PS 300, dedicated lines and a seperate ground is where to start, in my experience, before you spend $$$ on exotic power cords. Unles you have perfect power to begin with the differences are not subtle, especially in the digital chain.
What AC Power Cord sounds best?
I'm looking to upgrade my power cords. I currently have 4 Synergistic Research AC Master Couplers in my system. They sound great but I understand there are some others out there with a quiter background, better bass, increase resolution, etc. Please let me know of your experiences with the 'really good stuff'. Thanks!