The PS Audio unit, as stated above, is a vastly superior solution to any other type of power conditioner. I will throw in another solution equally as expensive and even more demanding of space, but better than all of them put together: A motor-generator, aka a big electric motor hooked straight to a big electric generator, available from several industrial motor and phase converter manufacturers. They run in the multi-K range and need to be isolation-mounted somewhere far from your listening room (garage for example, or a separate shed), but will provide an absolutely perfect waveform with tremendous current capacity, and 100% total line-to-load isolation, meaning that ANYTHING coming down the line WILL NOT make it into your system. Plus they're very power-efficient, usually around 90%, rather than the 25% or so (just a guess) that the PS Audio will run. Just something to think about....