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Sylvania

NOS NIB Date Matched Pair Sylvania USA 7K7 Black Plate Chrome Dome Vacuum Tube

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SKU:
PS1542
UPC:
7K7
MPN:
7K7
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Now: $5.71
Was: $9.51

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Description

Matched, Tested & Guaranteed Vacuum Tubes

All tubes are guaranteed to be 100% as described or your money back. We are known for our excellent customer service! All tubes have been tested for mutual transconductance, shorts, leaks, gas and noise on one of our calibrated Hickok TV-7 tube testers.

Any pair or quad described as matched means that the tubes will have the same exact construction and will test within a close range of each other for Mutual Transconductance. The last matching criteria is by date codes, which we do match when possible.

Actual Brand: Sylvania
Printed Brand: Sylvania
Type: 7K7
Number of Tubes: Date Code Matched Pair
Plate Construction: Black Smooth
Getter Construction: Top
Country: USA
Visible Date Codes: 7-52 G7E (both)
Lettering Condition: Good
Box Included: 1 Box-Original
Tests NOS: Yes
Actual NOS (Some Tubes Test NOS but have a few hours on them): Yes
Notes: Chrome Dome
Mutual Transconductance (Gm) Test Data: 56/52/51 & 41/54/50 where the minimum good value is 25/40/40 and the New Old Stock (NOS) value is 41/50/50 or 100%+ of what a new tube should test

 


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