jerrybj Yes that is the HD-Plex LPS. It wasn’t cheap but provided outputs for all the different voltages that each of those boxes below it demanded. The supplied DC cables are a bit on the cheap-feeling side but met most of my needs as shipped. I did make a couple of splitter cables and learn to solder those XLR jacks, which wasn’t difficult/
I’m a lucky audiophile indeed. My wife is remarkably tolerant of my audio endeavors, which is one of her many virtues. Another is that she had the house wired for Cat 5a when she designed and built it, with outlets at every imaginable location. I recently discovered that the phone jacks, which are terminated in the wall next to each Cat 5, are actually wired with the same type of cable, and can thus be easily converted to Cat 5.
Most of this stuff used to be in a hallway under the stairs where the printers and cable modem and a big Cisco switch, a patch panel, the main mesh router, the alarm system control box, a phone controller and other potentially noisy gear has to live.
There’ve also been substantial-but-theoretically-reversible sound treatments in the listening room....