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Description
This is a vacuum tube for audio. (pair, 2 pieces)
It is Western Electric's 300B (made in America from 1938). It is commonly known as WE300B, and there are many similar products.
It was used in the sound system of movie theaters, but with the advent of transistors, demand disappeared, but it has been reproduced several times due to its good sound quality, but the one we will be exhibiting this time is in 2021. This is a reprint version whose production has started since.