I'm not even sure what that is, i stopped trying to keep up with the hi-tech around 1990. By that time they came out with 5.1 CD's -why? Tibetian bells are cool, every once in awile i'll play some Buddist monks chanting if I meditate. I have to be in the mood, and need to have no-one around to distract me - I'm not a very good "meditator" LOL I prolly should be spending more time studying Buddism, and less time posting. Subwoofers?? Naw. Been to too many rock and roll shows where the bass is turned up too loud. I like it loud, but i stick to the audible hearing range