These things have been around for quite a while I believe, and still not
even a hint of what principle of physics is supposed to be involved. The statements about them are just meaningless generalizations.
Brilliant Pebbles, a new tweak, cheaper than high end cables.
"Brilliant Pebbles is a unique and comprehensive system for tuning the room and audio system based on special physical properties of highly symmetrical crystal structures.
Brilliant Pebbles addresses specific resonance control and RFI/EMI absorption problems associated with audio electronics No snake oil here.