the yammi is set for auto detect, but i did notice this was the first time "EX" lit up on it's display while playing this disc. usually we have no problems with the vp100. even in 6 channel while watching tv, it's ok. the other night, the kids did watched nemo at a lower volume, and the dialog was better balanced (for lack of another term). maybe the vp100 couldn't play as loud as the 60's and 8's?