Matched Pair General Electric GE 6AU6 6AU6A Vacuum Tubes Valves

Matched Pair General Electric GE 6AU6 6AU6A Vacuum Tubes ValvesThis perfectly matched pair of General Electric 6AU6A tubes was tested on our Hickok 800 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 1950 micromhos for both. (New US made 6AU6s typically test from 2300 micromhos or so.) 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

This matched pair of milspec Hytron 5654 / 6AK5 / JHY-6AK5 tubes was tested on our Paul Hart-calibrated TV7/U

presence and soundstaging

new in box US-made 5FG7 tubes tested to spec on our Paul Hart-calibrated TV7/U

54 and 64 where minimum (65%) is 50

It is the tube on the right and is shown running with the United single that is also for sale separately

What makes this funny is that a major US defense contractor likely committed a number of felonies by smuggling communist Soviet tubes into the US at the height of the Cold War

where minimum (65%) is 60

new in box GE CDS / CDX 500 watt projection bulb and its box are in pristine shape

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

new in box Amperex World 1BC2 / 1BC2A tubes tested to spec on our TV7

These three new old stock-testing US-made 1H4G tubes were tested on our Paul Hart-calibrated TV7/U for shorts

new in box GE 6AC7 tubes tested to spec on our Paul Hart-calibrated TV7/U