ESTRADIN-230

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"Altair-231. It was made in USSR at Zhitomir factory "Estradin" in 1983. A monophonic synthesizer Estradin - 230 (plant "Elektroizmeritel" of Zhitomir) contains 4 main sources of sound - 3 tone generators and the source of noise. Such external sources as electroguitar and electroorgan can be connected to the instrument. The filter of lower frequencies is intended for changing harmonic compound of signals of audible frequency in self-excitation condition. This filter can be used as fifth source of sound. There is a possibility to control attack, release and sustain. One use such an interesting effect as sliding transition from one sound to another. There is a memory device in the synthesizer that saves sounding of tone as soon release time. There are some other devices in the instrument such as glissando, modulation mixer and filter controlled from the keyboard. Frequency range is from 1 to 20000 Hz One can use an internal generator "A" for tuning (440 Hz)

ESTRADIN-230 3-VCO SOVIET ANALOG SYNTHESIZER

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"ESTRADIN-230 — FANTASTIC VERY RARE VINTAGE SOVIET ANALOG MONOPHONIC SYNTHESIZER. A REAL MONSTER SYNTH WITH ENGLISH KNOBS AND PANELS.

ESTRADIN-230 is a Soviet Minimoog equivalent.
If you are familiar with Soviet synths you might know that ESTRADIN-230 has absolutely identical schematics (all 6 PCBs) with ALTAIR-231.

ESTRADIN-230 is powerful monophonic 3-OSC synthesizer produced by Elektroizmeritel, millitary radio plant in Zhitomir, USSR, 1984. Synth has 4-octave 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-3 can work as the modulator), 1 VCF (lowpass 24dB/oct) with ADSR, 1 VCA, 3 LFO, noise generator (white/pink), glide, memory. It has an EXTERNAL INPUT allowing to use FILTER and GENERATORS with OTHER INSTRUMENTS such as guitars, synths, etc! ESTRADIN-230 consists of 5 main sections - OSC, MIXER, MODULATION, FILTER and AMP.

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 as MAIN OSC)

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
— global section: main volume, phones volume, phones, A-440Hz tone on/off, power.

Connections: input, output, pedal input, phones.
Power supply: 220V/50Hz, 127V; fuze 0,125A

— Dimensions (mm) 754x466x110 (29.6"x18.3"x4.3")
— Weight: 18 kg (39.68 pounds)"

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Korg MonoPoly / Oberheim Xpander / Altair 231 / Entropy & Sons Recursion Studio

video upload by HanzVolt

"A song I made with the vintage beasts. And some glamor shots of the gear with the Entropy & Sons Recursion Studio sprinkled in"

ESTRADIN 230 | ALTAIR 231 RARE VINTAGE SOVIET SYNTHESIZER PARTS

POWER PCB via this auction

OSC PCB via this auction

SUB-POWER PCB via this auction

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Altair 231.repair and midi upgrade

video by Alexey Taber

ALTAIR 231 Vintage 3VCO SYNTH

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SOLARIS Estradin 314

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"rare soviet analog polyphonic synthesizer - Estradin 314 SOLARIS. It was manufacture on the same "Estradin" military radio plant in Zhitomir city where was produced power moog-type synths Altair-231, Estradin-230 in eighties. SOLARIS uses organ style drawbars to create the basic tone, and has a analog filtering as well. Inside it has 12 voice boards that correspond to each key in an octave, and then uses a divide down system to get to the other octaves. Because of this the sound of the oscillators are really thick and meaty. The filter is really extreme and sounds fantastic, as well the envelope is really punchy, so you get great synth stabs, sweeps and percussive organy sounds. If you use the envelope and filter sections carefully you can get great moogy leads out of it, warm organ sounds, flying ambient textures, in the high resisters it can sound like a string machine, or even a theremin if you crank the resonance. It has tons of character and can sounds really unique!


Estradin 314 Solaris CONTROL PANEL:
-Pitch bend
FILTER section: Envelope amount, Cutoff, Resonance, Attack, Sustain, Release.
REGISTERS section: Harmonics 1-5 (8",4",2", 2 2/3", 1").
VIBRATO section: Lfo speed, Lfo pitch amount, Lfo filter amount.
-Amplifier release
-Brilliance ( Filter blend )
-Tune
-Power On/Off

CONNECTIONS: output 1/4 jack, pedal 5-din input, power plug, fuse.

The supply voltage - 220-230V/50Hz. For use with 110/127V, a voltage converter is necessary."

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Altair 231 1984' - Strange Sounds Of Soviet Union - Soviet Mini Moog

Gargula Tron

"undoubtedly one of the best synthesizers built in the soviet union, endless sound possibilities."

ALTAIR 231 VINTAGE SOVIET ANALOG SYNTHESIZER

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Panel translation below.

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ALTAIR 231 - 3VCO Soviet Analog Synthesizer with MIDI

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ESTRADIN EFFEKT-2 PHASER

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"Phaser-2 was made in 1980s at Estradin military radioplant in USSR where was manufactured well-known moog type synths - Altair 231, Estradin 230, Solaris 314 etc.
Estradin phaser has it`s own original sound and can produce very deep analog phaser effects that will be suitable for any kind of music.

