This category contains listings of tubes, circuits, data sheets, and replacement guides. You will also find some sites that have vacuum tube design data and theory.
Business: Electronics and Electrical: Components: Vacuum Tubes
Business: Consumer Goods and Services: Electronics: Audio: Amplification: Vacuum Tubes
Science: Technology: Electronics: Audio and Video
Recreation: Audio: Do-It-Yourself
Recreation: Radio: Amateur: Boatanchors: Tubes
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