Erica Synths DIY Hi-Hat module

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Erica Synths DIY Hi-Hat module

Erica Synths
Words by Mixdown staff

Erica Synths are looking to help you to create your sounds from scratch. But how about literally building them from the ground up?

Erics Synths are doing their damndest to educate and inform a new generation of players, or maybe an older generation trying to learn some new tricks! Their Bullfrog synth was designed specifically to take you through some synthesis conventions, and the new EDU DIY Hi-Hat takes this a step further.

Synthesized, analog Hi-Hats are pretty fascinating. That’s because emulating any kind of cymbal using an analog circuit is tough, since the sound a real cymbal produces is not quite pure noise, but also not really harmonic.

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Still, a couple classic drum machines like the Roland TR-606 and TR-808 took their best shot at it, with quite strange sounding results that have since become iconic in electronic music. Inspired by this, they decided to follow suit and continue our percussion-focused second season of educational DIY kits with the mki x DIY Hi-Hat.

Build your own hi-hat sound, inspired by some classic units. The EDU DIY Hi-Hat module fits standard eurorack style enclosures.

Erica Synths and Moritz Klein have developed the series of educational DIY kits under the brand name mki x es.EDU with one specific goal in mind: to teach people with little-to-no prior experience how to design analog synthesizer circuits from scratch. What you’ll find in the box is not simply meant to be soldered together and then disappear in your rack. Instead, we want to take you through the circuit design process step by step, explaining every choice we’ve made and how it impacts the finished module.


  • TR-808 inspired circuit
  • Manual Tune, Decay and Tone controls
  • CV controlled Tune and Decay
  • Accent input

Keep reading about the EDU DIY Hi-Hat module here.