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DIY Audio Electronics from Zynsonix.com: Matsumin Valvecaster Guitar Effects Pedal - Tube Overdrive
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Tube Distortion Schematic | Guitar, Valve amplifier, Diy guitar pedal
Peppermill
12ax7 with Transformer Pre-amp : Booster/OD guitar pedal | Page 2 | diyAudio
Tom's Guitar Projects: RealTube-One - A 12at7 Tube Overdrive Pedal
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StompBoXed - The Guitar Pedal Builders Repository: Valvecaster - Tube Overdrive / Boost Pedal
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The Persuader | Mod Electronics
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Need some advice on a guitar pedal | Forum for Electronics
A DIY valve overdrive pedal – Goldie – Dave Mac's Window on the World
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Tube Distortion Schematic | Guitar, Valve amplifier, Diy guitar pedal
