Musical Fidelity M3x DAC

The Musical Fidelity M3x DAC is a high-performance digital-to-analog converter designed to serve as a clean, low-noise digital front end for a wide range of sources. With multiple digital inputs and both RCA and balanced XLR outputs, it fits easily into modern two-channel systems while maintaining a focused, audiophile-first feature set.

PCM sources are upsampled to 192 kHz, and USB playback supports high-resolution PCM and DSD, making the M3x DAC suitable for computers, streamers, and traditional digital components. A robust power supply and heavy all-metal construction are designed to minimize interference and support consistent performance.

Features

• PCM1795 DAC with SRC4392 upsampling chip
• PCM inputs upsampled to 192 kHz
• USB input supports up to 32-bit / 192 kHz PCM
• USB supports DSD256 (stereo DoP and native)
• SPDIF supports up to 24-bit / 192 kHz PCM
• Digital inputs: 1 × USB-B, 2 × coaxial, 2 × optical
• Analog outputs: 1 × RCA, 1 × balanced XLR
• Two digital PCM filters and two analogue DSD filters
• Very low noise, extremely low distortion, and high channel separation
• Super Silent power transformer
• Heavy aluminium front plate with steel chassis
• Made in the EU
• Roon Tested (pending)

Specifications

Digital-to-Analog Conversion

• DAC chip: PCM1795
• Sample rate converter: SRC4392
• Total correlated jitter: < 48 ps peak-to-peak
• Linearity: < 0.2 dB down to –100 dB
• Frequency response: –0.2 dB at 20 Hz; 0.1 dB at 20 kHz; 1.5 dB at 70 kHz
• Channel separation: < –115 dB (10 kHz @ 0 dBFS)
• Signal-to-noise ratio: > 107 dB (A-weighted, 1 kHz @ 0 dBFS)
• Total harmonic distortion: < 0.005% (1 kHz @ 0 dBFS)

Digital Inputs

• 2 × coaxial (up to 24-bit / 192 kHz stereo PCM)
• 2 × optical (up to 24-bit / 192 kHz stereo PCM)
• 1 × USB Audio Class 2.0 (USB-B; up to 32-bit / 192 kHz stereo PCM, DSD256 stereo DoP and native)

Analog Outputs

• RCA line-level output: 1 pair, fixed/variable, 2 V RMS @ 0 dBFS
• XLR line-level output: 1 pair, fixed/variable, 4 V RMS @ 0 dBFS
• Output impedance: < 50 ohms

Power

• Mains voltage: 230 V / 115 V internally set; 100 V optional
• Maximum power consumption: 15 W
• Standby power consumption: < 0.5 W

Dimensions and Weight

• Dimensions: 440 × 100 × 363 mm (W × H × D)
• Weight: 6.8 kg

What’s in the box

• Musical Fidelity M3x DAC
• Power cable