3 RCA 12AU7 12AU7A ECC82 Black Plate Vacuum Tubes Lot Of Three JANCTL6098 Milspec new in box Magnavox 6BZ6

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

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

new in box GE 8156 tube tested to spec on our Paul Hart-calibrated TV7/U

This hardcover book is in fair condition

3 RCA 12AU7 12AU7A ECC82 Black Plate Vacuum Tubes Lot Of Three JANCTL6098 Milspec new in box Magnavox 6BZ6This 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