Sylvania 6X4 Matched Pair NOS Rectifier 6X4 EZ90
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This is a matched pair of Sylvania 6X4 vacuum tubes. These tubes have a 7 pin tall glass bottle with Sylvania markings on the tubes. They test very strong, with greater than NOS readings. They are visually almost identical to each other. These tubes have black plates, clear glass, red lettering, and top square getters. This is an excellent pair of Sylvania 6X4 tubes that are highly sought after, act quickly before these sell out! More available upon request.
Be careful buying tubes from sellers who list tubes as matched if they do not provide test results or the equipment that they tested their tubes on.
I personally tested these tubes on my recently calibrated Hickok 600a and my TV7D/U and the results are as follows:
Pass/Pass
Pass/Pass
*Rectifiers test on a pass fail scale, they are not measured on gm or transconductance.
| Listed | a year 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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