After mark power cords, Have made a big improvement in my set up. With power conditioner or without. I do not claim to understand the science of it or do i really want to. The end results is all that matters. When you sit down and listen is the sound better or just different. Some times its just different and some times its better. I have experience it on all equipment that i have change the power cord on. On my Amp or Disc player, Preamp, Power Regenerator . The best way to find the power cord you like and makes a difference is to try several different ones. But you must take time and listen. All my after market power cords are in to stay.
enjoy Pete