Matched Pair Marshall 12AX7 ECC83 Triple Mica Vacuum Tubes Булата Окуджавы Из 3 milliamps and transconductance was

3 milliamps and transconductance was 2490 micromhos for Tube One

It was stored in a cool

They were Apex-matched

new in box GE 26HU5 tubes tested to spec on our on our Jackson 648

Matched Pair Marshall 12AX7 ECC83 Triple Mica Vacuum Tubes Булата Окуджавы Из 3 milliamps and transconductance wasThis matched pair of Marshall 12AX7 ECC83) dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: Tube One: 32 39 Tube Two: 34 42 Minimum (65%) is 32 32 and 100% is 49 49. These tubes have excellent flashing; steel plates; square, top, dimpled O getters and an additional mica spacer for lowered microphonics.. I am playing them in my ArtSound single ended