Audyssey can help tame room issues. But, it can only be used with PCM, not DSD. There are those who feel a DSD conversion to PCM lowers sound quality, although I suspect they'd be hard pressed to tell the difference in a blind test. Besides, lots of SACDs come from original PCM masters and many processors do a PCM conversion in the background. At any rate, if you find that Audyssey helps in your room, on your equipment, then you'll probably get better sound than with straight DSD.