Dedicated power lines for audio?

Go to electrical supply store and get 12ga romex and as many hospital grade outlets as you need. 20amp breaker and your done. hospital grade outlets hae a green dot on them. Don't accept anthing but the green dot. Don't be fooled by these audiophile outlets. theres no substitute for the green dot. Expect to pay 20-25 for each.( 8ga wire is a ridiculus overkill)

remember too to observe phase when placing your new breakers in the panel. Always keep breakers on the same phase. For example mount all your dedicated lines on the same side of the box. Craig I feel sorry for the guy that had to work with your 6ga romex.