“Mikrophonie is a microphone preamp with a piezo contact mic built into the panel. It is an easy way to bring environmental noise and feedback into a modular system, inspired by the early days of electroacoustic music in Paris and Cologne, and by the contact microphone and phonograph cartridge experiments of John Cage, Gordon Mumma, Robert Ashley and Nicholas Collins.”
I received this kit as a gift…and never assembled it! It’s a cool module, I just never got around to it. More details here:
https://musicthing.co.uk/pages/mikrophonie.html