Musical Fidelity
M6x DAC
Introduced 2022$2,599 MSRP
The Musical Fidelity M6x DAC is a dual-mono DAC/headphone amplifier from the British high-end brand, built around two ESS ES9038Q2M chips in dual-differential mode with a current-feedback Class AB headphone output stage. It combines full MQA decoding, native DSD512 support, and a 32-bit/768kHz-capable USB input with a dedicated 6.35mm variable headphone output.
MSRP
$2,599
Used market · Excellent
$1,350
-48% vs MSRP
as of Sep 1, 2026MSRP to used market
From $2,599 at launch to $1,350 today.
Specifications
- Weight
- 6.9 kg
- DAC chips
- 2× ESS ES9038Q2M in dual-differential, dual-mono configuration (32-bit Hyperstream II)
- Dimensions
- 440 × 100 × 390 mm (W × H × D)
- Headphone THD
- <0.005% at 1 kHz @ 0 dBFS
- Analog outputs
- 1 pair fixed/variable RCA (2V RMS @ 0dBFS); 1 pair fixed/variable balanced XLR (4V RMS @ 0dBFS)
- Digital inputs
- 1× coaxial, 2× optical (up to 24-bit/192kHz + MQA), 1× AES/EBU, 1× USB-B (up to 32-bit/768kHz PCM, MQA, DSD256 DoP, native DSD512)
- Headphone output
- 1× 6.3 mm jack, variable level, recommended for headphones ≥16 Ω
- Measured distortion
- 0.00020% at 1kHz/0dBFs; 0.00027% distortion+noise at 20kHz/0dBFs
- Headphone amp topology
- Current-feedback Class AB architecture
- Headphone output power
- 1.5 W per channel into 32 Ω
- Headphone frequency response
- +0.1 dB / −0.4 dB, 20 Hz–20 kHz
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