6 HP
34 mm deep
Current Draw
? mA +12V
? mA -12V
? mA 5V
$20 Price in €

Module is available as a DIY project only.

This Module is currently available.

Specs are approved by the manufacturer

All discrete vintage-synth style Envelope Generator


A nice vintage style envelope generator (EG) for Eurorack systems. This EG uses all discrete components (no ICs or IC sockets) so it's cheap, fun and easy to build.

The EG can be switched between ADSR and ADSD mode with a front panel push button. In ADSD mode the Delay pot controls the delay and the release parts of the envelope just like some popular synths of the 1970s and 1980s.

This EG outputs an exponential curve and has a re-triggerable gate.


  • Standard 0 to 10V envelope customizable to 5V
  • Exponential envelope curves
  • Gate mode: When gate held, envelope follows ADS stages. When gate released, R stage begins.
  • Switch between ADSR and ADSD modes. Push in the button to invoke the Release pot.
  • Fun and easy to build with all discrete semiconductors.
  • For keyboard controllers with retrigger output, you can reset the envelope to the attack phase.
  • 6HP Eurorack with our panel


Comprehensive documentation and parts lists are provided in the documentation link for building, testing and calibrating the module.


submitted Feb 19th 2019, 00:25 by jnfrench | last Change Feb 19th 2019, 00:34 by jnfrench

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