TUBE DATABASE

• NJ7P Tube Database
• Frank's Electron Tube Data Sheets

TECHNICAL REFERENCES & TUTORIALS

• Steve's Tube Pages
• Tubes 201 - How Vacuum Tubes Really Work
• Screen Grids in Audio and RF Modulator Power Tubes
• Basic Electronics Tutorials & Troubleshooting

SCHEMATIC DIAGRAMS

• Tube Cad Journal
• The Fi Primer

PARTS SOURCES

• The Tube Exchange

ONLINE ANTHOLOGIES & DATABASES

• Links
• Duncan Amps

FORUMS

• D.I.Y. Audio Forum
• Welborne Labs

HISTORICAL & MISCELLANEOUS

• Virtual Valve Museum
• Valve Magazine