This module is an exponential ADSR envelope in one Frac space. Wide range controls for a punchy sound or extended modulation times.

Based on the ASM ADSR envelope courtesy of Elby Designs.


  • Attack - sets attack time from 1ms to 5 seconds
  • Decay - sets decay time from 1ms to 10s
  • Sustain - determines sustain level from 0 to 10v
  • Release - sets release time from 1ms to 10s


  • Gate input - positive voltage fires the envelope
  • Envelope output - outputs contoured voltage

Frac spaces: 1

Current draw: 25ma

Price kit: :$80

Price assembled: :$105