General Electric GE 12AT7 ECC81 6679 Vacuum Tube Premium Matched Pair 6DQ5 Tube Two measured 2930/21

Tube Two measured 2930/21

3 milliamps' plate current while Tube Two drew 23

new in box matched pair of RCA 6GU7 dual triodes was tested on our Jackson 648 Mutual Conductance tester for shorts

This matched pair of RCA 6FQ7 / 6CG7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

they can put out as much as 2A3s and fell into disfavor because of socket supply issues

General Electric GE 12AT7 ECC81 6679 Vacuum Tube Premium Matched Pair 6DQ5 Tube Two measured 2930/21This industrial grade GE 6679 12AT7 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 69 65 where minimum (65%) is 50 50 and 100% is 77 77. It has gray, wing plates; a top, O getter and excellent flashing. I am playing them in my Bottlehead Crack headphone amplifier as I write. The Bottlehead calls for a 12AU7 which is a pretty different tube. That said, it has no