I didn't mean to be mysterious. I bought them because a dealer that I had a relationship with at the time in Princeton NJ recommended them; and while he was a bit quirky, he had a genuine talent for putting together really good sounding systems, so I bought them. He said that I should place them on, or in the closest proximity of transformers, and that it would have a beneficial sonic effect. I can't swear that it does, but I have always used them that way, and I also use one in the middle of my DAC which is not evenly balanced.