Layout updated. If you want to build this now I would suggest you build this version
http://tagboardeffects.blogspot.com/2014/02/keeley-katana-boost-layout-rev-2.html
Vero layout for this popular pedal with built in charge pump to provide the required 18V from a 9V supply.
UPDATE (09-02-2012):
The schematic that this layout was created from has been shown to be incorrect. In the scheme the switchable 10u cap was linked to the source of Q2, this in fact needs to link to the source of Q1. Apologies to anyone who has made this up, but it is a quick fix, just unsolder the cable and re-solder it into it’s new home as per the updated layout below:
