Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods NOS NIB Et Volodia Poliakof winged plates with one rectangular

winged plates with one rectangular hole per plate

massive plates and an EG MHT date code

new in box US-made 2BN4 / 2BN4A tubes tested to spec on our Paul Hart-calibrated TV7/U

63 and 68 where minimum (65%) is 46

Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods NOS NIB Et Volodia Poliakof winged plates with one rectangularThis new old stock, new in box (for Tube Two) matched pair of GE MANUFACTURED 6SN7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 77 80 for Tube One and 82 81 for Tube Two where minimum (65%) is 50 50. They have tall bases; side horseshoe getters; ; copper support rods; outstanding flashing and both have 4 43 188 5 date provenance code. WE HAVE