Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes NOS-Testing T05 new in box Sylvania 9JW8

new in box Sylvania 9JW8 tubes tested to spec on our Paul Hart-calibrated TV7/U

There were no shorts or gas and they measure as follows:

72 and 76 where minimum (65%) is 45

but followed the original score and was recorded in the latter 1950s

a clear top with red paint (indicating it is a selected

Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes NOS-Testing T05 new in box Sylvania 9JW8This new old stock testing, 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 62 for Tube One and 64 for Tube Two where minimum (65%) is 40. They have 4 48 188 5 and 5 43 188 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