Product Documents
Here you will find the build manuals, parts lists, and other useful information:
Official Support Forums
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Vacuum Tube Data Sheet Library
These are the original factory data sheets for most of the tubes you will come across. They contain the definitive specs for each tube type. These aren't recent "marketing sheets", they're the real thing. You may not be familiar with all of them, but most tubes have equivalents that can be substituted and we've included the main ones here.