Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods NOS-Testing March 30 2025 312 026 and 113 EIA/date

312 026 and 113 EIA/date codes

5 volts with adapters (not included) and they sound tremendous even though they are running with a lowered filament voltage

Micanol bases

It is dead quiet when the preamp is muted and have excellent frequency response and dynamics

solid saucer getters and excellent top and side flashing

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods NOS-Testing March 30 2025 312 026 and 113 EIA/dateThis new old stock TESTING matched pair of GE 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 82 79 for Tube One and 80 81 for Tube Two where minimum (65%) is 50 50 and 100% is 77 77. They have side, harp getters; copper support rods; great flashing and 56 26 188 4 and 58 13 188 5 date factory codes, respectively. I have played them in my