I have a free performance upgrade advice for you. Plug it straight into the wall like I have my 7500 and my SVS pb13 Ultra. This advice was given to me from a proprietor of two high end audio shops who sells MacIntosh, Boulder, Rel, Vienna Acoustics and more. Do not limit dynamics on a high powered amp with surge protectors and power bars. The only item that you can plug the 7500 into with sound improvement and no dynamic power compression is a Shunyata Research Cyclops. That will cost 2K.