Dana, If he is running a 10-3 or 12-3 he is technically only running one circuit right? [Linked Image]

Seriously, I do agree with Dana on this. You should not run multi-wire circuits for audio equipment. You should run two 10-2 or 12-2 cables. All current design 15 and 20 amp breakers will accept #10 wire. I hope your planning on getting an electrician to help you with this project. Installing new circuits is not a DIY project.

Curt

Curt Swartz