Telefunken ECH81 Vacuum Tube NOS-Testing Мелодия Melodiya This lot of two National

This lot of two National Union type 85 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

It was dead quiet when the preamp was muted and had excellent frequency response

new in box US-made 6CM7 tubes tested to spec on our Paul Hart-calibrated TV7/U

double-side getters and and absolutely no flashing -- somewhat-disconcerting

6 dB / -82

Telefunken ECH81 Vacuum Tube NOS-Testing Мелодия Melodiya This lot of two NationalThis new old stock TESTING Telefunken ECH81 6AJ6 was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. It measured 75 79 where minimum (65%) is 50 50 and 100% is 77 77 and has the Telefunken diamond (<>) embossed in its base. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF