Had my Yamaha RX SL80 receiver for about a month or so now, really pleased with it. The amp I had before (Sony digital amp STR-KSL5) has now been moved to another room. On the Sony when you switched from DD & DTS (when the soundtrack allowed this) there was a definite increase in both volume & drive. Now when I do the same with the Yamaha there doesn't appear to be ANY difference whatsover, in fact DTS seems lower. I should add that switching to ES or EX on both soundtracks where available sounds but still the same difference. Any thoughts? eg: Blade 2 is the most obvious one I can think of, extremely loud in DD-EX but DTS-ES sounds a bit lower, particularly speech, but also the bass. Do I need to change anything, have I set something up wrong?