Tung-Sol 5687 Black Plates, Horseshoe Getter, Matched (4.7%) Pair NOS 5687
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This is a matched pair of Tung-Sol 5687 tubes. They were made in the USA by Tung-Sol. Each one of these tubes tests very closely to the other. These tubes are visually very similar. They were manufactured to rigorous industrial standards, so you can expect low noise and microphonics. These tubes have long black plates, faded or white lettering, and a horseshoe or D shaped top getter. These are highly sought after Tung-Sol 5687 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:
10,500/10,000
10,500/10,250
| 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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