Uploaded March 2026 | Updated September 2026, 11 hours ago
#rmif #opus #synthesizer
The RMIF Opus (РМИФ Oпус) is a rare analogue string machine/synthesizer made in Riga, Latvia by the Riga Musical Instrument Factory (RMIF) in the year 1988.
The sound range is five octaves and the instrument consists of 4 sections — piano, that synthesizes piano like lead soundings of different timbres, analog string machine, that plays wonderful string sounds with soft attack and with the possibility to control release, tremolo and the pereodically repeated beat-fading sounds.
A flexible bass section, that is controlled by 2 lower octaves, that contain three 8' and two 16' registers.
The Opus is based on divide-down technology with a master oscillator and has very nice multimode filter (LPF, BPF and HPF with resonance), a fantastic chorus, ring modulator, vibrato and a lot other features.
#rmif #opus #synthesizer
The RMIF Opus (РМИФ Oпус) is a rare analogue string machine/synthesizer made in Riga, Latvia by the Riga Musical Instrument Factory (RMIF) in the year 1988.
The sound range is five octaves and the instrument consists of 4 sections — piano, that synthesizes piano like lead soundings of different timbres, analog string machine, that plays wonderful string sounds with soft attack and with the possibility to control release, tremolo and the pereodically repeated beat-fading sounds.
A flexible bass section, that is controlled by 2 lower octaves, that contain three 8' and two 16' registers.
The Opus is based on divide-down technology with a master oscillator and has very nice multimode filter (LPF, BPF and HPF with resonance), a fantastic chorus, ring modulator, vibrato and a lot other features.








![Aelita Synthesizer (1980s) - Toxic Magma
#aelita #synthesizer #demo #sounds
Sometimes referred to as the Murom Aelita, the Aelita is a monophonic analog synthesizer manufactured in the Soviet Union in the 1980s.
Although its design seems inspired from American and Japanese synthesizers of the previous decade, with a dark aluminum body[3] and near vertical control panel, the Aelitas looks are distinctive in the details.
They feature large colored plastic sliders instead of the more common rotary dials, and round or rounded push-buttons instead of flip or rotary switches. The vertical sliders are oriented so that their maximum labelled value is at the bottom, instead of the top as is more common. A sole red LED lights up when the instrument is on.
Its hinge-mounted upper control panel can be shut like a piano keyboards lid, thus protecting the buttons and sliders and preventing accidental settings changes during transportation, and changing the general shape of the instrument to one that is not playable but more transportable.
The keyboard is 3.5 octaves wide and made of 44 unweighted, full-sized plastic keys ranging from F to C.
All controls are labelled in Russian, using Cyrillic script.
The Aelita has 3 oscillators, each with 3 fixed waveshapes (Saw, Pulse and Square), plus a 4th oscillator only active in unison mode, amplitude cross-modulation, a low-pass filter with resonance, one LFO and two envelope generators, all arranged in a fixed architecture typical of subtractive synthesis. It has a maximum range of 7.5 octaves.
It is monophonic, meaning that it can play only one note at a time (although detuning of each oscillator makes it possible to play fixed intervals or chords instead of notes)
It has two special modes: the unison mode creates an unison-like effect on each oscillator (reducing the range as a tradeoff), and the strings mode creates a vibrato-like effect independent of the LFO.
Although of a sturdier construction, it lacks several features commonly found on American and Japanese brand synthesizers at the time, such as: velocity response, portamento, pitch and modulation wheels or levers, settings memory, and (from late 1982 on) MIDI implementation.
Its output is monaural.
Sonic character
Its sonic qualities have been consistently qualified as fat. Other reviewers also call them impressive,and sometimes aggressive.There is audible background noise at the output, resembling oscillator bleed. Aelita Synthesizer (1980s) - Toxic Magma](https://i.ytimg.com/vi/XgsxzSYDUxk/mqdefault.jpg)

