Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods NOS NIB Et Volodia Poliakof new in box US-made 2BN4

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

" They have black and silver glass

winged plates with one rectangular hole per plate

is very quiet and has only the occasional pop and tick

I am playing them in my Mini 2013 as I write and they sound excellent

Matched Pair General Electric GE 6SN7 6SN7GTA Vacuum Tubes Copper Support Rods NOS NIB Et Volodia Poliakof new in box US-made 2BN4This 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