ALISA 1377 VINTAGE USSR SOVIET ANALOG SYNTHESIZER SN 1247

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"The synthesizer has 1 OSC with 4 wave forms, ADSR , filter, various modulations, vibrato and portamento effects.

OSCILLATOR: tune; octave +1/+2; portamento; wave forms: triangle, saw, square, odd harmonics; frequency modulation (for all 4 waveforms); impulse-width modulation (for square wave form) with impulse width and depth controls; harmonics (for odd harmonics wave form). You can use individual OSC waveforms (triangle, saw, square, odd harmonics) or mix them together to get unique sounds!

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."