Matched Pair Sylvania 7N7 Vacuum Tubes August 4 2022 I am playing them as
$24.50
Description
I am playing them as I write in my Musical Paradise MP-301 MK3 and they sound excellent
8 milliamps' plate current / 2170 micromhos
but also because if it is a brand other than RCA
It measured 57/60 where minimum (65%) is 40/40 and 100% is 62/62
The Bottlehead calls for a 12AU7 which is a pretty-different tube
Matched Pair Sylvania 7N7 Vacuum Tubes August 4 2022 I am playing them asThis 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
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