# Tormod's Tube Library

> The ultimate reference for vacuum (electron) tubes. Specifications, equivalents, NOS data, pinouts, manufacturers, and tools to build and manage a tube collection.

Tormod's Tube Library catalogs over 500 vacuum tubes used in audio, guitar amplifiers, and vintage electronics. Each tube entry includes technical specifications, equivalents and near-equivalents, pinouts, NOS and current producers, and contextual descriptions in English and Norwegian.

## Pages

- [Home](/): Search and browse the tube library.
- [All Tubes](/all-tubes): Full sortable, filterable catalog of every tube.
- [Producers](/producers): Manufacturers, history, and known production.
- [Compare Tubes](/compare): Side-by-side comparison of tube specifications.
- [Decoder](/decoder): Decode tube codes (Philips, Telefunken, Siemens, EIA, Soviet).
- [About](/about): About the project and its author.
- [Feedback](/feedback): Suggest corrections or additions.

## About Tubes (English)

- [About Tubes](/about-tubes): Educational hub for vacuum tube fundamentals.
- [How a Vacuum Tube Works](/about-tubes/how-a-vacuum-tube-works): Physics and operation principles.
- [Tube Naming Systems](/about-tubes/tube-naming-systems): RETMA, Philips/Mullard, Soviet, military codes.
- [Tube Equivalents](/about-tubes/tube-equivalents): Direct, near, and pinout-only equivalents.
- [NOS Tube Testing](/about-tubes/nos-tube-testing): How NOS tubes are graded and tested.
- [Tube Anatomy](/about-tubes/tube-anatomy): Internal construction and components.
- [Visual Identification](/about-tubes/visual-identification): Identifying tubes by appearance.

## Om Rør (Norwegian)

- [Om Rør](/om-ror): Norsk versjon av kunnskapssidene om elektronrør.

## Optional

- [Privacy](/personvern): Privacy and cookie policy.