Shakti Stone

Used one on the amp and one on the sacd player....sold them 3 months later. 

@dmac67 - confirmation bias. Yup. Since you are aware, check an out of print, but easy to find  book called "The Biomedical Bestiary'. Published in the mid-80s, chapters are still used in epidemiology classes today. It explains - in a biomedical context - a lot of this hobby, as well as many misunderstandings in medical research. 'Measurable But Not Meaningful' is another favorite chapter.

There's a lot of magical devices out there.  Most of them magically put money from one party to another. 

"questionable claim" is too kind.

Things like this only work if they're expensive as the magic of "expectation bias" is what is happening...enjoy it...revel in it...