Schematics

Here is a list of the schematics that are exclusive to this site. We created several and we have redrawn some schematics that were already available on the internet for readability or ease of use (these needed an easier-to-read format, corrections or part identifiers). Many of these schematics include “modernization” that are included and explained in the “Project” for the given schematic. You may freely post links to any of the pages or files on this site, but please do not put copies of these files on your site. We frequently update our files. If you want to see photos of the original units of any of these guitar effects see our “Originals” board on Pintrest Note: All Trademarks mentioned here belong to their owners and not to General Guitar Gadgets

Klon Centaur Schematic and Project, Kit and PCB in the DISTORTION section. 384 Amp Sehcmatic PCB and Kit in the AMP section!

(June 29, 2020)

Amplifiers & Headphone Amps

LM384 5 watt Amp	Kit	PCB	Project
“Smokey” Type Amp (386 IC)		PCB	Project
MXR Headphone Amp		PCB	Project

Bass

Adamu Bass Distortion	Kit	PCB	Project
ColorSound Bass Fuzz	Kit	PCB	Project
Deluge Bass Distortion	Kit	PCB	Project
Electro-Harmonix Hog’s Foot		PCB	Project
Ibanez BP10 Bass Compressor Ibanez BP10 Bass Compressor (modernized and simplified)	Kit	PCB	Project
Krampus Bass Overdrive	Kit	PCB	Project
Maestro Brass Master	Kit	PCB	Project

Boosters and Volume (Including Tone Boosters)

Alembic StratoBlaster Alembic StratoBlaster (Modernized)	Kit	PCB	Project
Apollo Tone Booster	See Orange Tone Booster below
Dallas Arbiter Rangemaster	Kit	PCB	Project
Dan Armstrong Red Ranger Dan Armstrong Red Ranger Modernized Version			Project
DeArmond Volume Pedal
Electro-Harmonix LPB1 & LPB2	Kit	PCB	Project
MXR™ Micro Amp	Kit	PCB	Project
Pad Box (passive volume)			Project
Orange Tone Booster Orange Tone Booster (NPN Transistor)	Kit	PCB	Project

Compressors

ColorSound SupaSustain			Project
Dan Armstrong Orange Squeezer Compressor	Kit	PCB	Project
DOD 280A Compressor DOD 280A Compressor with modifications DOD 280 Compressor			Project
Ibanez CP10 Compressor Ibanez CP10 Compressor (modernized and simplified)	Kit	PCB	Project
MXR Dynacomp Compressor		PCB	Project
Ross Compressor		PCB	Project

Direct to Console/PA

Direct Box – Active			Project
Direct Box – Active with Transformer Isolation			Project Coming Soon
Direct Box – Simple Passive Direct Box
Direct Box – Simple Passive Direct Box with Jensen JT-DB-E Transformer
Direct Box – Passive Direct Box, Jensen JT-DB-E Transformer, with extras

Distortion

Boss OD-1	PCB	Project
Boss SD-1	PCB	Project
Brown-Sound-In-A-Box II	Kit		Project
DOD Overdrive 250	Kit	PCB	Project
Electro Harmonix Big Muff – Green Russian Electro Harmonix Big Muff – General Guitar Gadgets Version Electro Harmonix Big Muff – Late 70’s (3rd) Version Electro Harmonix Big Muff – Ram’s Head Electro Harmonix Big Muff – Triangle Electro Harmonix Big Muff – Violet Ram’s Head	Kit	PCB	Project
Electro Harmonix Big Muff – 80’s with Tone control bypass
Electro Harmonix Muff Fuzz (transistor)		PCB	Project
Gus’ IC Muff Fuzz Mods 1
Gus’ IC Muff Fuzz Mods 2
Fulltone Fulldrive 1
Fulltone Fulldrive 2
Guild Foxey Lady (3 knob)		PCB	Project
Ibanez Sonic Distortion (SD-9)	Kit	PCB	Project
Ibanez Sonic Distortion (SD-9) with mods
Ibanez TS-808 with True Bypass	Kit	PCB	Project
Ibanez TS-808 Original
Klon Centaur (Original Wiring) Klon Centaur (True Bypass Wiring)	Kit	PCB	Project
Marshall BluesBreaker (Original Wiring) Marshall BluesBreaker (True Bypass Wiring)	Kit	PCB	Project
Marshall The Guv’nor (Original Wiring) Marshall The Guv’nor (with Modern Improvements)	Kit	PCB	Project
OC Dist	Kit	PCB	Project
ProCo Rat Replica (Rodent)	Kit	PCB	Project
MXR Distortion +	Kit	PCB	Project
Red Fuzz Distortion	Kit	PCB	Project
Ross Distortion	Kit	PCB	Project
Roland Bee Baa Distortion/Booster	Kit	PCB	Project

Filters, etc.

