 4Ω 330W x2 Frequency Response 10Hz – 40kHz Hi-Res Audio Compatible Yes Signal Summing Yes Crossovers HPF / LPF / Bandpass Speaker-Level Inputs Yes Differential Inputs Yes Dimensions Compact Chassis Approx. Shipping Weight ~10–14 lbs Installation Notes The XM-4ES performs especially well with: DSP processors Active front stages High-end component speakers OEM integration systems Sony Mobile ES speaker systems
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