Im just wondering what listening mode to use on my Onkyo 607 when watching Blu rays. Im sending a PCM signal to the receiver from my PS3. Both give me 5.1 audio but Multichannel is louder and has more bass. There is nothing in the manual on Multichannel mode but it says Direct mode has minimal processing. Would that mean Direct mode would be playing the audio how it is on the disc and therefore be better to use? Why would I want to use Multichannel over Direct if it is altering the sound in ways I don't know?