We’re sitting in the same boat, brother… (*)
I snag you design as I also need clocks for various modules in my synth-to-be. There’s no voltage control, but you definitely solved another of my problems.
(*) DIY/HiFi-meeting in Gothenburg yesterday. Hade prepared a 2.1-system with cast concrete left/right speakers and a big sub. Planned to use a Chinese 2.1 amplifier, but when testing it the evening before I found out that the Chinese possibly had solder the amp using no solder …