I have 2 dedicated 20 amp circuits for my system. One for the amp and pre which are plugged into a Shunyata Hydra 2 and one for my source components which are plugged into a Shunyata Hydra 4. I have an old house with older wiring, so when I had my service changed to 200 amps, it made sense to do this. I use a Shunyata cryo treated outlet on each circuit. I can turn my tube preamp all the way up on any source (with no music playing) and there is total silence.
Dedicated circuit
Wonder how many folks put in a dedicated line for their hifi. I added a 20 amp home run years ago, cost under $200 and the results were incredible. I swore off high priced power cords after that.