I'm buried at work right now, but I'll try to pop back in here later and offer what insight I can muster on this subject. For the moment, suffice to say that the 885, 886, and 950 do not have any A/D/A conversion for the multichannel analog inputs. That's why Audyssey is impossible with the 885 and 886 using the multichannel analog, and why digital bass management is impossible with all of them. Stereo analog inputs are a whole different matter, but I don't think we're talking about that here.