[quote=terzaghi]What exactly does the audysssey dynamic EQ do? [/quote

Somone correct me if I'm wrong, but IIRC it's supposed to bring out the dynamics of a soundtrack more effectively when listening at low to moderate levels. I don't know if they simply boost the bottom and top ends or what, but I've been messing with it and, for me, I like it much better ON. Apparently it turns itself off once a high enough volume is reached.