Gorecki, that is what I thought was the case. The real conditioners in the video truck weigh at least 30 pounds, not the 50 I said exactly. The older Furmans that he uses in the truck he calls protector/filters. Back to my issue with the need for one, protection is very nice and could save some real money in the case of a real bad voltage spike. You can get protection from a good power strip. Filtering looks to be the next issue but I thought the built-in power supplies of most rack stuff was regulated and filtered to a large extent. Then there is the ground-lift function that I thought was rather bogus but there are pieces of equipment that really quiet down with the ground lifted. You could do the same thing by cutting the ground prong off the plug but that seems to be a desperate solution. In a thread I found doing the search someone said ground-lift does not disconnect the ground. It couples it through a capacitor. At that point, I am lost because I do not understand coupling. They get so much money for those Furmans that there must be more to them than I understand. Got this one borrowed for a week or two and will try to justify buying one. By the way, my pedal noise was a real newbie stunt. Dirty jacks and plugs. 25 caliber brass cleaning brush and some Safety-Kleen and my pedal board is behaving well. No humm rocks!