Yes, I have Signal Cable. Works fine. I can't tell how big an improvement it made as I purchased it for my Stadium 11 which didn't come with a cable. My Stadium 111 which I bought later came with a standard cable but I never had a listening panel to compare them. Trying to change the cable while running back and forth trying to listen did not seem likely to tell you much. I eventually replaced the stock cable on the 3 with one made by an individual that advertises on Audiogon. Happy with that one also. As I run both at once any comparisons involve rebalancing my system so I haven't done it but my impression is that either is a definite step up from the standard cable.
