Korg Mono/Poly with Tubbutec ModyPoly MIDI upgrade

One of the most unusual and desired monophonic synths.

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Korg Mono/Poly has always both attracted and puzzled the prospective owners. It’s still quite common to come across various myths surrounding this great instrument. But there is no rocket science, really. This is simply a very, very well specified monosynth with some polyphonic capabilites.

A few things to remember, though:

– It has four oscillators but do not bother trying to figure out whether this makes the Mono/Poly ‘better’ than a Minimoog. They are apples and oranges. As different as it gets.

– The effects section is not effects in the common sense (chorus, phaser, delay, etc.). they are in fact a modulation section, offering various types of oscillator sync anc corss modulation.

Contrary to what some may say, we find the M/P quite easy to use. Definitely intuitive. The Tubbutec upgrade takes a few days to understand and master but it is an absolute must: very reliable and very clever.

As far as the Tubbutec upgrade is concerned, please visit Tubbutec page for details:

But in simple terms, this is an absolutely excellent upgrade that will, of course, give you MIDI IN & OUT but also additional poly modes (3 voice with 2 oscillators per note and 2 voice with 3 oscillators per note), so called “Powerarp” that is a simple but very useful sequencer, S/H (random) LFO mode for filter and an additional, very fast LFO for filter, “Polychord” wchi is chord memory on steroids (each key of the keyboard can store a different chord in this mode) and many more. It’s really brilliant.

One more thing: it’s really stable. Believe us, not all upgrades are.


2500 EUR (3075 EUR with 23% VAT) – for version with Tubbutec MIDI

2300 EUR  (2829 EUR with 23% VAT) – for stock version without MIDI

Please click on the “Contact” tab in the top right corner of the page if you are not sure whether VAT applies to you.



Q: Is this a monophonic synthesizer or a polyphonic one? I do not quite understand the difference.

A: Consider it to be a very complex monophonic synthesizer with limited polyphonic capabilities. By no means is this a fully polyphonic instrument! In simple terms, for a synthesizer to be polyphonic, each of the voices will need its own oscillator, filter and amplifier. Once it’s made to play and sound, every voice will leave its own life, meaning it will be independent of other voices. In the case of the Mono/Poly, we indeed have four oscillators but only one filter and one a amplifier. So if you decide to play one four note chord at a time, it will act as any other polyphonic synthesziser. But if you play notes in succession, it will definitely not sound as one.

Q: Which should I get, a Mono/Poly or a Polysix? They look similar.

A: They are sister instruments, yes, but they are very different machines. To know which one you should getm you must ask yourself about what you need in the first place. If you want to be able to create complex sounds and textures, go for the Mono/Poly. However, if you need to be able to play big, very warm, even huge chords, go for the Polysix.