Anybody know where there is some kind of manual this guy? like what's that button for? Website that says it's a function button. not totally useful. I know the switches change the voltage range for midi output, but I don't know which position is which! Stuff like that.

Surprisingly, tesseract's website references a manual but damn if I can find it anywhere.
-- Rastoboy

here's the manual for Sweet Sixteen mkII:
https://docs.google.com/document/d/1rvaKcS-wOBbnOMB0H9HrzdNHnodiLj01HjdzqZatBg0/edit?usp=sharing