Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Milspec Large Logo EIA Factory Codes: GE etched

EIA Factory Codes: GE etched dots and 188-5 for Tube Two

new in box (for Tube Two) matched pair of Tung-Sol-MANUFACTURED 6SD7GT pentodes was tested on our Paul Hart-calibrated TV7 for shorts

Tube Two measured 10

for shorts

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Milspec Large Logo EIA Factory Codes: GE etchedThis 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