Tube 🆔 help….

  • Thread starter Thread starter JackBootedThug
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JackBootedThug

JackBootedThug

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What are the two on the bottom left? BBP 6 on the label…
IMG_3717.jpeg
 
Whenever you see that plastic looking 'tab' or 'button' inside the glass envelope of a power tube, that's a tell for a Chinese tube. The EL34s have that same feature; and are sometimes labelled EL34M if they are a GT tube
 

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