I am under the inpression that THX standards require extremely strict adherance to room type, accoustical qualities, equipment certification, etc. Does this mean that while I can get an amp with THX select, but that does me no good unless I have THX-certified speakers? That my room accoustics have been modified in order to meet THX standards? I don't have a lot of room to tweak in my HT, and when I upgrade to uncompressed hi-def sound, I would like to know whether I should bother (with THX I mean)....? Edit: This is what I get for not looking at the forum I'm in when posting.... mods, please feel free to move this to where it belongs (speakers or amps). Thanx!