Monster Serge System

"The panel on the upper left consists of a bank of 36 custom comb filters and 24 custom VCAs, the 2 panels below it populated with 16 Keyboard Envelope Generators to drive them all. This instrument was made 1977 (as you can tell from the paper faceplates) and is in remarkable condition. Outside of the one mondule shown which is covered with blue tape, everything works perfectly."

via Peter Grenader