Bi-Filter Follower (Craig Anderton’s) Bi-Filter Follower (Craig Anderton’s) with modifications by Mark Hammer			Project
DOD 440 Envelope Filter			Project
Heil Sound – The Talk Box			Project
Maestro Envelope Modifier
Maestro Filter – Sample and Hold FSH-1 Maestro Filter – Sample and Hold FSH-1 (Modernized) Maestro Filter – Sample and Hold FSH-1 (with Modifications)			Projects
Musitronic Mutron III Envelope Filter		PCB	Project
Musitronic Micro V Envelope Filter	Kit	PCB	Project
MXR Envelope Filter MXR Envelope Filter with modifications			Project

Fuzz Tones

ColorSound JumboTone Bender		PCB	Project
ColorSound Supa ToneBender		PCB	Project
ETI 1 Transistor Fuzz Pedal
Easy Face (Joe Gagan’s) with input cap switch
Dallas Arbiter Fuzz Face (Germanium) Fuzz Face Silicon Version Easy Face (Joe Gagan’s) Fulltone ’69 Fulltone ’69 (NPN) Fulltone ’70	Kit	PCB	Project
Jordan BossTone	Kit	PCB	Project
Maestro Super Fuzztone FZ-1S Maestro Super Fuzztone FZ-1S (with True Bypass)			Project
3 Transistor Fuzz (Gus Smalley’s)
Shin Ei Companion Fuzz	Kit	PCB	Project
SolaSound ToneBenders	See ColorSound ToneBenders below
ToneBender Mark II Professional (ColorSound) ToneBender Mark II Professional (Color Sound) NPN version ToneBender Mark II Professional (ColorSound) Silicon Transistor Version	Kit	PCB	Project
ToneBender III (ColorSound) ToneBender III (Fulltone Soul Bender) ToneBender III (Prescription Electronics Yard Box)	Kit	PCB	Project
Vox ToneBenders	See ColorSound ToneBenders Above

Modulation, Echo, etc.

AD3208 Analog Echo Unit			Project
Ibanez CS9 Chorus
Echo Unit (Dean Hazelwanter)
EXH Deluxe Electric Mistress (SAD1024 Version)Schematic EXH Deluxe Electric Mistress (SAD1024 Version) Layout Details
PT80 Echo Unit	Kit	PCB	Project

Octave Effects

Ampeg Scrambler Ampeg Scrambler (Modernized) Ampeg Scrambler (Modernized, 3 knob, added Volume Control)	Kit	PCB	Project
Dan Armstrong Green Ringer	Kit	PCB	Project
fOXX Tone Machine	Kit	PCB	Project
Octave Up Sick Box (Gus Smalley’s)
Simple Octave Up (Gus Smalley’s)
Ty* Octav* Ty* Octav* (with Modern Improvements)	Kit	PCB	Project

Phase Shifters

Electro-Harmonix Bad Stone Mark II
MXR Phase 45	Kit	PCB	Project
MXR Phase 90	Kit	PCB	Project
MXR Phase 100			Project

PowerSupplies

Regulated Power Supply

PCB

Project

Reverb

Digital Reverb	Kit	PCB	Project
Stage Center Reverb Schematic (Craig Anderton’s) Spring Reverb Schematic (Improved Stage Center Reverb)			Project

Switchers & Routers

A/B Switch Box	Kit		Project
A/B/Y Switch Box (Older Morley) A/B/Y Switch Box (3 LED Indicator) A/B/Y Switch Box (Grounded-off A/B)	Kit		Project
Effects Loop Switch Box	Kit		Project
Effects Loop (Dual) Switch Box Effects Loop Toggle Switch Box Effects Loop Toggle Switch Box (with Bybass Switch)	Kit		Project
Effects Order Switch Box Effects Order Switch Box (with LED indicators)	Kit		Project
Buffer		PCB	Project
Dual Buffer		PCB	Project
DOD 270 A/B Switchbox
Micro Mixer		PCB	Project
Mini Mixer	Kit	PCB	Project
Speaker Switch Box			Project
Translocator Switch Box	Kit		Project

Tone Controllers/Boosters

Six Band Graphic EQ

Project

Tremolo

Craig Anderton Tremolo Craig Anderton Tremolo (Moderized)			Project
Craig Anderton Tremolo – Stereo adaptation
Original EA Tremolo (from Electronic Australia Magazine) Improved EA Tremolo	Kit	PCB	Project
Kay Tremolo			Project

Wah Wah

Ibanez WH-10 Wah
Vox 847 Wah Wah			Project

Other

GEO Alternating LED Indicator Circuit
LXH2-Lite – Fender™Type Speaker Cabinet Simulator

Boss Factory Schematics

Thanks to Kate Ebneter for scanning and making these available.