Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes NOS-Testing 60-08063-64a 47 and 48 where minimum

47 and 48 where minimum (65%) is 30 and 100% is 72

They were cleaned on my VPI 16

This special edition DVD is still sealed

This matched pair of RCA Cunningham Radiotron Type 49 output tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair Sylvania 6AU6 6AU6A Vacuum Tubes NOS-Testing 60-08063-64a 47 and 48 where minimumThis new old stock testing matched pair of Sylvania 6AU6 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 82 for Tube One (6AU6A) and 84 (6AU6) for Tube Two where minimum (65%) is 58. These tubes have top, D getters; gray plates; copper support rods and excellent flashing. I am playing them in my Musical Paradise MC 3 single ended integrated amplifier (with