Placed on the power supply within the component, there was greater resolution, bass and better tonality. Placed beneath the power supply, outisde of the component, it provides greater musical flow (for want of a better word), bass definition and tonality. Right now, I have it beneath the power supply since the musical flow does it for me.
Bottom line: Try these out with components. You can get the general idea in 30 minutes and settle in time is a few days only, not weeks. That said, I don't have one over my breakers. Three shakti stones reside there. Perhaps the synergy is even better with CBFs on the breakers too.
Tweaker's heaven.