Pin by Pedro Augusto Santana on Fuzz/octaves | Diy guitar pedal, Circuit diagram, Guitar pedals
Here's a very cool synthy sounding octave down / up invented by Slacker (the creator of The Echobase). Origi… | Diy guitar amp, Diy guitar pedal, Electronics basics
Fuzz Central -- Tycobrahe Octavia
File:Dan Armstrong Green Ringer circuit - an octave-up effect with a ring-modulator touch to it - just finished building (2006-03-05 22.51.45 by germanium).jpg - Wikimedia Commons
The Valve Wizard
Octave Up Pedal : 15 Steps (with Pictures) - Instructables
Octave Up Pedal : 15 Steps (with Pictures) - Instructables
Guitar FX Layouts: Octave Up Sick Box
The Rotund Robot (2) – analysing schematics – Champion Leccy