Tube Test and Curve Matching

tube-matching
Do you want a perfect matched-pair or a perfect matched-quad?

Does your amp need tubes within a certain bias arrange or plate current range?

Get what you need. Check the test results and the curves before buying. Quote the tube number when you place an order. We will serve it for you but it’s first-come-first-serve.

300B etc. are done, other tubes will follow.