Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filaments NOS NIB Hytron 6V6GT This East German pressing is

This East German pressing is pretty good

Tube Two measured 25

They measured 28/30

This new old stock-testing matched pair of Ken-Rad 6N7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

55 and 59 where minimum (65%) is 40

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filaments NOS NIB Hytron 6V6GT This East German pressing isThis 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 76 78 for Tube One and 77 82 for Tube Two where minimum (65%) is 50 50 and 100% is 77 77. They have additional filaments across the top of the tube for an enhanced light show; side O getters; copper support rods; a round and square hole in each