Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes NOS NIB Globe Pental The noise floor on this

The noise floor on this tester is -92dB/-92dB

Their readings are 54

Audio Power Output 50C5

Most loktals were made by Sylvania and these Philco-BRANDED 14X7s are not an exception

I am playing them in one of my RC-2 monoblocks with Super Furry Animals' "Radiator" and they sound great

Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes NOS NIB Globe Pental The noise floor on thisThis new old stock, new in box matched pair of GE 12SN7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 74 75 for Tube One and 75 76 for Tube Two where minimum (65%) is 50 50. They have gray, ladder plates; crenelated, round top mica spacers with an excised square and circle each, O getters; copper support rods; tall bases and RT 188 5 and KV 188