Hi guys, Just hoping to get an answer to this question if possible. I have a Dennon AVC-A1HDa amp and Dennon DVD3800BD blu-ray player, my previous amp had no HDMI capability, so this is my first amp to play the complete HD soundtracks. Recently I watched the blu-ray of The Descent, I watched the HD track, which said it was 6.1 PCM but on the amps display it said 7.1. Could someone tell me the reason it would run a 6.1 track in 7.1? could it be because its running 2 rear surrounds instead of 1 speaker for DD/EX DTS/ES use, and so its counting the other rear surround as a differant channel? I would have thought that if that was the case, it should have just put the same signal through both rear surrounds and counted it as 6.1? thanks for any help.