Befaco I⁴ ‘Instrument Interface’ – Full DIY Kit

£119.00 (Excl. VAT)

A versatile instrument input module with Preamp, Envelope Generator, Trig extractor and more. This module has a Black panel.

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SKU: Kit_Befaco_Instrument_Interface Categories: , , , Brand: HP Size: 8 HP


Sometimes the interaction between a modular system and other musical instruments (electronic or acoustic) is needed. With an envelope follower circuit we can achieve a direct control of the amplitude of the signal.
It will produce a control voltage proportional to the amplitude. Allowing a real communication between our system and the external sound source.

Instrument Interface is an eurorack pre-amp capable to bring any type of audio signal to modular levels thanks to its amplification circuit.
The module can drive regular and condenser microphones (+48V Phantom Powered) as well as Instrument and Line signals with a very low distortion ratio.
Going further from the regular re-amp operation, Instrument Interface offers some additional extra functions like a Trig/Gate extractor and Envelope Follower circuits, allowing you to use the character of your audio signal in more creative ways


  • Neutrik combo input
  • Phantom power selector
  • Input impedance selector
  • Separated audio & envelope level controls.
  • Envelope follower with attack and decay controls
  • Gate and trigger extractor with threshold selector


Assembly manual | Schematics PDF

Additional information

Weight 0.215 kg
HP Size