Matched Pair Tung-Sol 6AK5 6J1 6J2 Vacuum Tubes NOS NIB JTL5702WB Milspec I would rated it a

I would rated it a 5

1-25 188-5 and 1-04 188-5 date/provenance codes

25K center-tapped interstage transformers is sold as-is as I have no means of testing it

Tube One measured 61/60 while Tube Two measured 68/68 where minimum (65%) is 50/50 and 100% is 77/77

This Sylvania 6SF7 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Tung-Sol 6AK5 6J1 6J2 Vacuum Tubes NOS NIB JTL5702WB Milspec I would rated it aThis new old stock, new in box matched pair of Tung Sol 6AK5 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One (Philco LABELED, Tung Sol MANUFACTURED) measured 30 while Tube Two measured 31 where minimum (65%) is 22 and 100% is 34. I am playing them now in my Mini 2013 as I write and they sound excellent. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.