I ran a dedicated 20 amp circuit. Leviton 8300-R 20-Amp hospital grade outlet. ZeroSurge 8R20W power conditioner. Preffair Audiophile HiFi shielded power cord, 10AWG, rhodium plated. Made no difference whatsoever. Skin effect, jitter, and drift do not make an audible difference. Circuits that handle audio are all powered by DC, so the correctness of the AC sine wave makes little difference unless it is massively out of whack.
New Electrical Circuit
I have an older house with open circuits so I am wiring a new dedicated circuit for my audio gear. Before I do so, would it be very advantageous to bump up the quality of the outlet and / or wiring to improve quality or is this overkill? Has anyone done this in the past and what would you recommend?