OK, I'm interested in PS Audio's claims about the sonic improvements of their Power Plants. They claim not only cleaner sound and better imaging which I guess is reasonable, but also more "slam" and power in the bass. Can anybody attest to a clear improvement in power, especially when using a receiver as I will be doing? How can the PS Audio put out more/faster power than the wall plug? Also, if using one of these, is there then any benefit to improving the quality of the electrical circuit it is plugged into? Thanks for any feedback.