Matched Pair Sylvania 6SJ7 6J8P Vacuum Tubes Valves NOS-Testing Atmospheric Horel This album does not appear

This album does not appear to be in its original jacket

They measured 76/82

These nine new old stock

ZENITH-LABELED) measured 74/76 while Tube Two measured 76/78 where minimum (65%) is 50/50 and 100% is 77/77

Matched Pair Sylvania 6SJ7 6J8P Vacuum Tubes Valves NOS-Testing Atmospheric Horel This album does not appearThis new old stock TESTING matched pair of Sylvania 6SJ7s was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 57 for Tube One and 58 for Tube Two where minimum (65%) is 40. They have HG YCN and EJ date codes, respectively. I am playing them as I write in my Musical Paradise MP 301 MK3 and they sound excellent. Tube Two is a bit microphonic and it is therefore