For Sale NAD Electronics M51 Digital Analog Converter (DAC)

Further Information

M51 DAC and Preamplifier with remote control

Note: Stand by light has burnt out, all other functions working without issues

https://www.stereophile.com/content/nad-m51-direct-digital-da-converter

extract from Stereophile review

Conclusions
I admit to having been a little suspicious at first of the PCM-to-PWM approach that NAD has taken in the M51. That was before I'd had a chance to live with it for a couple months. Nothing raised an eyebrow, and the claimed benefits in jitter rejection and filter design have obviously paid off.

I prefer DACs that reveal as much as possible about what was captured on the tape or in the digits, and couldn't care less about adding a rose-colored tint to dodgy digital sound. In this regard, the NAD M51 succeeds with a wonderfully detailed and revealing sound best described as honest, with a friendly smile. And it was a pleasure to listen to.

In other words, bitstream brilliance.

NAD web site

One of our Masters Series’ finest components to date, the M51 Direct Digital™ DAC uses the same high precision digital processing as our ground breaking M2 Direct Digital Amplifier, but in a new format that easily interfaces with high performance analogue components, including our M22 Stereo Power Amplifier. With features such as extremely low noise, low distortion, wide dynamic range, superb linearity and exceptionally low digital jitter, the M51 will help bring your home theatre system to life. With the ability to accept PCM data rates up to 24 bit/192kHz, the M51 makes it perfect for listening to high resolution downloads, allowing you to hear your favourite songs in the best audio quality possible. Possessing two HDMI inputs and one output with video pass through, the M51 seamlessly becomes the heart of a video 2.0 system, further displaying the M51’s remarkable versatility and innovation.