While I know we've posted this previously, I found this layout to be one of the more useful ones. Look into our arch… | Guitar pedals, Boost pedal, Diy guitar pedal
Tom's Guitar Projects: RealTube-One - A 12at7 Tube Overdrive Pedal
The Valve Caster 2.0: Tube Boost and Overdrive : 7 Steps (with Pictures) - Instructables
Tubescreamer
DIY Tube OD Pedal Build | Telecaster Guitar Forum
MOD Mesa Boogie Dual Rectifier Tube Preamplifier Pedal - HiFiStor