NAD M51 - is the newest digital to analog converter with 35-bit performance, 844 kHz, which supports the USB-HD codec for the transmission of audio (24 kHz bit/192). The unit is also able to transmit audio through the HDMI interface, and can act as a full-fledged digital preamplifier. All this thanks to a complete set of inputs and «DSP-volume control" of high quality. In the M51 used proprietary technology NAD Direct Digital.   read more