Hard Boost

This is a tiny (19x20mm) PCB to build a clone of the Zvex Super Hard On
It is perfect as an add-on to add gain or volume to an existing pedal with an internal trimpot.
Of course you can also build a stand alone pedal with a potentiometer.
The build document also shows you how to build a clone of the Zvex Super Duper 2in1 using 2 of these PCBs.
Have fun!

Build Docs