Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Milspec Large Logo for shorts

for shorts

This matched quad of new old stock-testing Sylvania 7B6 tubes tested 1033 micromhos for Tube One and 1050 for Tube Two on our Hickok 800

This pressing has very-light to light surface noise audible in quiet passages

gray ladder-plates

Transconductance measured 44 and 46 where minimum (65%) is 30 and 100% 46

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Milspec Large Logo for shortsThis matched pair of GE 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 56 55 for Tube One and 61 56 for Tube Two. (Minimum (65%) is 50 50.) They have horseshoe getters; copper support rods; great flashing and 56 39 188 20 and 56 09 188 20 date factory codes. I have played them in my Radio Craftsmen RC 2 monoblocks and they sound great. They