dark_jedi: Ah, ok, so it might be the encoding process itself. Hmm, maybe it's something to do with the program that handles the encoding, maybe it results in a more natural sounding soundtrack once it's encoded to DTS HD. Sort of less strained sounding, or something like that, which makes it sound less loud, less harsh on the ears. That would make sense.

Well, that's great news, anything that can deliver the soundtrack with the highest fidelity, with a nice clean natural sound, is a good thing. :)