I'm a brand new convert to the camp of power conditioning enthusiasts. In my previous home, the power must've been very good because I never heard any difference at all when adding power conditioning to the mix. However, my new home is pathetic in terms of power quality. I just purchased a Monster AVS 2000 and wow, what a difference! It's been connected for just a few days and the constant flow of stable power seems to be improving things every time I listen. Such things are very dependent upon the state of the individual listening environment but this appears to be just the ticket for my system.