I did notice a difference in SQ when runing the A1400 with the 3808 over the 3808 alone, was it worth the $ to get an A1400 only when I no longer have other things to spend $3000-$4000 on.
I am interested in trying the pro amps as well to see if they give the same dynamics I heard with the A1400, for some reason I doubt that I will.
FYI, the 3808 has an upgrade available that has the features previously mentioned. You have to call Denon and ask about the feature pack upgrade, pay $100 and then run the update from the options menu.
I notice more seperation in the sounds when running the 3808 with Audyssey than with out depending on the source/music, but I also sometimes notice the bass lacking on some material. Audyssey is not perfect but try rerunning Audyssey and follow the set up routine found on AVS forums for Audyssey, it might help with the SQ you are looking for.
