Stereocheck Reviews:

Musical Fidelity M6S DAC: Promises the highest quality sound

The Musical Fidelity M6S DAC external digital-to-analog converter is built with chips capable of handling PCM signals up to 32-bit/768 kHz, and performs data resynchronization to reduce jitter....

Musical Fidelity M6S DAC
Musical Fidelity M6S DAC

The Musical Fidelity M6S DAC external digital-to-analog converter is built with chips capable of handling PCM signals up to 32-bit/768 kHz, and performs data resynchronization to reduce jitter. Musical Fidelity M6S DAC supports DSD64/128. All input PCM streams are upsampled to the maximum resolution of the chip, that is, up to 32 bits/768 kHz. The DAC is equipped with three coaxial and three optical inputs, as well as a USB interface for connecting to a computer.


The circuit is built on a dual mono topology and is fully balanced, using four 32-bit stereo DACs. The power supply is stabilized with a digital voltage regulator. The distortion level at 20 kHz is only 0.0004%, and the signal-to-noise ratio is no worse than 119 dB. The device is equipped with a built-in high-quality headphone amplifier. Balanced and unbalanced outputs can operate in either linear or variable mode, allowing the DAC to be used directly with active speakers or power amplifiers.

Engineers were able to achieve high accuracy in restoring digital audio data to analog form by using high-quality LME 49720 operational amplifiers manufactured by Texas Instruments in the signal circuits of the converter. They are characterized by increased linearity, transfer characteristics and low nonlinear and phase distortion coefficients.


To reduce noise and improve conversion accuracy, all Musical Fidelity M6S DAC circuits are powered by a high-quality, stabilized source. The use of a precision digital voltage regulator in it allows you to obtain impeccable sound quality that does not depend on the dynamic range of the input signal, the stability of the mains voltage and the level of industrial noise in it. All input signals are processed by the proprietary “intelligent data clock recovery system”, which strives to minimize the jitter that introduces distortion into the audio signal. The power supply is also made using the proprietary Musical Fidelity method: a filter choke at the power input is designed to eliminate the negative impact of power supply noise.


The converter has a fairly open sound, where exemplary coherence is combined with pleasant sound comfort. The device does not force dynamics, but scrupulously tries to reveal the essence of any musical work. It works quite diligently in the lower range, the bass is moderately energetic and readable in terms of structure. The only thing that can be noticed upon closer listening is a slight decrease in intelligibility at the very bottom of the working band. Artifacts are almost completely absent in the upper register even on mediocre phonograms. The trebles are exemplary clean, and the copper shimmers incredibly naturally. The middle, traditionally for Musical Fidelity, is worked very skillfully. In addition to the high resolution in this spectrum, it is necessary to note the enviable tonal fidelity and the absence of a hard digital patina. The scene is built very large, with a clear foreground and readable distances. The images are slightly larger than usual. Musical Fidelity engineers created the M6S DAC digital-to-analogue converter specifically for those who want to enjoy the highest quality sound, regardless of where their digital audio data is stored.

Characteristics Musical Fidelity M6S DAC 

Frequency range +0, -1dB 20Hz to 50kHz
Signal / noise 115 dB
Converter 32/768 bit/KHz
Analog output 1
Balanced output 1
Digital optical 3
Digital coaxial 3
USB interface
Dimensions (WxHxD) 440 x 100 x 380 mm
Weight 6.9 kg