Heres a quick look, via Synth Diy Guy, at building the LeafAudio Microphonic Soundbox, an electroacoustic instrument designed for sound exploration.
The Soundbox, created by LeafAudio’s Manuel Richter, features 2 internal contact microphones and 2 low noise pre-amps (~100x Gain). Both signals are mixed together and sent to the mono out as a line level.
Here’s an introduction to the Microphonic Soundbox from Richter:
Pricing and Availability
The Microphonic Soundbox is available via Exploding Shed, starting at 159,00 €.