Tested NOS at 98/98gm (56 is minimum) using a professionally calibrated TV7U tube tester.
Item Tag: GE
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12AU7 5814A GE JAN USAF ECC82 VINTAGE AUDIO TUBE NOS NIB (1963) #12B88
The 5814 is a direct, ruggedized military variant of the 12AU7 and is fully interchangeable. Triode #1 – Plate Current = 10.67mA Rp = 7433 Gm = 2273 Mu = 16.9. Triode #2 – Plate Current = 10.56mA Rp = 7532 Gm = 2249 Mu = 16.9.
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GE JG-5814A. High Grade 12AU7. Triple Mica. Matched. Test Strong And Balanced.
Testing is done with Superior TW-11 Tester. This tester is a cathode emission tester. The results are useful for relative matching of same type tubes, and also a good/bad result. Tubes are checked for filament continuity. The results should be taken as a general indication of tube health. I am happy to combine shipping on multiple purchases. For USA customers, duty and brokerage is prepaid to ensure quick hassle free delivery.
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LOT 5 EACH GE 5814WA TRIPLE MICA (12AU7/6189) TUBES TESTED VERY STRONG TV7/D
LOT OF 5 EACH 5814WA GE TRIPLE MICA TUBES. ALL TESTED STRONG ON TV7D TESTER. ALL 59-47 DATE CODE.
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GE – General Electric 5814A Vacuum Tube — CS1
Tube Number: 5814A. Tube was tested on an Amplitrex AT1000. Quantity: 1 Tube.