3 RCA 12AU7 12AU7A ECC82 Black Plate Vacuum Tubes Lot Of Three JANCTL6098 Milspec new in box Tung-Sol 6AK6

new in box Tung-Sol 6AK6 tubes tested to spec on our Paul Hart-calibrated TV7/U

It measured 83/84 where minimum (65%) is 50/50 and 100% is 77/77

These tubes have engraved bottles

I am playing it in my Pro-Ject Tube Box S phono pre-preamplifier (tube on right) with John Mayall’s seminal "The Blues Alone" album

new in box Magnavox 6BZ6 tubes tested to spec on our Paul Hart-calibrated TV7/U

3 RCA 12AU7 12AU7A ECC82 Black Plate Vacuum Tubes Lot Of Three JANCTL6098 Milspec new in box Tung-Sol 6AK6This trio of RCA 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 60 79, 66 58 and 82 72, respectively where minimum (65%) is 56 56 and 100% is 86 86. They have matte, black 17MM plates; slanted D getters; steel support rods and excellent flashing. I have played them in my Radio Craftsmen RC 2 monoblocks (with adapters, not