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Forum Home > Layout Gallery - GuitarPCB Build Documents, Mods and Tips > Three Time Champ

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Go from clean Boost to Powerful Overdrive!


Stack it for some heavy Distortion!


The idea for this project is to stack three Fetzer based circuits with the right combination of FETs biased to perfection yeilding you a big sound out of your amp without needing to crank the amp itself. It also can be moddable to taste, to suit your own rig.


Biasing is mandatory to make this circuit sound correct.

Note: If you have trouble Biasing down to the correct Voltage you may substitute the 1k Resistor working  from Q1 to Q3 with a simple jumper as needed. You may only have to do this once, starting with Q1 bias resistor which is R3. R6, and R9 would be next in line if needed.

Transistors are not all created equal so this is a solution to solve a problem if you cannot get your drain leg bias down below 6v.


Read the Crash Course material, if needed for info on how to bias.

Build Document

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Welcome to my informational signature:

See our Home Page for all Guides!

Check the Layout Gallery section of the Forum and find your project before building.

Pre-Build Reading Guides:  Crash Course#1 , Crash Course#2 & Tips, Tricks and Tutorials.

Troubleshoot threads must have pictures and voltages.

All builds are 100% verified. Be sure to use Genuine Transistors and IC's

Any serious builder should have an Audio Probe to diagnose problems quickly.

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August 16, 2014 at 10:25 AM Flag Quote & Reply

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