Just picked up an ex demo bargain (£280) and received this afternoon. Left it for a couple of hours to warm up to room temp from TNT van temp; powered it up and connected line in straight from the DM+ RCA line outs. First impressions are somewhat staggering. I was hoping for a subtle improvement, although I suspected that the DM+ headphone amp isn't class leading, it's far from bad. The MF on the other hand is stunning, the differences are much greater than I expected. Tonally it's similar, but the level of detail is much higher, so separation of instruments, space and soundstaging are so much more defined and easy to follow. This is a much bigger change sonically than any DAC I've tried in my system, by some margin to benchmark it.