3 Westinghouse 12AU7 12AU7A ECC82 Black Plate Vacuum Tubes Lot Of Three Steel Plate NOS NIB " and "Little Bell

" and "Little Bell

This Amperite 115NO30 relay tube tested to spec on our Hickok 800

Tube One measured 30 while Tube Two measured 32 where minimum (65%) is 22

two Hytrons and one Sylvania

3 Westinghouse 12AU7 12AU7A ECC82 Black Plate Vacuum Tubes Lot Of Three Steel Plate NOS NIB " and "Little BellThis trio of Westinghouse black plate 12AU7A ECC82 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 50 58, 52 60 and 67 58, respectively where minimum (65%) is 56 56 and 100% is 86 86 I have played them in my Radio Craftsmen RC 2 monoblocks (with adapters, not included). They are dead quiet when the preamp is muted and have excellent frequency