2 Sylvania Philco 6SN7 GTB Vacuum Tubes Very Strong & Balanced
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***** Tested on our proprietary tester , the E3444.
It's a Triplett 3444 that has been enhanced.
This tester uses regulated power sources for the bias, plate, & screen voltages, as well as modified operating & testing procedures.
Filament voltage is also controlled.
Tubes are tested in accordance with the manufacturer's specifications; measurements closely align with a laboratory tester built to rigorously measure vacuum tube characteristics.
Tubes can be accurately matched for gm & plate current at the manufacturer's specified test points or at other specified test points.
***** This tester was prepared by Mr. Paul Hart of Roswell, GA
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Industry Bogey transconductance = 2600|2600 Β΅mhos
Industry Bogey plate current = 9.0|9.0mA
Results =2650|2745Β΅mhos ~ 8.0|8.4mA
=2600|2740Β΅mhos ~ 7.4|7.9mA
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