JJ / Tesla 300B

The JJ 300B are precision matched at the factory. They come with a hand filled test sheet. These are a great alternative to the higher priced and hard-to-find 300B tubes.

Price is for a Matched Pair

For maximum performance and longevity, vacuum tubes should always be stored and transported in a safe and secure fashion. The TubeCube and the TubeCube Pro provide a customizable shock-resistant environment for your tubes and helps prevent them from becoming microphonic or damaged.

Shipping for $4.95 >>>See Limitations<<<
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JJ / Tesla 300B