JUST IN! I just got in two (2) Mullard Blackburn military mil-spec matched tube pairs. These are the dual designated tubes that have both the Mullard logo/markings and the CV2975 print. They are NOS tubes in military boxes (the pin protectors are missing) and have been run in and tested/matched by me personally both for cathode current and transconductance. The two pairs are close enough to each other that they could be used as a matched quad!
These rare tubes are really hard to come by and may be the most sought after EL84s out there.
A matched pair is $139.50. Add $7.95 for shipping to any US address - higher for international destinations.
Thanks for looking!
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