This is a well balanced single Sylvania 6SL7GT vacuum tube. This tube was made in the USA by Sylvania. The plates test close to each other, well balanced. This tube was manufactured to rigorous industrial standards, so you can expect low noise and microphonics. This tube has a tall clear glass envelope, round black plates, chrome dome, and green lettering. These are highly sought after Sylvania 6SL7GT tubes, act quickly before they sell out!! More available upon request.
Be careful buying tubes from sellers who claim matched tubes without providing measurements or the equipment that they used to measure 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:
1,775/2,050
| Listed | a year ago |
|---|---|
| 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.

