According to the tube list I found here, the 300B is listed as a tube that can be tested.
The tube list link is towards the bottom of the page on the left.
The tube list link is towards the bottom of the page on the left.
TUBE TESTER that will test 300B tubes
I have a long time friend and avid audiophile who has a Heathkit TT-1. He no longer runs tubes, and is willing to sell it to me. Unfortunately, he's not sure if it tests the larger tubes like the 300B. This is kind of a make or break with me, because my monos have a pair of 300B's each. Does anyone know if the TT-1 does, or if not, I'm also open minded to other Tube Testers.
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