Category Archives: Guitar Effects



DOD FX75 Flanger Guitar Effect Pedal

This is the circuit diagram of DOD FX75 Flanger guitar effect pedal. The circuit drawn by Fabian P. Hartery. Featuring a Width control and two output jacks, the FX75 was much more versatile than its predecessor, but the flanging effect it could provide was still not very intense. That said, chorus-like washes of flange can… Read More »

Distortion Booster

The following circuit is an distortion booster effect for your electric guitar. I don’t know whether this circuit is really works or not, you may try this circuit with your own risk. The circuit is very simple with required only ten electronic components : two transistors, two diodes, five resistors and two capacitors. Supply voltage… Read More »

VOX Treble Booster Effect

The following scheme diagram is the circuit diagram of VOX treble booster effect. A treble booster is an effects unit used by guitarists to boost volume and especially the high end of their tonal spectrum, and was popular mostly during the 1960s. VOX made a variety of boosters that were meant to be plugged directly… Read More »

BOSS Slow Gear SG-1

This is the circuit diagram of BOSS Slow Gear SG-1 effect for electric guitar. The Slow Gear SG-1 effect sounded like a guitar player riding the volume knob of the guitar. This produced a cool swelling sound with a gradual attack, almost like a violin. At $99.50 original retail price, the Slow Gear was a… Read More »

Guitar Pre-Amp with JFET 2N5457

Designed by Don Tillman, this guitar pre-amp circuit design is dedicated for people who don”t like op-amps module. This circuit is a discrete JFET pre-amplifier design, use 2N5457 as the main component. It has low noise, low distortion, low feedback, overloads gracefully, is small, etc.

Tube Sound Fuzz Mods

This tube sound fuzz mods circuit is taken from the book of Electronic Projects for Musicians by Craig Andertons. This circuit applies a CD4049 Hex inverter, which consists of six inverting units. Only two are being used in this circuit, so the others are disabled by connecting their inputs to the positive voltage source and… Read More »



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