runoffgroove.com projects are provided free-of-charge to builders for personal, non-commercial use. We do offer licensing for builders who wish to sell pedals based on, in whole or in part, our projects. As part of the licensing agreement, the builder must clearly state that the circuit was developed by runoffgroove.com, both in promotional literature and on the circuit board. If you see a pedal for sale that seems to be based on a runoffgroove.com project and does not credit us, the builder may not be officially licensed by us and therefore, not compensating us as the developer. Please contact us with the information and we will investigate the situation. Thank you.

Azabache - An original overdrive inspired by classic Fender amps. Schematic, PCB/perfboard layouts, and photos.
Britannia - An original overdrive inspired by the Vox AC-30 Top Boost amp. Schematic, PCB/perfboard layouts, and photos.
Build a breadboard power module - Simplify integrated circuit breadboard projects.
Condor Cab Sim - A professional-quality 4x10 open-back speaker cabinet simulator. Includes PCB layout.
Double D - Two channels of buxom distortion. Schematic and PCB/perfboard layouts.
Eighteen - The Marshall 18W adapted for use as a distortion stompbox. Schematic, PCB/perfboard layouts, and photos.
FAQ - Frequently Asked Questions about runoffgroove.com and its content.
Fetzer Valve - A closer look at the FET booster based on a vintage Fender 12AX7 input stage. Schematics, PCB/perfboard layouts, JFET tester schematic, and online calculator.
Ginger - The Ampeg SB-12 Portaflex adapted for use as a bass guitar distortion stompbox. Schematic and PCB/perfboard layouts.
4069:4049 - Build a module to allow using 4069 CMOS chips in 4049-based layouts.
Grace / Big Daddy - Two 386-based distortions. Article, schematics, and PCB/perfboard layouts.
Little Gem - Two 9v battery-powered amps based on the LM386. Schematic and PCB/perfboard layouts.
MacRuby - A Macintosh Plus computer converted to a combo amp, powered by the Ruby. Includes a video demo.
May Queen - A stone cold crazy treble-boosted overdrive. Schematic, PCB/perfboard layouts, and photos.
Mr. EQ - A simple, yet potent DIY equalizer. Schematic, PCB/perfboard layouts, and photos.
Mockman - Schematic of a Rockman-like distortion. Schematic and PCB/perfboard layouts.
Omega - A versatile FET booster engine. Schematic and perfboard/PCB layouts.
Perfboard Templates - Templates for drawing perfboard layouts.
Peppermill - A simple, transparent overdrive. Schematic and PCB/perfboard layouts.
Phozer - A faux-phaser circuit with LFO and manual (wah pedal) modes. Schematic and and PCB layout.
Ruby - A refined and updated Little Gem amplifier. Schematic, PCB/perfboard layouts, and photos.
Splitter-Blend - Dual parallel buffered effect loops with blend control. Schematic and perfboard/PCB layouts.
Supreaux Deux - The Supro 16T adapted for use as a distortion stompbox. Schematic and perfboard/PCB layouts.
Thunderbird - An original distortion inspired by a cranked Marshall Super LEad amp. Schematic, PCB layout, and photos.
Tonemender - An ultra-flexible tonestack with clean boost. Schematic, photo, and PCB/perfboard layouts.
Tri-Vibe - A versatile modulation effect that offers true vibrato. Schematic, PCB/perfboard layouts, and photos.
22/7 - A CMOS implementation of the Big Muff Pi with a flexible tonestack. Schematic and PCB/perfboard layouts.
Tube Reamer - Tube Screamer-based overdrive. Schematic, PCB/perfboard layouts, and photos.
UBE Screamer - A CMOS implementation of the Tube Screamer. Schematic and perfboard layout.
Umble - A distortion stompbox, inspired by Dumble amplifiers. Schematic and PCB/perfboard layouts.
Uno - The Boogie MkI adapted for use as a distortion stompbox. Schematic and PCB/perfboard layouts.
www.home-wrecker.com - Our official archive of older, mostly clone-related DIY-fx information and many sound clips.