Originally Posted by mrtwstr
To re-ask my stupid question before... how is this different than the SMS-1?
Just on the surface, all other electronic correction - EQ's - only make changes in the frequency domain. Audyssey not only makes adjustments in the frequency domain, but in the time domain as well. "Traditional" EQ can only be set for one listening position. OK, it's a bit more complex than that, but involves one's seats to be placed precisely based on room dimensions. I'd don't know about you, but my seats are where they need to be for a lot of reasons and none of them are 5ths and 7ths of all three
Audyssey is able to "consider" many positions - MultEQ XT in some newer pre/pros and AVRs measures at eight positions - and make adjustments that improve ALL of the seating positions. IOW, it enlarges the sweet spot to more than one seat.
If all present EQ is checkers, then Audyssey is chess . . . 3D chess