ALISA 1387 - Vintage Soviet Analog 2OSC Synth

via this auction

"rare soviet analog monophonic melodic synthesizer - ALISA 1387. It was produced by the Luberetsky EMI factory in 1989. It has a 3-octave keyboard, a modulation wheel, control knobs and regulators. The process of synthesis is performed with the 2 OSCs, 1 sub oscillator, noise generator, a filter with ADSR, 1 LFO, and wide range of modulation functions. The synthesizer plays a stable keyboard pitch thanks to quartz stabilization of oscillators.

ALISA 1387 consists of 7 main sections - OSCILLATORS (called TONE GENERATORS), MIXER, FILTER with ADSR (called FILTER CONTOUR), AMPLIFIER ADSR (SIGNAL CONTOUR), and OUTPUT section.

OSCILLATORS section has three subgroups - OSC 1-2 (called GENERATOR 1 and 2), and REGISTER.

Their parameters are the following:
- osc1: waveshape switch (pulse, saw, and square - can run simultaneously!), pulse width modulation (wave forms 1 and 2) levels;
- osc2: waveshape (saw/square), sync interval, sync on/off;
- register: 8'', 16'', 32'' and sub-harmonic; next - portamento on/off, level and global tuning.

MIXER section - osc's 1-2 levels, noise generator level.
FILTER - cutoff, resonance, filter vibrato, key follow.

FILTER CONTOUR - attack, decay, sustain release (called amplitude) also switched on/off.
SIGNAL CONTOUR - attack, decay, sustain (only on/off), release.

OUTPUT - main volume level, power on/off.

MODULATION section(left from keyboard) - mod depth wheel, mod purpose - osc/filter, waveform switch - saw/square, rate (called tempo).

On the rear panel, the CONNECTION plugs are located:
- Line Out
- Power source - 220V/50Hz, cord plug, fuse; For use with 110/127V, a voltage converter is necessary\ not added.
- External run CV gate - OSC control plug, Input and Output plugs, on/off switch;
- Phones Out (located below Modulation section)"