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Vacuum tube - Simple English Wikipedia, the free encyclopedia
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1 Pair PSVANE Vacuum Tube 805 Tube Amplifier 4 Gold Pins Ceramic Base 805A|Amplifier| - AliExpress
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Tung-Sol KT170 Power Tube | KT170 TUNGSOL | Electro-Harmonix
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Scientists Are Bringing Back Vacuum Tubes for Computers of the Future
