An awesome sounding and affordable spring reverb module!
If you plan on building this module, you definitely need to check these links for important mods to the circuit:
https://www.soundtronics.co.uk/mfos-v...
https://electro-music.com/forum/topic...
http://musicfromouterspace.com/analog...
The first time I fired this module up, I smoked a diode and got no sound whatsoever because I hadn't read the information above. Don't make the same mistake.

I'm aware the camera angles are pretty awkward at times - I'm still settling on a format, and next time will be better!