This is a single Telefunken EF86 tube. It was manufactured in Germany by Telefunken for Siemens. This tube was built to rigorous specifications for reduced noise and microphonics. It has the traditional diamond mark imprinted in the bottom of all Telefunken tubes. This tube has a chrome plate, white lettering, and a halo getter. These are highly sought after Telefunken 6267 tubes, act quickly before they sell out!! More available upon request.
Be careful buying tubes from other sellers who list "matched pairs" but do not provide test results or specify the equipment that they use to test their tubes.
I personally tested this tube on my recently calibrated Hickok 600a and TV7D/U tube testers.
The results are as follows:
2,875
| Listed | a month ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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Product safety information may be available here.

