Just unpacked the little bugger and hooked it up to my Oppo SV970HD's sacd stereo outputs. The digital out of the Oppo is connected via a toslink connector to my Denon AVP 5000 pre-amp, which I no longer use except for headphoning
It has separate DAC's for each of it's seven inputs so I can use all my older gear with the Micro amp as well as the Oppo. Haven't had time to burn the Micro in yet but so far the improvement over the Total AirHead I've been using for three years is astounding. No REALLY, I'm not kidding. My HD580's with the Micro have improved immensely. I'm hearing a clarity and space in the sound stage I never knew existed! Sweet highs with no subliminal grunge and rock solid bass. This was an impulse buy for me and I wasn't expecting this much improvement. Now you couldn't get the micro amp away from me unless you pried it out of my cold dead hands
Headroom, I'm a believer.....