Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes bumpus new in box Italian Sylvania

new in box Italian Sylvania 12SN7GTA dual triode was tested on our Hickok 600A for shorts

Tube One: 54/68

new in box Cunningham 35/51 tube tested to spec on our Paul Hart-calibrated TV7/U

STOLEN AND LOST

new in box National Union 7Y4 tubes in this lot

Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes bumpus new in box Italian SylvaniaThis nearly perfectly matched pair of GE 6SJ7s was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 46 for Tube One and 48 for Tube Two where minimum (65%) is 40. They have 1 43 188 5 and 3 52 188 5 date provenance codes, respectively. I am playing them as I write in my Musical Paradise MP 301 MK3 and they sound excellent. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.