Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes Nagrania XL 0257 Tube One measured 60 while

Tube One measured 60 while Tube Two measured 70 where minimum (65%) is 46 and 100% is 71

48 and 51 where minimum (65%) is 32 and 100% is 49

This new old stock-TESTING National Union 807 output tube was tested on our Maxi-Matcher 2 for shorts

This is a wonderfully-cheesy LP

new in box Amperex 9ED4 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes Nagrania XL 0257 Tube One measured 60 whileThis 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.