Tube Amp Repair and Service

Tube Amp FAQ

Tube Amp Debugging Page

A solid state replacement for the Fender Tremolo

How to design tube output transformers

Vintage AC Power

Carbon Comp Resistors - is the Mojo Factor real?

Amp Repair and Service Topics

Soft Power On Tester for Amps

DIY Bias Probe to make biasing output tubes in your amp a breeze

Transformer Short Tester  - transformer busted? Find out!

How to test a transformer

Star Grounding a tube amp

Point to Point vs. PCB amps - Better Tone????

Bulletproof your Thomas Vox SS amp

Building Repro Cabinets For Vox Amps

Making Repro-style Dust Covers for Vox Amps

The Nature of the Beast

Working position for preamp repairs

Tidbits from an old textbook 

Converting old mono PA and Hifi amps to guitar use