Matched Pair General Electric GE Nickel Plate 6AU6 Vacuum Tubes Valves RCA 2728 almost-perfectly-matched pair of Ken-Rad 6SJ7s

almost-perfectly-matched pair of Ken-Rad 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

This book is in very good condition

If I can find -- or you provide -- tester settings

Transconductance measured 35

Matched Pair General Electric GE Nickel Plate 6AU6 Vacuum Tubes Valves RCA 2728 almost-perfectly-matched pair of Ken-Rad 6SJ7sThis matched pair of GE nickel plate 6AU6 tubes 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 58 and 100% is 89. These tubes have top, harp getters; nickel plates and excellent flashing. I am playing them in my Musical Paradise MC 3 single ended integrated amplifier (with adapters, not included) with