OS 27 not making USB connection with my Focal Arche DAC. Has been working just fine for previous OS. Fix?
afg1947
User level: Level 1 (4 points)
User level: Level 1 (4 points)Problem with Focal Arche
Posted on Sep 20, 2026 8:02 PM
2 replies
MrHoffman
User level: Level 10 (169,253 points)
User level: Level 10 (169,253 points)Sep 20, 2026 8:33 PM in response to afg1947
Contact the hardware vendor as a starting point.
The following reports it as discontinued, and it was reportedly having issues with USB some years ago:
Per one thread: “I was recently informed that the reason Focal dropped the Arche and isn’t able to fix the USB issue is because Focal partnered with Micromega on the Arche and then Micromega went out of business.” and “If you read through this thread, you will see that the Arche has been rife w/ problems. Focal appears to have given up on support for fixing those problems. Caveat Emptor.”
I would try loading Rosetta manually, if that is not already present.
afg1947
User level: Level 1 (4 points)
User level: Level 1 (4 points)Sep 21, 2026 10:51 AM in response to MrHoffman
Thanks for the info. Was able to fix the problem with the usual routine of unplugging stuff and then re-connecting them.
Originally posted at discussions.apple.com/thread/256361585