via
this auction
"Very rare beast from the late 1970s / early 1980s. Sold by Maplin electronics as a kit as well as pre built. Condition is superb for its age, only a few light marks here and there. Wooden case is like new! 2 Osc + LFO aand some very unusual features i have never found on other synths...
Each osc has its own controls and can be triggered from Keyboard & LFO MOD, MOD, Key, or switched off. 7 octave selection switch and low osc selection, free run osc, square wave shape, 5 x waveform selections. Osc output can then be routed to a choice of, No o/p,filter,envelope, direct to the output,VCA

External input with controls for triggerung envelopes from what i can see. LFO speed control, Sample/hold, Noise generator, glide, tune. Various VCA trigger modes, Filter section with frequency and resonance and also various trigger modes. Transient envelope, Envelope, 5 band graphic eq
Even has a built in spring reverb."