RCA
NOS NIB Date Matched Pair RCA USA 12SK7 Metal Vacuum Tube 12SK7 100%+
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- SKU:
- PS1498
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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.
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: RCA
Printed Brand: Cunningham
Type: 12SK7
Number of Tubes: Date Code Matched Pair
Plate Construction: Metal
Getter Construction: Metal
Country: USA
Visible Date Codes: 604 (both)
Lettering Condition: Good
Box Included: 2 Boxes-Original
Tests NOS: Yes
Actual NOS (Some Tubes Test NOS but have a few hours on them): Yes
Notes:
Mutual Transconductance (Gm) Test Data: 79 & 82 where the minimum good value is 48 and the New Old Stock (NOS) value is 79 or 100%+ of what a new tube should test
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Printed Brand: Cunningham
Type: 12SK7
Number of Tubes: Date Code Matched Pair
Plate Construction: Metal
Getter Construction: Metal
Country: USA
Visible Date Codes: 604 (both)
Lettering Condition: Good
Box Included: 2 Boxes-Original
Tests NOS: Yes
Actual NOS (Some Tubes Test NOS but have a few hours on them): Yes
Notes:
Mutual Transconductance (Gm) Test Data: 79 & 82 where the minimum good value is 48 and the New Old Stock (NOS) value is 79 or 100%+ of what a new tube should test