My set up which I have 4 individual wires from the Main Fuse Box.
1) 1 wire split into 2 outlets for mono block
2) 1 wire going into 1 outlet which leads to the PS8 for 2 channel sources and preamp
3) 1 wire going into 1 outlet which serves as AV
I have 2 independence cables which are 20A and 30A. Each cable connected with 2 sockets. My thought is:
20A sockets for mono Amp and one 30A socket for power conditioner for Preamp, CDP, Bluray, etc. The remain 30A socket is quite flexible but now for a subwoofer.