6 US-Made 6GX6 / 6GY6 Vacuum Tubes Valves NOS NIB Lot Of Six 6BS8 Nonal T22 It is dead quiet when

It is dead quiet when the preamp is muted and has excellent frequency response and sound-staging

This RCA Radiotron number / type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

they are sold as-is with no returns

These are World War Two-vintage tubes sourced from third parties to fulfill the second party's military contract

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

6 US-Made 6GX6 / 6GY6 Vacuum Tubes Valves NOS NIB Lot Of Six 6BS8 Nonal T22 It is dead quiet whenThese 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.