General Guitar Gadgets is the best DIY stompbox site on the internet! We feature projects, kits and ready-to-solder PCBs.

A list of the schematics that are exclusive to this site. This does not include all the schematic links that I have posted, only the schematics that reside at this site. Thanks to Jeff Musser for the EZ Build schematics and some of the others listed here. You may freely post links to any of the pages or files on this site, but please do not place copies of these files on your site.

We have redrawn some schematics that were already available on the internet. Some needed an easier to read format, some needed corrections and most needed part identifiers on the schematics. We don't really like to duplicate what's already available, but the improved quality is sometimes worth the effort. In addition to his wonderful EZ-Build schematics, Jeff has redrawn some of the schematics that were previously only available as hand-drawn scans.

Boosters and Routers

• Alembic StratoBlaster
• Improved Alembic StratoBlaster
• LPB1 & LPB2
• Mini Mixer
• DeArmond Volume Pedal
• DOD 270 A/B Switchbox

Compressors

• DOD 280 Compressor
• DOD 280A Compressor
• DOD 280A Compressor with modifications
• Orange Squeezer^™ Compressor
• ColorSound SupaSustain

Distortion

• Big Muff^™ - Green Russian                       (Project Page Link)
• Big Muff^™ - Guitar Guitar Gadgets Version  (Project Page Link)
• Big Muff^™ - Triangle                                (Project Page Link)
• Big Muff^™ - Ram's Head                          (Project Page Link)
• Big Muff^™ - Violet Ram's Head                 (Project Page Link)
• Big Muff^™ - Late 70's (3rd) Version           (Project Page Link)
• Big Muff^™ - 80's with Tone control bypass
• Bluesbreaker^™ (Original Wiring)
• Bluesbreaker^™ (True Bypass Wiring)
• Brown-Sound-In-A-Box II (Ed Guidry's)
• Distortion +
• DOD Overdrive 250
• Guild Foxey Lady^™ (3 knob) Thanks to Frank Berend
• Fulldrive 1^™ Thanks to Steve Cerutti
• Fulldrive 2^™ Thanks to Steve Cerutti
• Electro Harmonix Muff Fuzz^™ (transistor)
• Gus' Muff Fuzz Mods 1
• Gus' Muff Fuzz Mods 2
• Sonic Distortion^™ (Ibanez SD-9)
• Sonic Distortion^™ (Ibanez SD-9) with mods/Improvements by Ricky Vance
• TS-808 (Ibanez^™) Thanks to Steve Cerutti
• Vox^™ Suppa Tone Bender^™

Filters, etc.

• Bi-Filter Follower (Craig Anderton's)
• Maestro Envelope Modifier
• Maestro Filter - Sample and Hold FSH-1A
• MXR^™ Envelope Filter
• MXR^™ Envelope Filter with modifications

Fuzz Tones 

• ETI 1 Transistor Fuzz Pedal
• Easy Face (Joe Gagan's)
• Easy Face (Joe Gagan's) with input cap switch
• Easy Face (Joe Gagan's) with input cap blend
• Maestro^™ Super Fuzztone FZ-1S      (Project Page)
• 3 Transistor Fuzz (Gus Smalley's)
• Shin Ei Companion Fuzz                 (Project Page)
• Tone Bender Mark II Professional^™
• Tone Bender Mark II Professional^™ (PNP with negative ground)
• Tone Bender Mark II Professional^™ (NPN)
• Tone Bender Mark II Professional^™ (NPN Silicon Transistor Version)
• Tone Bender^™ III (Colorsound^™))
• Tone Bender^™ III (Boutique Version))

Modulation, etc.

• Bad Stone^™ Phase Shifter Mark II Corrected version from Steve Giles! This is the one to build.
• Ibanez CS9 Chorus
• Echo Unit (Dean Hazelwanter)
• MXR Phase 100
• Pitch Shifter (Dean Hazelwanter)
• Stage Center Reverb Schematic (Craig Anderton's)
  
  
  

Octave Effects

• fOXX Tone Machine^™
• Green Ringer^™
• Octave Up Sick Box (Gus Smalley's)
• Scrambler^™
• Simple Octave Up (Gus Smalley's)
• Tycobrahe Octavia

Tremolo

• Tremolo (Craig Anderton's)
• Tremolo (Craig Anderton's) Stereo adaptation by Dean Hazelwanter
• EA Tremolo (from Electronic Australia Magazine)
• Improved EA Tremolo (from Electronic Australia Magazine)
• Kay^™ Tremolo with Depth control Mod Thanks to Nathan Pugh
  
  

Wah Wah

• Ibanez WH-10 Wah

Other

• GEO Alternating LED Indicator Circuit From Scott Swartz
• Heil^™ Sound - The Talk Box
• LXH2-Lite - Fender^™ Speaker Cabinet Simulator
• Red Ranger^™

EZ Build

Here are some schematics drawn especially for beginners by Jeff Musser.

• Bobtavia EZ Build
• Bobtavia - Matt's Spinal Tap version EZ Build and TEXT to go with it.
• Easy Face (Joe Gagan's) EZ Build
• Easy Face (Joe Gagan's) with input cap switch EZ Build
• Easy Face (Joe Gagan's) with input cap blend EZ Build
• Gus' Muff Fuzz Mods 1 EZ Build
• Gus' Muff Fuzz Mods 2 EZ Build
• Rocket EZ Build
• Octave Up Sick Box (Gus Smalley's) EZ Build
• Simple Octave Up (Gus Smalley's) EZ Build
• 3 Transistor Fuzz (Gus Smalley's) EZ Build
• Headphone Amp EZ Build
• Switch with DC jack and battery wiring EZ Build schematic