Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes NOS NIB Globe Pental I have played it in

I have played it in my Bottlehead Crack headphone amplifier and it sounded outstanding

Their readings are 54

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

TUBES ARE GUARANTEED AS-DESCRIBED ON SHIPMENT

Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes NOS NIB Globe Pental I have played it inThis 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