Someone posted that for his home studio the idea of a breaker box in the studio seemed like overkill. For most home studio users, one or two dedicated 20 amp circuits should be fine. “Dedicated” means a home run, only the audio studio has use of that circuit. If you install just one dedicated duplex or quad outlet, preferably with isolated ground outlets — and everything in the room terminates at that outlet, then I think you’ve met the minimum requirements to establish minimum loop area.
