Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes NOS NIB 81266-1 Stereo LP

Matched Pair General Electric GE 12SN7 12SN7GTA Vacuum Tubes NOS NIB 81266-1 Stereo LPThis new old stock, new in box matched pair of GE MANUFACTURED 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 82 87 for Tube One and 84 87 for Tube Two (Zenith LABELED, GE MANUFACTUREDwhere 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

25 and 26 where minimum (65%) is 21

44 and 48 where minimum (65%) is 30

Tube One (Unitron 5654-LABELED

Tube One measured 60/56 while Tube Two measured 61/58 where minimum (65%) is 50/50 and 100% is 77/77

presence and soundstaging

I just cleaned this LP set on my VPI 16

This tube has two spy holes per plate side

milspec Sylvania JHS-12AT7WA (12AT7 / ECC81) dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

This pair of Tung-Sol type 76 triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Add $20 for US dependencies and $50 for the rest of the world

The used Westinghouse 12D4 tested as Good on the English scale on our Hickok 800 and had no emissions drop with the filament at five rather than 6

black glass 6V6GT/G output tubes was tested on our Maxi-Matcher 2 for shorts