Matched, Tested & Guaranteed Vacuum Tubes
All tubes are guaranteed to be 100% as described or your money back. All tubes have been tested for mutual transconductance, shorts, leaks, gas and noise on my calibrated Hickok TV-7/U.
Any pair of 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 criteria is date codes, which I do match when possible.
Actual Brand: Amperex
Printed Brand: Amperex
Type: 6DJ8 [ECC88]
Number of Tubes: Single
Plate Construction: Gray
Getter Construction: Large Top O Foil
Visible Date Codes: GAC ?9F3
Lettering Condition: Completely Rubbed Off
Box Included: None
Tests NOS: No
Actual NOS (Some Tubes Test NOS but have a few hours on them): No
Mutual Transconductance (Gm) Test Data: 9,500/11,000 where the minimum good value is 7150/7150 and the New Old Stock (NOS) value is 11,000/11,000 or 86/105% of what a new tube should test
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