I bought one because I'm a big believer in reducing EMI effects and tried it on various components with no apparent benefits. I was about to write it off as snake oil until I rechecked where the transformer was located in my 1990s Krell preamp. I found a Youtube video that showed a much different location than I had thought. When I then moved the Stone to be on top of the transformer, I believe it helped with both dynamics and detail. I'll probably buy another soon and experiment with placing it on my phono preamp transformer. I'm very skeptical that it would actually benefit all components, but transformers notoriously emanate EMI so I think amps are the best use for them.
Shakti Stone
Does anyone have any experience with this?They claim it is noise reduction accessory.Seems like a low cost tweak for only $175.00.