6 US-Made 6GX6 / 6GY6 Vacuum Tubes Valves NOS NIB Lot Of Six 6BS8 Nonal T22 Transconductance was 1240 for Tube

Transconductance was 1240 for Tube One and 1380 for Tube Two where new/nominal is within one standard deviation of 1900

This amp was designed to use 6SN7s and I do not recommend using 12SN7s

It was not an original recording

Minimum (65%) is 47 and 100% is within a half standard deviation of 72 or so

new in box Sylvania 12AV7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

6 US-Made 6GX6 / 6GY6 Vacuum Tubes Valves NOS NIB Lot Of Six 6BS8 Nonal T22 Transconductance was 1240 for TubeThese six US made 6GX6 6GY6 tubes tested were on our Paul Hart calibrated TV7 U. They measured 21. 21. 21, 24, 25 and 26 where minimum (65%) is 21. 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 YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100.