OK put the BB boxes on the trannies of my preamp. Improvement in sound. Open with better focus. On amps zero result, on Uberbuss IEC side an improvement. On power supply for CDP no improvement.
The biggest change was at the duplex outlet feeding the system. I have a quad outlet with two duplex outlets. it waseasy to rest the box across the two top plugs.
Quieter than before which I thought was impossible so more musical info available with added 3D imaging.
This may work in some areas but certainly not a one size fits all. If you are willing to experiment with all options IMO an improvement can be had.
In the end two boxes atop each other at the IEC end of the Uberbuss, one on each preamp power supply transformer, and one on each plug in system [ a bitch to do until I used Blu-tak ]
In a week or two i will remove them. that should be the ultimate test when they are gone. Keep ya posted.
charles