Originally Posted by
SteveW
Just my twopenny worth... and apologies if I am completely wrong.
However i have been running a Mac mini with Audirvana on it into a valve DAC (built by Duncan/tubehunter as it happens).
Anyway the machine asked me if I wanted to upgrade the operating system, which I naively did.
Up to that point the DAC had played brilliantly through the optical out.
Following the ‘upgade’ The optical out was no longer recognised. Seems to be something to do with the way that the latest macs work... apparently.
Anyway because I bought the Mac mini second hand I can’t revert back to the older operating system.
I gave up in the end. Sad really as it sounded excellent.
Have no idea if you are facing the same issues Al, but thought it worth sharing the experience
Cheers Steve