Peace And Harmony

From the vendor

BOOM! SIMPLICITY! 1 POT AND 2 SWITCHES! 6 TRANSISTORS RIPPING YOUR SIGNAL TO SHREDS! THAT IS ALL YOU NEED TO KNOW!!!!!!!!

Oh and by the way this PCB will let you build a clone of the Harmonic Transformer by Death By Audio.

Build Docs

You can also get this as a kit from Musiking here Klaus also did a way better job at describing what the pedal actually does than me...