Telefunken Smooth Plate 12AX7 ECC83 Vacuum Tube OA3 Gebraucht new in box Sylvania 3Q5GT

new in box Sylvania 3Q5GT tube -- and another just like it -- tested to spec on Paul Hart-calibrated TV7/U

I am playing them in my Musical Paradise MC-3 single-ended integrated amplifier (with adapters

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

There is a shield between the triodes for reduced cross talk

new in box International 6LF6 / 6MH6 tube tested to spec on our Paul Hart-calibrated TV7/U

Telefunken Smooth Plate 12AX7 ECC83 Vacuum Tube OA3 Gebraucht new in box Sylvania 3Q5GTThis 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