Thanks for that @dpop , I decided to do 3 dedicated circuits about 25 years ago. I didn’t know then and still don’t know a whole lot about this stuff, but I used to work with a bunch of shade tree carpenters & electricians & I bought a book about basic home wiring. I put the outlets in and ran the 12-2 runs of Romex, and then I paid someone to install an upgraded box and connect my new circuits.
However, my stupid question is: in the course of living in our house, I found the need to relocate outlets. Twice, actually. I asked around (including the electrician people at Lowes) and I was told that it was legitimate to use a work box to create a junction in the dedicated circuit. So the two questions are:
1) was this actually a legitimate thing to do?
and
2) the three circuits are still dedicated in that there is nothing on them but my audio components, but did the work boxes in between them and the outlets degrade them and does it affect them that each as two other outlets that are not being used? Does that last question even make sense as written?