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6F2/ECF82 Vacuum Tube
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Who killed the vacuum tube? - lcamtuf's thing
Vacuum tube - Wikipedia
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Jj electronic 6550 Single Power Tube Válvula
TC Electronic TUBE PILOT OVERDRIVE Pedal de sobremarcha de tubo real equipado con 12AX7 con sonido cálido y expresivo : Amazon.es: Instrumentos musicales
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