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MBS-100 is a monophonic bass synthesizer inspired by synthesizers produced in the soviet era times while having the flexibility, MIDI control and compact package of the 21st century.

It has 19 knobs, 3 switches and 4 buttons with which you can control the parameters of the sound and MIDI.


  • Hybrid analog-digital synthesis;

  • Voltage-controlled digital oscillators (VCDO) — two, each with four waveforms: saw, square, pulse 1 (25% rate), pulse 2 (10% rate).
    Note: Pulse 1 and 2 are equivalent to PMW but have fixed positioning similar to the likes of «Aelita», «Polivoks» synthesizers for e.g.
    Octave ranges — 3 octaves for OSC1 and 5 octaves for OSC2;

  • Voltage Controlled Filter (VCF) — one fully analog 12 db/oct low pass filter with cutoff and resonance parameters;

  • Envelope Generators (ADSR) – two;

  • Voltage Controlled Amplifier (VCA) – one, fully analog distortion effect selection switch;

  • Low frequency oscillator (LFO) — one with two waveform options (square and triangle) to control the VCF.

  • MIDI interface — MIDI In, MIDI Thru (16 channels + Omni);

  • Audio output — one mix output (mono 6.3 mm jack);

  • Controls — 19 knobs, 3 switches, 4 buttons and 11 LED indicators;

  • Case: durable steel case with wooden cheeks;

  • Weight: 1 kg;

  • Dimensions: L30 x W16 x H8 (cm);

  • External power supply – 220v adapter 9 VAC (included).



Only x30 units were ever produced.

More units can be produced if there will be enough requests.

MBS-100 is being controlled by Korg SQ-1 step sequencer. No EQ nor fx are applied. In the second part, can hear MBS-100 multitracked in DAW via MIDI, no EQ has been applied only occasional reverb and delay. Drums are sequenced externally.

Perfect Circuit Audio jam with MBS-100 controlled by Elektron Digitakt

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