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The 6AL5 is a dual diode tube used for audio demodulation, rectification, or very low current power supplies. It consists of two individual diode sections with a shared heater.

The W variant was tested to higher vibration standards and found service in industrial or military applications. This unit was made by Sylvania, probably in Emporium, PA, and was overprinted with it’s new spec.

The 6AL5 is a dual diode tube used for audio demodulation, rectification, or very low current power supplies. It consists of two individual diode sections with a shared heater. The W variant was tested to higher vibration standards and found service in industrial or military applications. This unit was made by Sylvania, probably in Emporium, PA, and was overprinted with it’s new spec.

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[–] • 1 pt

They're technology that operates visibly. That and glass tubes full of strange metal bits lends a certain air to itself.

[–] • 1 pt

When tubes red-plate, I get a sexual thrill...is that weird??