I guess old threads never die! I still have my Monster power conditioner from 2003. I don't notice any audio improvement and didn't expect it to. I bought it to make connecting everything on my audio rack easier to connect to the power conditioner since I had only one outlet on that wall. Also the cool factor that it looks like another component on my rack and can see the voltage.

Axiom M60s, VP150, QS8s, EP500 -- Rotel 1075 & 1068 -- Panasonic BDT500 -- Panasonic 60S60