With the M66, NAD has given audiophiles a preamplifier that’s a fit for both streaming and vinyl playback – and a fine match for the mighty M23 power amp of its flagship Masters series. A host of connections, including HDMI ARC and dedicated MM and MC phono inputs, gives the M66 the flexibility to stand out in a crowded market, as does its 175mm touchscreen display; control NAD’s preamp here, or through the refreshed BluOS app with its multitude of streaming services. To top it off, the M66 supports connection of up to four subwoofers, expertly integrated through Dirac Live Bass Control. This opens the door to a huge sonic performance leap, taking an already fine-sounding DAC/streamer/preamp to another level.