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.
Then the rest of the SMDs
resistors, headers, caps, etc
On the PCB, the cathode is marked "k"
Jacks & Pots. All B100K