A large online repository or library of guitar pedal schematics
DALLAS RANGEMASTER Clone (Verified)
Soldano Preamp MK2
StompBoXed - The Guitar Pedal Builders Repository: Dallas
4×4 Fuzz Experiment Pedal
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Guitar FX Layouts: April 2012
Guitar FX Layouts: February 2014
DIY Layout Creator
Guitar FX Layouts: Catalinbread Naga Viper