It's in Eurorack format.
Andrew has based the layout on a Buchla 194 filter.
This is a fixed 4 channel bandpass from the late 1960's.
He has however added some goodies: Some Fuzz circuits & four Korg 3200 VCAs.
The distorted signal can be mixed with the clean signal . The VCAs use vactrols and allow CV control of the mix.
Andrew's build notes are here:
There are some useful links in the NLC blog:
Some pics of the virgin PCB and faceplate first.
Flaming Creatures (1963), Chumlum (1964) and Scotch Tape (1963). He died on September 25, 1989 in Manhattan, New York, USA.