My objective is to achieve uncompressed music distribution from a CD player to 6 Sonos speakers, using an optical line-in. My CD player is connected via Toslink to my Playbar. My Playbar is grouped with my 6 Sonos P1's and P3's and I can hear music from each of those 6 speakers.
Question 1: Is the Playbar is streaming uncompressed WAV files to the 6 speakers, or is it using the SBC codec to compress?
Question 2: Within the app there is the option to select 'compressed' or 'uncompressed'. I would expect selecting 'uncompressed' to delay the sound approximately 2 seconds (as is the case using an analogue line-in to a Sonos connect). But this doesn't happen. The sound is either not delayed two seconds, or is equally delayed on 'uncompressed' or 'compressed' settings. Changing from 'c' to 'uc' makes no difference.
Question 3: When pausing the source music on the CD player sound on all Sonos speakers stops immediately. When I unpause the CD player it takes about 2 seconds for sound to reach the Sonos speakers.
My observations in 2 and 3 make me suspect that the 6 Sonos speakers are receiving SBC compressed sound from the Playbar. Please confirm.
[For the avoidance of doubt, although my configuration involves a Playbar, there is no TV and no surround speaker setup]
Grateful for any help received, cheers.