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Erica Synths Pico EF Envelope Follower

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Pico EF is Erica Synths take on envelope follower module in 3hp! Pico EF features a preamp with +40dB gain (enough to boost even guitar and dynamic microphone signals for use in a modular system), envelope output with adjustable attack time and a gate output with adjustable threshold. The Pico EF can be used as a preamp, overdrive unit or for controlling VCFs with audio signal, or to use with external instruments to control your modular system in other creative and experimental applications.


  • Preamp with adjustable gain 
  • Audio overdrive possibility 
  • Envelope follower with adjustable attack time 
  • Gate extractor with adjustable threshold 
  • Input protection against overvoltage 
  • Protection against reverse PSU connection

Technical specifications:

Preamp boost up to +40dB
Audio output level 10Vptp
Envelope output level 0 - +10V
Gate level +5V
Power consumption 25mA, -15mA
Module width 3HP
Module depth 35mm
_hp 3