Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filaments NOS NIB Hytron 6V6GT This GE 7716 tested to

This GE 7716 tested to spec on our Paul Hart-calibrated TV7/U

new in box GE 1G3GT / 1B3GT rectifier tubes tested to spec on our Paul Hart-calibrated TV7/U

5113 date codes and nice flashing

foil getters and cross-shaped-top and rectangular-bottom spacers

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filaments NOS NIB Hytron 6V6GT This GE 7716 tested toThis 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