I have been restling with this upgrade for awhile. My curiosity finally got the best of me. I bought two MIT-z cables and 1 MIT z-II cable. Have not heard a big difference. I just ordered 4 more MIT-II cables to upgrade every cord in both H/T and Stereo system. Should be getting them soon. Then I will know if this up-grade is for real. I will post if I here a noticable difference.