I have a Custom Power Cord on a Rowland Concentra II and an Essence Power Cord on on my Resolution Audio cd player. Surprisingly, I found the amp benefits more. The ac cord, combined with cones from Mapleshade (my latest addition), have turned what I already knew was a great amp, into %100 pure bliss (at least for now). More dynamics, better imaging, control and tighter bass. I made these changes with an open mind, not expecting the level of improvement that I got.
