Blue Circle BC86 MK III power line pillow

I have been using two of these in my system for about a year now and I just can not seem to take them out. At first I had them both in my home theatre room and honestly I did not notice that much difference when playing movies. After about three or four months I took them out to put in my main stereo listening room and wow!!! All of a sudden my home theatre setup sounded terrible. I guess they did a lot more than I initally thought. In my main room I noticed the difference right away, but it is a much more sophisticated sound system and it is sensitive to changes anywhere in the line. Now I like to move them to the home theatre setup when I do any serious watching and put them back to my main stereo room for my daily listening pleasure. Anybody have any comments?