Thanks to you both for your replies.
@redlenses03 , your link to head-fi was helpful. It appears Macs and May dacs have had incompatibility issues. I wish i knew that before purchase.
Kitsune or should i say Magna hifi appear to be rolling out firmware updates for screeching sounds on Windows machines, but it doesn't really help the mac users since device drivers aren't required in the first place. If a firmware update to the May was availble, I'd certainly give it a try.
I have a support ticket into Kitsune, but wonder if I'm going have to unload this unit or try some usb to coax or optical converter,, which will defeat the purpose of having the "upgraded" Titanis USB on the level 2.
If i can find a solution, Ill report back for any other mac users out there.