NAD M51 Silver

NAD's Direct Digital™ technology is unique in both its extreme precision and in its speed. This advancement was first introduced in the NAD M2 Direct Digital Amplifier to worldwide acclaim. Now this innovative Direct Digital™ technology is available as a standalone DAC. Instead of using the Direct Digital™ processor to drive a high power output stage, we employ a line level analogue output that will perfectly interface with any analogue system with the M51 Direct Digital DAC.

How Direct Digital™ Operates

NAD's technology uses a very powerful processing engine that operates at much higher speed and with much greater accuracy than typical Digital-to-Analogue converters. Running at 108MHz, the M51 resamples the incoming pulse code modulated (PCM) signal and converts it to a pulse width modulation signal (PWM) with a sampling rate of 844kHz. Operating in a differential mode with double precision, the M51 has state-of-the-art specifications for low noise and freedom from distortion. The extreme headroom afforded by the 35-bit architecture allows for a DSP-based volume control that does not reduce resolution. Even with 24-bit high definition signals, the output can be attenuated by 66dB (very, very quiet) before bit truncation begins.