Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filament NOS NIB Records HS 11147 Transconductance measured 2000/1900 micromhos for

Transconductance measured 2000/1900 micromhos for Tube One and 2000/2000 micromhos for Tube Two

new in box RCA 13GF7 13GF7A tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Shield 6AS5 tube tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 74/74 while Tube Two measured 75/75 where minimum (65%) is 50/50 and 100% is 77/77

5-9 out of ten

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filament NOS NIB Records HS 11147 Transconductance measured 2000/1900 micromhos forThis new old stock, new in box matched pair of GE MANUFACTURED 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and transconductance measured as follows: Tube One: 79 72 (GE MANUFACTURED, Amperex LABELED) Tube Two: 82 76 Bogey: Minimum (65%) is 50 50; 100% is 77 77 Physical Characteristics: Bases: tall Bottles: medium height Date Codes: none and MY, respectively EIA