Telefunken Smooth Plate 12AX7 ECC83 Vacuum Tube OA3 Gebraucht 2 milliamps' plate current where

2 milliamps' plate current where new / nominal is within one standard deviation of 1900

They measured 39

good flashing and an MX date code

new in box RCA 6T4 tubes tested to spec on our Paul Hart-calibrated TV7/U

Telefunken Smooth Plate 12AX7 ECC83 Vacuum Tube OA3 Gebraucht 2 milliamps' plate current whereThis Telefunken smooth plate 12AX7 ECC83 dual triode 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: It measured 38 36 where minimum (65%) is 32 32 and 100% is 49 49. It has excellent flashing and a chunky O getter. Its base has the requisite Telefunken diamond embossed with a 62 2 code. I am playing it in my Pro Ject Tube Box S phono preamplifier with an