Steve, im just trialling a £200 Chord clearway mains enhancer, its already "burnt in" but after 24 hrs so far, i cant hear any improvement!i have a Russ Andrews yello power cable on my rotel cdp, cant detect any improvement there either. I want to, i really do, cos like a lot of people im looking for a little tweak to up the ante a bit.You can buy multiblocks, they tend to be expensive or start with your cdp, if you hear a difference, get one for the amps, etc. Btw, with the Chord ,it plugs into the wall socket, and you then run a multiblock from there, supposedly even a cheap one, as it SHOULD have done its clean up act before that.