Matched Pair Sylvania 6AU6 Vacuum Tubes Valves NOS-Testing Swiss-Made These ten new old stock

These ten new old stock

nonetheless

Baldwin-BRANDED and SELECTED 12AU7A / ECC82 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

It will also be also -- as time becomes available -- on our Paul Hart-calibrated TV7/U for a more-familiar point of reference for most

Matched Pair Sylvania 6AU6 Vacuum Tubes Valves NOS-Testing Swiss-Made These ten new old stockThis matched pair of Sylvania 6AU6 tubes was tested on our Hickok 800 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 2100 micromhos for Tube One and 2175 for Tube Two. (New US made 6AU6s typically test within one standard deviation of 2300 micromhos; minimum (65%) is 1495.) 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"