Sylvania JAN 6189W Gray Plate Very Well Matched (3.3%) Pair NOS 12AU7 ECC82

This is a very well matched pair of Sylvania JAN 6189W tubes. These tubes were manufactured in the USA. Both of these tubes are visually very similar to each other. They test very close to each other, and stronger than NOS. One of the tubes is perfectly balanced. These tubes have been manufactured to meet the highest military standards, and you can expect low noise and microphonics. Both of these tubes have 16mm gray plates and green lettering. These are excellent Sylvania JAN 6189W tubes that are highly sought after, 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 these tubes on my recently calibrated Hickok 600a and my TV7D/U tube testers and the results are as follows:

2,925/3,000
2,900/2,900