Sovtek 12AX7 12AX7A ECC83 7025 Triple 3 Mica Vacuum Tube And Ronald Wolf They tested 53

They tested 53

They tested (from left to right) 36

(New US-made 6L6GCs typically test with plate current from the low 20s to mid 30s with transconductance from 2200 micromhos or so

new in box RCA 5AM8 tubes tested to spec on our Paul Hart-calibrated TV7/U

WE HAVE HAD A DOZEN LESS-THAN-FOUR-STAR REVIEWS OR HAVE LOST A CUSTOMER BECAUSE I REFUSED TO EITHER ISSUE A REFUND FOR A TUBE THAT WENT BAD AFTER IT HAD BEEN USED OR A BUYER KNEW NOTHING ABOUT TUBE REBRANDING AND CLAIMED THAT SOMETHING MADE

Sovtek 12AX7 12AX7A ECC83 7025 Triple 3 Mica Vacuum Tube And Ronald Wolf They tested 53This Sovtek 7025 (lower gain 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 it measured 40 44 where minimum (65%) is 32 32 and 100% is 49 49. It has outstanding silkscreening; a third mica spacer for increased vibration resistance and lowered microphonics; was made in China; has excellent flashing and a foil getter. I am playing it in one of my ArtSound single