Hi, sorry it took so long to look back here, and answer your question.I'll be curious how this works out for audio, with the Toslink or Coax digital outputs. Does the OS recognize the digital output and let you manage it?
I ended up returning the Apple M1 Macbook Pro before the cables arrived and before I could test the Toslink/Coax outputs. Everything else on the Hyperdrive Gen2 Thunderbolt3 docking station worked so well I trust their Toslink / Coax ports are awesome too:
A couple of things gave me pause when deciding whether to keep the Macintosh M1 Macbook Pro or send it back as the return period got closer.
The 13" size of the screen in practical use was way too small for me.
I kept the Macintosh M1 Macbook Pro in a vertical stand with my Samsung S6 tablet and used the Hyperdrive dock display port output to my 27" 1080p 144hz monitor, and the Macbook synced up fine. But, when I tried to use the laptop on it's own, the screen size was annoyingly small. I'm used to 17.3" and 18.4" laptop screens. At worst a 15.6" work laptop screen. But the M1's 13" screen was simply too tiny for me.
The dumbest problem was Apple's Security - my AppleID kept getting invalidated every day - sometimes a couple of times a day - and MacOS depends on "phoning home" constantly using that AppleID. MacOS features would stop working starting at boot when my AppleID was rejected! At first, I thought it was a single event, but it continued constantly after it started.
I called Apple a number of times and they couldn't figure out what was going on. They wanted me to confirm my ID with my "iPhone" - and when I said I didn't have an iPhone, they were at a loss as to how to fix the problem.
I wasn't about to buy an iPhone just so I could stabilize my Apple ID! Crazy Bad Apple!
I would heartily recommend all the accessories I bought for the M1, especially the Hyperdrive equipment USB and Thunderbolt docks.
I do not recommend the Apple M1 with the too-small screen, or MacOS's reliance on "phoning home", or AppleID Security, or Apple Support for that matter - it is crazy that they couldn't fix a simple account validation problem. What a waste of time that all was.
Up until the unending AppleID Security annoyances began I was considering upgrading to the Apple M1 Macbook Pro 16"/17" when it came out, but now I am not interested in investing in Apple Macintosh hardware again until Apple fixes the AppleID account validation problems for us, non-iPhone users.