Control panel parameters:
— Frequency, Balance and Brightness.
— Effect On/Off (Red) switch.
— LED is rate\freq synchronized.

The back panel:
— Input, Output, Direct Output on a standard 1/4 mono jack sockets.
— Switch between 2 bias modes."

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ALTAIR-231

Title link takes you to shots via this auction.
Details:
"Synthesizer is based on 3 VCO (any can work as the modulator), 1 VCF (lowpass 24dB/oct) with ADSR, 1 VCA, 3 LFO, noise generator (white/pink), portamento. Consist of 5 main sections - MODULATION, OSC'S, MIXER, FILTER and AMP (called Contour). "

SOLARIS 314 ESTRADIN

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"Offering for sale this vintage rare soviet analog polyphonic synthesizer - SOLARIS Estradin-314. Produced in the USSR on "Estradin" factory in Zhitomir city (famous for its Estradin-230 & Altair-231 synths) in 1988. SOLARIS uses organ style drawbars to create the basic tone, and has a analog filtering as well. Inside it has 12 voice boards that correspond to each key in an octave, and then uses a divide down system to get to the other octaves. The filter is really extreme and sounds fantastic, as well the envelope is really punchy, so you get great synth stabs, sweeps and percussive organy sounds. If you use the envelope and filter sections carefully you can get great moogy leads out of it, warm organ sounds, flying ambient textures, in the high resisters it can sound like a string machine, or even a theremin if you crank the resonance. It has tons of character and can sounds amazing! (check the Demo section)

Control Panel:
-Pitch bend
Filter section: Envelope amount, Cutoff, Resonance, Attack, Sustain, Release.
Registers section: Harmonics 1-5 ( 8", 4", 2", 2 2/3", 1" ).
Vibrato section: Lfo speed, Lfo pitch amount, Lfo filter amount.
-Amplifier release
-Brilliance (Filter blend)
-Tune
-Power On/Off

CONNECTIONS: output 1/4 jack, pedal 5-din input, power plug, fuse

The mains power of the unit is 220 volts. For 110/127v countries I`ll include voltage converter."

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ALTAIR-231

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Altair-231 Soviet Vintage Analog Synthesizer with 3 VCOs

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Details, pics and video updated here.

ALTAIR 231

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ESTRADIN EFFEKT-2 PHASER SN 1229

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"Phaser-2 was made in 1980s at Estradin military radioplant in USSR where was manufactured well-known moog type synths - Altair 231, Estradin 230, Solaris 314 etc.
Estradin phaser has it`s own original sound and can produce very deep analog phaser effects that will be suitable for any kind of music.

Control panel parameters:
— Frequency, Balance and Brightness.
— Effect On/Off (Red) switch.
— LED is rate\freq synchronized.

The back panel:
— Input, Output, Direct Output on a standard 1/4 mono jack sockets.
— Switch between 2 bias modes."

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PULSAR RARE VINTAGE ANALOG SOVIET USSR DRUM MACHINE SN 910036

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"The device of auto playing patterns Pulsar has the following parameters:
64 preset non-editable rhythms
slider knobs "Level" for adjusting volume level, "Coarse Tempo" and "Fine Tempo", "Accent"
key groups "Enter Rhythm" for select the preset rhythm
indicator "Rhythm Number" show the number of current style
"Imitation" has 8 pads for recalling 8 drum sounds (big drum, snare, hat, clap, 3 toms, crash)
"Start-Stop" knob with flash indicator is shown the step/beat
"Power" knob, power cord socket, fuse, ground connection
connections "Out" for line output, "RC" - for remote control pedal "Start-Stop", "Phone" - external headphones.

Zhitomir plant Electroizmeritel (Estradin-230 and Altair-231) 1991"

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ALTAIR-231

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ESTRADIN-230 3-VCO SOVIET ANALOG SYNTHESIZER

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"ESTRADIN-230 is a Soviet Minimoog equivalent.
If you are familiar with Soviet synths you might know that ESTRADIN-230 has absolutely identical schematics (all 6 PCBs) with ALTAIR-231.

ESTRADIN-230 is powerful monophonic 3-OSC synthesizer produced by Elektroizmeritel, millitary radio plant in Zhitomir, USSR, 1984. Synth has 4-octave 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-3 can work as the modulator), 1 VCF (lowpass 24dB/oct) with ADSR, 1 VCA, 3 LFO, noise generator (white/pink), glide, memory. It has an EXTERNAL INPUT allowing to use FILTER and GENERATORS with OTHER INSTRUMENTS such as guitars, synths, etc! ESTRADIN-230 consists of 5 main sections - OSC, MIXER, MODULATION, FILTER and AMP.

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 as MAIN OSC)

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
— global section: main volume, phones volume, phones, A-440Hz tone on/off, power.

Connections: input, output, pedal input, phones.
Power supply: 220V/50Hz, 127V; fuze 0,125A

— Dimensions (mm) 754x466x110 (29.6"x18.3"x4.3")
— Weight: 18 kg (39.68 pounds)

Some examples of how it really sounds you will find here:
http://ruskeys.net/eng/base/estrdn230.php#sn"