The Befaco Instrument Interface can bring vocals, guitars and synths into your Eurorack via a preamp with phantom power. It also has an envelope follower for generating envelopes, gates and triggers from the incoming signal. Marvel as I expertly put this module together with my bare hands and a soldering iron.

http://www.befaco.org
http://www.moltenmodular.com
  / robinvincent  

Intro 0:10
Bag A Resistors 6:18
Bag A Diodes 15:15
Bag A Capacitors 18:10
Bag A Transistors 21.23
ICs, sockets, chips and male pin headers 22:33
Bag B Capacitors 30:25
Bag C Mechanicals 34:01
Patch sockets, knobs, LEDs and the Front Panel 42:00
Testing see the next video!