millercarbon
The effects of dirty AC, and the benefits of cleaning it up, are actually incredibly easy and free for anyone to demonstrate to themselves. I ... proved it by double-blind testing ... simple test: flip off all the breakers. This electrically disconnects all the wire in all those circuits leaving only the system powered ... this is almost tailor made for double-blind testing. I had a friend over, asked his wife what is your favorite track? Would it be okay if I played it twice? In between I walked out to the garage and flipped the breakers. When I came back before I could even ask she jumped up and said what did you do it sounded SO MUCH BETTER!That is not a double-blind test.
Now someone paying attention may wonder, what really happened? Was it RFI? Or EMF?It's impossible to say. The test wasn't valid.