Some of the features mentionned are a load of ****. "SRS WOW HD" is one of these "recover lost information" gimmick. "SRS 3D Center Control" is a equalizer trick. It could still be good and they only add those teenager traps because their competitors do. But, then again, they could just dismiss the others' claim.
I remember a "The myths of soundcards" article that explained how some of these things are achieved (often just boosting some more sensitive frequencies so we can "hear" the improvement). If I ever find it (i.e. try to find it
), I'll post it here.
A patent is mentionned. May be worth a look as they are public and easily accessible through the Internet.