Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes EP Dutton New York The diodes measured 78 and

The diodes measured 78 and 74

I just cleaned this four LP set on my VPI 16

This GE 7716 tested to spec on our Paul Hart-calibrated TV7/U

new in box Sylvania 6BL8 / ECF80 tube tested to spec on our Paul Hart-calibrated TV7/U

had excellent frequency response and was very quiet

Matched Pair RCA 6FQ7 / 6CG7 Vacuum Tubes EP Dutton New York The diodes measured 78 andThis matched pair of RCA 6FQ7 6CG7 dual triodes was tested on our TV7 U for shorts, gas and transconductance. There were no shorts or gas and their readings are as follows: Tube One measured 61 60 while Tube Two measured 63 65 where minimum (65%) is 50 50 and 100% is 77 77. These tubes have steel support rods; ladder plates; side D getters and excellent flashing. As I write, I am playing them with adapters (not included) in my Alan Eaton single ended