This is a Madbean Afterlife (John Hollis Flatline) that I added a sensitivity control to. The Sens knob adjusts the dynamics, which can help with higher or lower output guitars but also lets you add sustain without affecting your dynamics as much, or get a super squishy sound. One of my favorite mods, and it's super easy - just a series resistor and a pot.
Check out the madbean forum for a build report.
Gear used:
Don Quixotecaster
Tone King Imperial
Nikon Handheld - sorry for the extra compression mucking up the sound! :(