Matched Pair RCA 12SN7 12SN7GTA Vacuum Tubes Black Plate NOS NIB

Matched Pair RCA 12SN7 12SN7GTA Vacuum Tubes Black Plate NOS NIBThis new old stock, new in box matched pair of RCA 12SN7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 76 76 and Tube Two measured 79 77 where minimum (65%) is 50 50. They have short bases; tall bottles; D getters; steel support rods; DB and CV batch codes, respectively, and their top mica spacers have two X patterns incised into them. I am playing them

This new old stock-testing matched trio of Sylvania 6N6G tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This is a well-preserved LP

new in box GE 6CN7 tubes tested to spec on our Paul Hart-calibrated TV7/U

These tubes appear unused as there is no evidence they have been touched by a soldering iron

This new old stock-testing

This pressing has very-light to light surface noise audible in quiet passages

(New US-made 6V6s typically test with plate current from the mid-teens to mid 30s with transconductance from 2300 micromhos or so

THERE WILL BE NO REPLACEMENTS FOR LOST PACKAGES OR TUBES THAT FAIL

new in box milspec Tung-Sol JTL-5702WB tubes tested to spec on our Paul Hart-calibrated TV7/U

mesh plate number / type 77 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

INTRUSIVE AND DRACONIAN GERMAN PACKAGING REGULATIONS -- AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM -- WE WILL LONGER SHIP TO GERMAN ADDRESSES

I cannot guarantee that the copper-colored finish is rose gold