Back to Posts

Fully modded: Monotron Delay

Posted in Modding, SDIY, Monotron

Korg’s Monotrons are a great toy. Especially because they were obviously build modding friendly. I modded both this Monotron Delay and a normal Monotron. Both toys were turned into an awesome, but still not to serious synthesizer.

The feature list

  • replaced all the fiddly pots with normal sized ones
  • replaced Monotrons toggle switch (off - triangle - square) with a new switch
  • put the LFO LED to the front
  • added the missing pitch control pot (the Delay comes without it)
  • added the missing resonance control pot (the Delay also comes without this)
  • added patchpoints for CV, cutoff frequency, gate and external in (check dinsync)
  • added a simple switch to choose the LFOs target, this can now go to cutoff, pitch and delay-time
  • added a PitchWheel, which can be patched either into pitch or cutoff
  • added a little “sampler” based around the ISD1820-chip. This gives a nice extra!
  • added switch to choose between LFO mode between one-shot EG and LFO (check houshu)
  • added feedback, the output going back to the input through a simple diode
  • removed R11 to avoid the gate voltage affecting the pitch. Also puts Monotron in “Drone-Mode”
  • switch to turn VCO off (check houshu)

It really is too bad that I never took a picture with the thingies on the sliders …


Fully Modded Korg Monotron Delay Demo from Tom Mueller on Vimeo.

More pictures

monotron delay 1 monotron delay 2

I am a traffic engineer, programmer, music enthusiast and most of all a creator of things. On this website I present you a broad collection of things I made. Enjoy, get inspired and do not hesitate to contact me with any questions.

Read Next

Fully modded: Monotron