That's good to know. I wish I could find something that's known to work with the Mac that has USB, SPDIF, Toslink, BT, headphone out (with gain) and balanced outputs. I'm still going round and round with my SMSL reseller trying to get a resolution to this issue.Had the C200, too. Replaced it with the SMSL C100 (and a suitable amplifier) which has a XMOS XU-316. It works perfectly fine now.