Sylvania 12AU7 Long Black Plate Perfectly Balanced Single NOS 12AU7A ECC82

This is a perfectly balanced single Sylvania 12AU7 tube that was made in the USA by Sylvania. This tube was manufactured to rigorous industrial standards, so you can expect low noise and microphonics. Each of the triodes tests closely to the other. This tube has long black plates, faded or yellow lettering, and square top getter. These are highly sought after Sylvania 12AU7 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 hand tested these tubes on my recently calibrated Hickok 600a and TV7D/U tube testers.

The test results are as follows:

2,900/2,900