Matched Pair Sylvania 7N7 Vacuum Tubes August 4 2022 8 milliamps' plate current /

8 milliamps' plate current / 2170 micromhos

but also because if it is a brand other than RCA

This new old stock-TESTING milspec Sylvania JAN-CHS-5933 / 5933 / 807W / FU7 output tube was tested on our Maxi-Matcher 2 for shorts

The Bottlehead calls for a 12AU7 which is a pretty-different tube

Matched Pair Sylvania 7N7 Vacuum Tubes August 4 2022 8 milliamps' plate current /This matched pair of Sylvania 7N7 dual triodes 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: 71 69 and; Tube Two: 71 74 (Minimum (65%) is 50 50 and 100% is 77 77. They have black wing plates, beautiful flashing and round bottom mica spacers. I have played them (with adapters, not included) in my AC heated Radio Craftsmen RC 2 mono block amplifiers