A few helpful hints.
Use the silver plated wire on the positive and neutral post, not on the ground. Use a quality 10 or 12awg pure Copper cable there. This will neutralize any excessive brightness coming from the two silver plated copper cables, and add more fullness and smoothness to the power strip.
Twist the two silver plated cables together, and counter spiral wrap (not to tight) the pure copper ground cable in the other direction. This helps with EMI and RFI interference.
Use your own Copper Sleeve tweak on the power strip. Put the copper sleeve at the base where the power cord or IEC goes into the unit. I have three DIY Power strips made this way in my system now.
Ivan_nosnibor very detailed post about all AC outlet's ringing is true. So when I made my power strips a couple of years ago I started trying different things to stop the ringing. I ended up with copper faceplates on all my outlets and I used Carbon Fiber peel and stick strips on the faceplates. Just a little on the sides and top. To much and the sound was choked. Removing a piece less than a 1/2 inch was the difference. You want to calm the vibrations and not take away from the music. It looks like a fun project, enjoy.