Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support Rods NOS NIB Billig Tube One: Tube Two:

Tube One: Tube Two:

They have dimpled

53 and 54 where minimum (65%) is 40 and 100% is 62

I am listening to this LP now and it sounds quite good

Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support Rods NOS NIB Billig Tube One: Tube Two:This new old stock, new in box, nicely matched pair of General Electric 12AU7 ECC82 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 73 75 while Tube Two measured 75 76 where minimum (65%) is 56 56 and 100% is 87 87. These tubes have narrow 19 MM plates, each with two rectangular holes; O getters; copper support rods and excellent flashing. I have played them