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This vintage Micromoog is fully functional and in good condition with some wear to the end cheeks. This unit has been recently serviced by Switched On and sounds excellent!
The Moog model 2090 Micromoog is a monophonic analog synthesizer produced by Moog Music from 1975–79.
During 1973 & 74, Moog attempted to produce a synth system, possibly as a result of seeing Yamaha's massive GX-1. The bass and polyphonic components of the "Constellation" became the Taurus and PolyMoog, and while the Lyra monophonic lead synth never went into production, the smaller MicroMoog emerged, using some of the ideas and technology.
The monophonic Micromoog was designed by Moog Engineer Jim Scott in consultation with Tom Rhea, with electronic refinement input from David Luce, Robert Moog, as a scaled-down, cheaper alternative ($650-$800 market price) to the Minimoog. It was designed to tap into a market of musicians who wanted an introduction to synthesis, but who could not afford the $1,500 Minimoog. However, while the basic architecture was a simple VCO/VCF/VCA, inexpensive enhancements made it a more creative synth. Its single voltage-controlled oscillator has variable waveshape which can also be modulated and a sub-octave can be added one or two octaves below. Its -24 dB per octave low-pass filter has its own envelope generator, and can be frequency modulated by the VCO. The voltage-controlled amplifier has its own envelope generator. A noise generator, sample and hold, low-frequency oscillator, and modulation routing complete the voicing. Moog chose to use two A(S)R envelope generators (with switchable sustain) instead of the single ADSR more commonly found on budget synths. Other switches like VCA bypass, VCF tone mode and release on/off allow quick changes to be made live.
It has a 32-note keyboard with a built-in ribbon controller instead of the more common pitch bend wheel, although a retrofit pitch bend wheel was available.