A quiet day here at GrangeLoo High School, so my mind lolled around the notion of what would sound better? My Allman Brothers SACD played in, 1) my PS3 optically connected to my DAC 2) my CD player coaxially connected to DAC 3) Lossless files streamed to AE and optically onto DAC. Any one? Theoretical reasons? I can do the practical later on, but for now, it's back to reading The Grauniad and drinking stewed Assam.