After years of trial and error and poking around, I’ve come up with a list of resources I have found helpful. Enjoy!
KNOWLEDGE BASE
| 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 ꭒF – nF – pF Conversion |
| AKAVALVE | Tube amp troubleshooting |
| The Valve Wizard | Great guy – All about tube amps |
| GEOFEX | Tube amp resource, effects |
| BMAMPS | Huge schematics library |
| Resistor Codes Calculator | Resistor color code calculator |
| 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 | I hang out here sometimes |
| DIY TUBE | Tube amp forums |
| Schematic Heaven | Schematic Heaven |
| 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 |
| 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# |
| Guitarium and Ampeteria | Database of Fender guitars & 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 |
| 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 |
| Uncle Spot | Fender input jacks |
| Mic Kaczmarczik | Fender Information. Vast. |
| The Amp Garage | Tube amp builders talk about tube amp stuff |
HARD-TO-FIND PARTS
| 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 |
| 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 Vintage Electronics | 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. |
| Parts Express | Electronics, electronics everywhere. |
| ClassicTone Transformers | Accurate, paper-wound reproductions of many classic transformers |