Note: the Original manual can be found below the text and pictures.
(Quite rare) Analogue monosynth from the late 1970s. This was the bass sound of Soft Cell, and Dave Ball even had it on stage with him for the recent TV appearances promoting the final ever Soft Cell shows (see the YouTube link). Another famous user was Kate Pierson of The B-52s.
Although clearly designed for bass sounds, it make a very good lead synth. There also was a MIDI retrofit available building a custom trigger conditioning board and the MIDI socket was fitted to the perfectly sized cut out on the top of the panel meaning no holes needed drilling in the case.