JJ / Groove Tubes 12AX7 ECC83 7025 GTECC83 Vacuum Tube Vacuum Tube Valves It measured 41/41 where minimum

It measured 41/41 where minimum (65%) is 50/50 and 100% is 77/77

Its only flaw is an inscription on the first blank page

new in box matched pair of GE 6FQ7 / 6CG7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box National Union 14X7 -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

JJ / Groove Tubes 12AX7 ECC83 7025 GTECC83 Vacuum Tube Vacuum Tube Valves It measured 41/41 where minimumThis JJ MANUFACTURED, Groove Tubes LABELED 12AX7 7025 GTECC83S dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and it measured 36 46 where minimum (65%) is 32 32 and 100% is 49 49. It has excellent silkscreening; excellent flashing and an O getter. I am playing it in my Pro Ject Tube Box S phono preamplifier with an Ortofon X5 MC high output moving coil cartridge as I write and