Description
Tube Type / Number: 6SK7GT
Actual Brand*: CEI
Printed Brand: CEI
Quantity of Tubes: Matched Quad (4)
Plate Construction: Silver Smooth
Getter Construction: Top []
Country of Manufacture: Italy
Visible Date Codes:
Lettering Condition: 100 Percent
Year Made:
Number of Mica Spacers: 1
Mica Shape: Sawblade
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - ALL Original
Notes: Metal Base [4]
Gm Test Results: 79 & 79 & 79 & 80
Minimum Good Value: 48
NOS Test Value: 79
Life Calculation: 100+% (where 65% = fail)
Tests as NOS?: Yes
True NOS?*: Yes
** Please note, many tubes will test NOS but will actually have a few hours of use on them. A truly NOS tube will have excellent getter flashing condition, no dirt/grime, usually in the original box, and no filament deposits. If a tube is listed as "tests NOS" but is listed as "not True NOS" please expect the tube to have a small amount of use *
All tubes have been tested using only the best tube testers. We have a large fleet of tube testers, and every single one of them has been calibrated within the last year by industry experts. We mainly use the Hickok TV-7D/U, but occasionally we may use a Hickok 539, 533A, or 600A.