M51

About the M51

The NAD M51 Direct Digital DAC is a reference-class digital-to-analog converter and digital preamplifier designed for audiophiles seeking uncompromising sound quality and system flexibility. Utilizing a unique Direct Digital architecture, the M51 converts all incoming PCM signals to a high-speed PWM signal at 844kHz and 35 bits, ensuring extremely low distortion and high accuracy. It features a 35-bit digital volume control that allows it to function as a digital preamp, capable of driving a power amplifier directly without loss of resolution. The M51 offers a wide range of digital inputs, including USB, AES/EBU, coaxial, optical, and two HDMI inputs, plus HDMI video passthrough. Balanced XLR and unbalanced RCA outputs provide connectivity to any high-end audio system. With support for sample rates up to 192kHz and a signal-to-noise ratio of -123dB, the M51 delivers transparent, detailed, and dynamic sound. Its robust build quality and versatile connectivity make it a standout choice for both stereo and high-quality two-channel home theater setups.