I own a pair. My thoughts basically mirror what Hdm had to say. At first I was quite impressed with the difference they made, but after awhile the sound of my system seemed disjointed, or more correctly disconnected, less of a whole so to speak. In fact the person who sold them to me described their effect in exactly the same way as Hdm does. Maybe they are one and the same person, I don't know. My speakers are bi-wireable and supposedely you really should have two pairs for use with bi-wireable speakers, plus another set for your power amp. Then there are ones from a competing company( Audio Prism) that are supposed to be much better,certaionly more expensive. That comapny also makes versions for your unused RCA inputs on your pre-amp, so now you can seee how what seems like a very rasonable investment initially can escalate very quickly. My pair is at a friends house right now. I loaned them to him to see what he thinks, as I value his opinion when it comes to all things audio. He reported not being able to hear any diffeence at all and he has a high resolution system. If you would like to try them out I can get them back anytime from him and send them your way for very little money. I live in Canada so the shipping will probably cost you more than I would ask for the grouind control devices themselves. Just a thought.
evs ground conrol tweak
I am interested in trying this tweak out. I would like to here from other members who have tried these as to what improvements they experienced. I have heard both good and bad about them, including someone saying that after a while with them in there system that they seemed to have a negitive effect on the sound of there system, any opinions are welcome, thanks, Kent