Fantastic DAC/pre-amplifier M51 from NAD Masters Series, bought 12 Oct 2013 (faktuur available) so guarantee expires 11 Oct 2018, and in like-new conditions. Works extremely well also as pre-amplifier feeding directly a power amplifier (I used it with an Audia Flight 50). Two HDMI inputs with passthrough in addition to standard digital inputs. Second remote control included, very useful since there is no manual volume control. Built like a tank, this DAC will last forever. Plenty of great reviews on web. It can also be sent by post (cost for the buyer) in original double box.