**RARE** Tungsram 12AX7A Gray Plate Very Well Matched (4.3%) Pair NOS ECC83 12AX7

This is a very well balanced pair of Tungsram 12AX7A tubes. They were made in Hungary by Tungsram, one for Siemens and one for National Electric. Vintage Tungsram tubes have a very unique getter support structure stamped with a number as can be seen in the second picture. These tubes were manufactured to rigorous specifications for reduced noise and microphonics. These tubes have short gray plates, red or white lettering, and halo getters. These are highly sought after Tungsram 12AX7A 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:

2,225/2,300

2,325/2,275