Jim,
I am getting excellent SQ with a MBP running 10.7.5 into a W4S DAC2. Soundstage doesn't sound quite as deep with MC, but it has better definition compared to Amarra. The overall presentation is amazing, particularly a huge improvement playing Redbook rips in AIFF. The code is clearly rough, but I see great stuff on the horizon for the Mac version!
Lots of bugs, not sure where to post these. The two most annoying are:
1. Audio glitches about every 40 seconds. They seemed to start about 10 minutes into the listening session.
2. I can't exit MC without resorting to force quit (the Media Center control pull down turns blue instead of opening the pull down menu)
Thanks for making this Mac version available and let me know how to contribute on issue reporting
Todd