via this auction
"The synthesizer has 1 OSC with 4 wave forms, ADSR , filter, various modulations, vibrato and portamento effects.
LFO: on/off modulation switch, two waveforms (triangle, square), modulation rate, modulation rate coarse switch - 1Hz/10Hz.
FILTER: cutoff, resonance, vibrato (filter modulation), ADSR, switch between filter control- keyboard or contour OSC (ADSR). The synths filter due to it`s original architecture can be used as additional oscillator when filter`s resonance knob in self-oscillaltion position and it sounds really weird and interesting!
AMPLIFIER: ADSR, main volume, on/off synthesizer."