I have the AVR-520. I have recently noticed as I'm sure many of you have that the bass is noticibily weaker on the DTS tracks. Well The Tech guy said this is because Dts records there LFE track 16 db lower than Dolby does. So I asked him, "So DTS has weaker bass." He then told me that what most people do is turn there speakers down to -6db and turn there subs up to +10db to compensate. Well the fact is cranking up the sub, does not adjust the LFE level, it just cranks up the sub! And while it will sound better it doesnt fix the problem. He told me that you cant turn up the setting on lfe track and that all company's recievers are the same. He says that these are just the chips DTS is sending out and there nothing to do about it. Well I know this is a bunch of BS because my $250 Kenwood sounded just fine on DTS. I swear between this and my remote braking, I also have this bug were my unit wont recognize a handful of dolby tracks and I have to manually set it. I think this is the last HK I"ll be buying. Its sad too cause besides the couple problems this reciever does have I really like it.