DIY Overdrive/Fuzz/Distortion - The "Blank Slate" Pedal - YouTube
How To Build An Overdrive Pedal Using A Breadboard - Intro To Guitar Pedal DIY Part 1 - YouTube
Tom's Guitar Projects: RealTube-One - A 12at7 Tube Overdrive Pedal
Amazon.com: DIY Your Genuine Overdrive Guitar Effect Pedal All Kits US2 : Musical Instruments
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