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Single Ended Triodes (SETs), the ultimate tube lovers dream.

RE: How long did you run them in before hitting them with high voltage?

I have 866's in my 6CB5A amps. The filter is single stage L-C, and there is a big flash when the plate transformer gets power to its primary. They are Class A, PP so there is no variability to the observed glow...though selecting tubes with a larger shield to anode gap leaves a bit more of the blue cream floating around in the envelope...:) I would love to find some un-shielded globes.

Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

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