ESTRADIN-230 : a “Russian Minimoog”, Russian Minimoog equivalent. 1983 - c.85

ESTRADIN-230 is a monophonic 3-osc power synthesizer produced by Elektroizmeritel, millitary radio plant in Zhitomir, USSR, 1984. My machine was all time in not smoking studio in Riga. All original parts included, such as: black color, strong aluminum cover to protect synth keyboards/control panel and external pedal for volume control.
Synth has 4-oct keyboard (F-C) with velocity (sensitivity assign to vibrato effect). For live performance there is a wheel which provides pitch shift. ESTRADIN 230 is based on 3 VCO (osc. No.3 can work as the modulator), 1 VCF (lowpass 24dB/oct)with ADSR, 1 VCA, 3 LFO, noise generator (white/pink), portamento, memoryloop. It has an EXTERNAL INPUT allowing to use FILTER and GENERATORS with OTHER INSTRUMENTS such as guitars, other synths! ESTRADIN 230 consist of 5 main sections - OSC'S, MIXER, MODULATION, FILTER and AMP... Attention! only 2 osc. works (No.1 and 3).


OSCILLATORS section:
- osc 1,2,3 registers - 2", 4", 8", 16", 32", LF
- osc 1,2,3 waveshape select - triangle, saw, square, pulse, sine
- osc frequency
- freq 1..3, freq 2, freq 3
-linked to keyboard pitch on/off (osc 3 ONLY)

MIXER:
- osc 1,2,3 on/off, level
- ext input level, on/off
- noise generator level, on/off
- noise mode switch: white/pink MOD section:
- portamento on/off, rate;
- mod mixer knob: balance between modulated by OSC3 and noise, depth amount;
- pitch wheel (glissando)

FILTER:
- mod on/off
- cutoff, resonance, brightness
- attack, decay, sustain
- keytrack on/off

AMPLIFIER:
- attack, decay, sustain
- key hold memory on/off Next
- global section: main volume, phones volume, phones out (5din), A-440Hz tone on/off, power.

Connection (5 din): input, output, pedal input, phones.
Power supply: 220V/50Hz, fuze 0,125A

DIMENSIONS (MM) 754x466x110.
WEIGHT 18 KG

In this samples synth sounds with 2 osc. The sound is very fat!!! check examples below:

sound 1
sound 2
sound 3
sound 4
sound 5
sound 6
sound 7