There are no good links. The info is all either electricians who know nothing about audio, or audiophiles who never ran a line so don't really know. I've run several versions to my room, so I know. The biggest benefit is simply to run a direct line. This eliminates the usual multiple connections along the way. It is well worth the money, as is going up to 20 amps or 10 awg.
Use a good quality audio outlet. Synergistic, Furutech, QSA, I don't care just don't waste your time with the "hospital grade" crap. Nothing you will find in any hardware store is any good, period.
Anything beyond this yes it will be even better but the cost is a lot for how much better it gets. That is why, unless you are doing some no-holds barred type thing, my advice is one 20A line and call it good. Save to spend where it will make more difference. Like with a power conditioner, power cords, etc.
Use a good quality audio outlet. Synergistic, Furutech, QSA, I don't care just don't waste your time with the "hospital grade" crap. Nothing you will find in any hardware store is any good, period.
Anything beyond this yes it will be even better but the cost is a lot for how much better it gets. That is why, unless you are doing some no-holds barred type thing, my advice is one 20A line and call it good. Save to spend where it will make more difference. Like with a power conditioner, power cords, etc.