Well now, I know this debate often creates some heightened emotion, but I've had an epiphone (I think I've been watching too many of my daughter's dvds!) Anyway, I've got a Yamaha RXV2400RDS receiver. There's a compression setting in the menus, as with most a/v amps, where you can change the Dolby Digital and dts output from Standard to either Minimal or Maximum. This has quite a profound effect on overall sound output... setting it to Minimum reduces output from the subwoofer, especially, so that explosions are more "held back" - Standard is the default setting, but choosing Maximum has an interesting effect... Dolby Digital sounds much more dts-like, while I doon't really notice much difference with dts tracks! There is still a difference between the two formats, but it's even less than usual... So, if I've just expressed my ignorance and you guys and gals always set your amps up this way... please excuse my silliness However, I would be interested to know what people think if they haven't got their amps set to the least compressed setting... especially those that have a preference for dts - perhaps you could change your settings and let us know if Dolby Digital sounds "better"?