MATRIXSYNTH: Korg Mono/Poly MP-4 Vintage Analog Synthesizer w/ Signed Gig Bag

Sunday, November 10, 2019

Korg Mono/Poly MP-4 Vintage Analog Synthesizer w/ Signed Gig Bag

via this auction

"1980's Korg Mono/Poly MP-4 synthesizer in excellent condition and in perfect working order. The Mono/Poly is a 44 key "mono-polyphonic" analog synthesizer manufactured by Korg from 1981 to 1984. This model is the sister synthesizer to the Korg Polysix, with four highly stable voltage-controlled oscillators (VCOs), a 4-pole, self-oscillating low pass filter (LPF), several modulation capabilities and pseudo-polyphony (paraphony) functionality.

The four VCO's can be shared in four-voice Polyphonic mode, or linked in Unison for a versatile monophonic lead. Each VCO has its own level, tune, and waveform type control. Waveforms include triangle, sawtooth, and variable pulse wave. It has a great VCF (filter) section as well as two envelope generators (one for the oscillators and one for the filter), and there are also two individual LFO's which can be used to modulate the Pulse Width, Envelope and Arpeggiator independently.

A very flexible and fun synthesizer, other cool tricks up its sleeve include chord memory and an effects mode in which oscillators have a variety of ways to be synced. The built-in arpeggiator and sequencer can run all 4 VCO's at a time or cycle through each voice per note! There's also portamento, CV/Gate, VCF and VCO mod inputs, a white noise generator, and the pitch/mod wheels can be assigned to control LFO, pitch, or the filter.

This synth was imported direct from Tokyo, and as such runs at 100v. All functions are stable and functioning as intended on USA power, 120v "on paper," but typically ranging between 110-120v.

Cosmetically, this synthesizer is very clean, with only light scuffs on the wood framing the keyboard. All original knobs are intact as are the four rubber feet on the bottom of the enclosure. The original soft Korg-branded green carry case is included, along with some text on the exterior referencing the band Earthshaker."

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