Matched Pair General Electric GE Red Label 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA Camden Tube One (missing centering pin

Tube One (missing centering pin / keyway): Tube Two:

Transconductance measured 64 for Tube One and 68 for Tube Two tubes where minimum (65%) is 40

PLEASE PERUSE THE FOLLOWING:

This GE 6G11 tube tested to spec on our Paul Hart-calibrated TV7/U

These are ultra-low-noise

Matched Pair General Electric GE Red Label 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods RCA Camden Tube One (missing centering pinThis matched pair of GE Red Label 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 70 66 for Tube One and 71 70 for Tube Two. (Minimum (65%) is 50 50.) They have O getters; tall bases; copper support rods; a round and square hole in each mica spacer; great flashing and 64 09 188 5 and 63 13 188 5 date factory codes, respectively. I have played