+1 with Kbarkamian...
I commented on another identical thread like this and concluded that my optical connection certainly sounded better. There seemed to be something extra mixed into the sound when I hooked up the coax. So for cd/dvd/blu-ray playback I run optical into the dac. I'd run optical from the sonos but considering the bit stream is only at 192k/b and I only have one optical connection on my dac I just use the coax on that. In a way I think the coax works better for the sonos because it mushes the incoming signal just enough to make it sound better. :)
I commented on another identical thread like this and concluded that my optical connection certainly sounded better. There seemed to be something extra mixed into the sound when I hooked up the coax. So for cd/dvd/blu-ray playback I run optical into the dac. I'd run optical from the sonos but considering the bit stream is only at 192k/b and I only have one optical connection on my dac I just use the coax on that. In a way I think the coax works better for the sonos because it mushes the incoming signal just enough to make it sound better. :)