flickr by thumbuki."Low-pass filter constructed from an old GBA-SP box."
Note the cables going into the box.
EVERYTHING SYNTH
flickr by thumbuki.
Title link takes you to a good post on Thumbuki that covers a brief history on the history of the vocoder and instructions on how to program one in csound. There are

Title link takes you to some news on MFB and Spectral Audio on SchneidersBuero.
"DM2 to MIDI is an application for Windows that allows you to use the DM2 (Digital Music Mixer) by mixman as a regular MIDI controller. This enables you to use your DM2 to control any MIDI supporting application such as Cubase VST, Traktor DJ Studio or visualJockey just to name a few."