- The AX84TM Project
The AX84TM Project offers homebrew guitar amplifier and effects projects for beginners and experts alike. The project was created to make information freely available for individuals who wanted to design, discuss and/or build music electronics devices like tube guitar amps, while fostering an atmosphere of camaraderie between those who know and those who want to know.
- Educational Encyclopedia, Tube Amplifiers
Tube amp FAQ building or rebuilding hi-fi equipment. ... Tube amplifier schematics archive of some of the best built bass and guitar tube amplifier...