Using my Digital Interface to feed both, the Master 7 via I2S (using an internal cable through the top of the M7) and the Hugo via coax, I could A/B them easily, volume matched, through the Studio Six. I felt that the Hugo was a bit smoother/cleaner/clearer sounding than the Master 7. I think that to get the same with the M7 I'd probably need to use an OR5. What I sometimes want in a DAC was one with the clarity of the M7 but the smoothness of the NOS1704, so I've long been pondering getting an OR5 to remove that last touch of hardness. The Hugo is that IMO. The Master 7 is for me, everything I wanted in a DAC, without having to compromise. The Hugo is that, but a bit more so still.