Thanks a lot for your reply. I read a lot of good things about XR55 on this thread, and want to try it on my system. Btw I have Apogee Centaur Minor speakers (ribbon hybrid) and last year convert them with active x-o, DSP Electro Voice DX34a and fed them with 2 stereo amps. The difference comparing to stock passive cross-over is so drastic that I won't go beck and would like to keep it in the system.
Last year on another forum, found the information that a guy with XR55 successfully drove the Apogee Scintillas (full ribbons, the big one), which are much more demanding speakers than mine. Unfortunately in this part of Europe, Belgrade, Serbia, Panasonic SA- XR55 wasn't present on the market at all. Even within audiophiles, a very few people are aware about digital av-receiver existence like XR55. Few weeks ago I accidentally find one in mega store shop.
Well, I am very curious about that digital sound quality and think to give it a try.
I know, there is one more AD conversion but already has good experience with implementing digital x-o where I have 2 (AD and DA) conversion more.
Thanks again and best regards