Music Technology
How-To: Mod the Monotron mini synth

2CV from Din Sync demonstrates some of the sweet analog sounds which can be produced with a few simple mods made to a Korg Monotron. For those unfamiliar, the Monotron, is a pocket-sized analog synth well suited for hacking/modding.

This little ribbon-controlled unit seems more than a little bit inspired by Gakken’s popular SX-150 analog stylus synth, but unlike the SX, the Monotron comes fully assembled and is much more compact. Overall a very cool design, but really the best feature is revealed once you open up this things enclosure – the PCB’s most hackable points are all clearly labelled:

Monotronpcb Cc

Here’s hoping this sparks a trend and more manufacturers realize how many of their customers have soldering irons (and want to use them!)

Check out 2CV’s write-up and simple schematic for Monotron CV inputs over at

In the Maker Shed:


SX-150 Analog Synthesizer Kit

0 thoughts on “How-To: Mod the Monotron mini synth

  1. Note the complete lack of information on how to modify anything once you’ve opened the device up. Possibly the worst ‘how to’ guide ever written.