I'm not sure if I'm the person to answer this, as I don't quite know what you're attempting to do. However, since nobody has responded to this, I will. I see a Dolby Digital 5.1 signal via Comcast showing up as 48kHz, the Pandora signal as 44.1kHz PCM and some SACD's at 96kHz DSD. I haven't found anywhere to show the bit depth, but then again I'm a retired "Old Fart", who's only owned this SC-1522 for a little over a week and am still "plodding" my way around this somewhat complex (for me) receiver.
Edit) Even though I have very few posts, I have been a member for over 5 years and find AVS an invaluable source of information. I started reading this thread near the start, and it really what swayed me to try a Pioneer, since I have owned nothing but Onkyo (605,606,706,708) since my retirement about 6 years ago. I really would have liked to buy an 11 channel capable receiver, but just couldn't see parting with $2K plus. I'm quite happy with the SC-1522 so far, setup in 9 channel with heights and am looking forward to adding wides next week, since I'm now pretty sure that most everything works properly. I found that I preferred Neo 6 in my previous Onkyo's, and absolutely love Neo X in this Pioneer. I have an an all Klipsch system, which should tell you that I like a "bright" sound, but this SC-1522 (and Neo X) have woke up everything. It was a great purchase and I'm really looking forward to using some of the functions of "Advanced MCACC.