BillM Audio Good source for Fender amp mods. especially the Blues Jr. and Excelsior.
EL34 World Amp building resources, schematics, parts, esoterica.
Just Radios Capacitor uF - nF - pF Conversion Chart.
AKAVALVE Tube amp troubleshooting and repair.
The Valve Wizard Great resource - All about tube amps.
GEOFEX Tube amp resource, effects.
BMAMPS Huge schematics library.
Resistor Codes Calculator Resistor color code calculator from Digi-Key.
1959 Tweed Bassman This is the best-sounding Fender amp I have ever heard.
Electronics Forum Debugging your build. Excellent.
Vintage Amps Forum Read about other people's amp problems.
Duncan's Amp Pages How to set the bias on your amp.
Rob Robinette Tube amp forums.
Fuzz Central Dallas Rangemaster.
Hagtech All about snubbers.
Lenard Audio Institute Tube amp data.
The Gear Page Amp forums, excellent.
DIY TUBE Tube amp forums.
Schematic Heaven Schematic Heaven.
eolon.net Various things.
ProGuitarShop Rectifiers explained.
Bias Calculator Weber VST bias calculator.
Amp Design Fun with tubes.
Fender Amps-The First Fifty Years You should read this book.
Day by Day Cartoon My favorite political cartoon (with babes).
Electronics Assistant A handy little electronics calculator.
Vintage Speaker Codes Weber's speaker code lookup.
AMPWARES Amplifier database.
Hoffman Parts list for the AB763.
Serial Numbers Dating Fender amps by Serial Number.
Guitarium and Ampeteria Database of Fender guitars and amps.
Sengpielaudio Frequency - Wavelength calculator.
Weber's Forums Active guitar and amps forum.
TDPRI Forum about Telecasters.
Strat-Talk Forum about, um, Stratocasters.
GEOFEX Debugging your amp build. Useful.
EL34WORLD Common hookups. ( of the electrical variety).
Amp Man Convert Silverface "Balance" control to Blackface adjustable bias.
Online Metals Brass sheet for Fender grounding plates. Make your own!
Blackface Conversion Fender Twin Silverface to Blackface conversion.
Aiken Amps Amplifier Technical White Papers, Good Resource.
Blue Guitar Schematics Smorgasbord. McIntyre Bluesmaker under "Misc Amp Mods".
Okawa Electric Design Many nice calculators for RC filters and etc.
Amp Books Vacuum Tube Calculators.
Free Information Society Audio Electronic Circuit Schematics.
Tri State CWI Fender input jacks. People usually get this wrong. This is the right way.
KnowledgeBase - Resources
Antique Electronic Supply Great source for tube amp parts, resistors, capacitors, hardware.
Darren Riley Guitar and Amp Parts, some you will only find here.
EL34 World Excellent service. Hard-to-find obscure parts; check here first.
Surplus Sales of Nebraska Hard-to-Find carbon comp resistors, mica "domino" caps.
Angela Instruments Tube amp and guitar parts, capacitors, resistors .
Marsh Amplification Amp Cabs, push-back wire, components. Nice People.
Just Radios Resistors and capacitors for tube gear.
Amplified Parts All kinds of parts for tube amps.
Ted Weber Great speakers. Re-coning service.
MojoTone Guitar and amp parts, speakers, kits.
Tube Amp Doctor TAD premium tubes, amp parts, kits.
Electronic Goldmine Rare and esoteric, sometimes delightfully weird.
HardWay, Ltd. Reproduction capacitors, amp repair and restoration, Custom guitars.
Guitar Parts Factory Fender Parts.
Durdel's Music Since 1946. One of the first Fender Dealers. Best music store in Ohio.
The STRATosphere Stratocaster bodies, necks, parts, and more.
Electron Tube Store Make your own vacuum tubes!
Daugherty Pickups Great Strat pickups.
Small Bear Electronics Germanium transistors, effects parts, plans.
Watts Tube Audio Amplifier Parts, large selection of circuit boards.
Kopp Archtops Hand-made, stunningly beautiful archtop guitars in Ohio.
Studio Sound Electronics Vintage Fender Amp Restoration Parts.
Online Metals Here is the cartridge brass sheet to make your own grounding plates.
Sky Craft Surplus Many interesting categories, electronics and otherwise.
Fair Radio The Granddaddy of Surplus Military electronics.
StewMac Guitar Tools and Parts and Information. Good YouTube DIY Videos.
CE Distribution Amplifier and other parts. Diverse. Commercial.