What exactly do you mean when you say audio out? The WiiM Mini has an optical S/PDIF output and an line level input (combined into the same socket). Both carry audio signals, one digital, the other analogue.
Don't know what mini you have, but mine has aux in, aux out and spdif out as separate ports
it's still true that using the AUX OUT from a WiiM Mini into the LINE IN of a WiiM Ultra makes absolutely no sense, unless the optical S/PDIF input is already occupied by another device (e.g. CD transport).
Why connect them physically at all?Yep, that means two audio outputs to chose from (like I mentioned in my original reply) and we still don't know which of them the OP was referring to.
Apart from my senior moment confusing the WiiM Mini with a Mac Mini
But since OPmis asking which connection to use I assume he has the choice.
The only reasons I can think of for connecting the Mini to the Ultra are a) AirPlay support and b) adding a second line input to the Ultra (which again doesn't make sense when if not using the optical connection).
Technically the optical connection would provide higher sampling rate and higher bit depth.
“Personally, I would probably go with the optical connection, if this input is still available on the Ultra.”I read the text against anything, but what makes you think I've been assuming that screenshot was from the Mini configuration?
I might just be too stupid, but how do you know if @buitbyty has some other device plugged in the optical input of the WiiM Ultra already or if this input is still available to connect the Mini?
