Just recently purchased HM-801 and am really enjoying it.
On occasion, I'd like to use as a DAC with my MacBook Pro (Coax not USB).
I purchased this converter:
I've tried several different toslink cables with a mini-optical adapter to my MBP.
With 24/96 Flac files playing with Vox or Audirvana I get some clicks and pops, but no sound.
If I change the output to 24/48 I get audio.
If I run 24/96 via toslink out of my MBP into my Denon DVD-5000, then 24/96 via toslink from the Denon to the M-Audio converter, and finally into the HM-801 it seems to work perfectly.
I just don't understand why it won't work with the Denon out of the loop.
I'm doing more testing, but any insight would be greatly appreciated.