Hello bdp. We did a renovation of an already finished basement that allowed installation of dedicated 20 amp lines for a music listening area. I suspect what we did is sort of a basic/minimum. Were we building anew "from the studs", as it were, there are a couple of additional things we’d have done. Basically all we did was run 3 separate lines w/standard Romex cable from an existing sub panel. I had 3 duplex Cabledyne (cyro’d Hubbell) outlets installed at the end of each run. That doesn't represent a personal position on the merits of cryo treatment, simply that the Cabledyne outlets were well reviewed and affordable and cryo’ing is what Cabledyne does to them.
Ideally, I’d have liked to install a separate panel connected directly to the line from the street and supporting only the 3 new lines. Separate grounding for it as necessary. Not in the budget. Our sub panel does have a few other circuits on it but, fortunately, not the main house power draws. My thought is if you contact a local A/V store (or audio store) you can get a recommendation for an electrician they’ve used to do installations. Pretty sure it is not rocket science and a competent, licensed electrician will be able to give you good advice.
Good luck.
Ideally, I’d have liked to install a separate panel connected directly to the line from the street and supporting only the 3 new lines. Separate grounding for it as necessary. Not in the budget. Our sub panel does have a few other circuits on it but, fortunately, not the main house power draws. My thought is if you contact a local A/V store (or audio store) you can get a recommendation for an electrician they’ve used to do installations. Pretty sure it is not rocket science and a competent, licensed electrician will be able to give you good advice.
Good luck.