This is a modern day recreation of the very necessary minimoog octave buffer board. Born out necessity, without the buffer board your mini is likely going out of tune every time you switch octaves. Moog released the buffer board as a field fix and installed them in all future productions.
If you don’t have one in your mini, you’re probably out of luck to find a vintage board. Our board not only achieves the same function, but also is more intuitive, utilizing a quad op amp instead of 3 single op amps, and includes silk screening to intuitively show you where the wires need to be connected. We have made a video on installing it in vintage moogs and the mounting bracket will fit the vintage style footprint if you need to replace a damaged buffer board.