Module is available as a DIY project only.
This Module is currently available.
This is a 4-pole diode-ladder low pass filter. Useful for big classic analog filter sweeps. One audio and two cv inputs.
http://bartonmusicalcircuits.com/diodelpf/index.html
These merchants probably sell this module. Huh?
Included in 22 Racks, 11 are public: