On my Arc Ultra, I reliably see when a track from Apple Music is lossless. However, the same track in a different room (Paired Sonos Ones with Sub Mini) does not appear to be lossless. I have adequate badwidth, and all apps/firmware are updated.
One of the One’s is hardwired to my router. Not sure if that makes a difference either way. I believe the speakers are connected wirelessly over Sonos Net, including the Arc Ultra.
According to the latest message from Apple, my speakers should support lossless. Any suggestions? Thanks in advance.