Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes NOS-Testing 17GW6 Octal T11 It was made in Japan

It was made in Japan

These three US-made milspec VR-150 / VT-139 / 0D3A tubes tested to spec in our Hickok 800

This GE 30MB6 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box US-made 12BR7 tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair General Electric GE 6SJ7 6J8P Vacuum Tubes NOS-Testing 17GW6 Octal T11 It was made in JapanThis new old stock testing, 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 64 for Tube One and 68 for Tube Two tubes where minimum (65%) is 40. They have NU 188 5 and 3 09 188 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