SBT arrived today & about 15 min. later I was streaming a playlist of mp3 content ranging from 192/256 & 320kbps through the HK 7550hd AVR. Sweetness. Of course, I've been obsessed the last 3 days re-organizing my mp3 library (big task ahead cleaning up the artwork for existing content, not to mention ripping cd collection to flac).
Connected both RCA analog & digital coax outs from SBT to the HK. Using monster cable for both connections (only mentioned cause they're expensive & certainly look & feel high quality). Did some "un-broken-in", initial a/b listening with mp3's of each bit rate to test the sound using the SBT DAC (analog out) vs. the Cirrus 24/192 DAC in the HK (coax). Surprisingly, using the SBT DAC & analog out sounds fantastic in my setup. The analog connection sounds dare I say "warm" pumping concrete blonde through my polk Rti7's. The coax connection is crystal clear, almost too clear, bringing out the small subtleties the lossy mp3's. I'll need to feed the HK DAC hi-res lossless content, otherwise it will bring out all subtle imperfections in the source media. On the other hand, using the SBT analog out for my lossy mp3's sounds really good, no harsh edges, almost "warm". Very pleased. Awesome product, lots more to play with, haven't even gotten to flac, Mog, pandora yet!
EDIT: Started ripping CD's to FLAC with dbPowerAmp this evening. <-This is a fantastic software application, which I'll surely be licensing after the trial period. Also listened to lossless FLAC through the SBT for the first time & must say wow, what a difference! I switched over to using my HK's DAC (using SBTcoax out) & the lossless files sound amazing. You guys were right, lossless is the way to go.. gonna need more disk space at some point. Bad A$$!