Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filament NOS NIB 6N1P 3230 3230 As a survivor of Communist

As a survivor of Communist East Germany

All three sections of this Siemens EBF89 / 6DC8 tube were tested on our Paul Hart-calibrated TV7/U for shorts

68/62 and 70/60

Tubes Two through Seven tested 40/38

They have AC and BM date codes

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filament NOS NIB 6N1P 3230 3230 As a survivor of CommunistThis new old stock, new in box matched pair of GE 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured an outstanding 92 93 for Tube One and 94 93 for Tube Two where minimum (65%) is 50 50 and 100% is 77 77. They have additional filaments across the top tube for an enhanced light show; side O getters; copper support rods; a round and square hole