Amp Technician Registry - Clickable map of countries and US states from Weber Speakers leads to lists of repair technicians for amps, speakers, microphones and effects. Contact information, links, approximate fees, free submissions.

Angela Intruments - Tubes, speakers, transformers, and other parts for vintage guitar and bass amplifiers. Also instrument parts.

Audio Restoration - Step by step information about to audio amplifiers repair projects.

Nashville Amplifer Service - Repair, restoration and modification of solid state and tube amps.

Plexi Palace - Repair and restoration of vintage amplifiers. Sales of amplifier parts. Additional information and photos of vintage amps.

Time Electronics - Guitar and bass amplifier repair and mods.