Matched Pair National Union NU 6F6GT JANCNU6F6GT Milspec Vacuum Tubes Valves Duodecar T26 This new old stock-testing matched

This new old stock-testing matched pair of Sylvania 6V6GT output tubes was tested on our Maxi-Matcher 2 for shorts

These tubes have black plates with lots of crosshatching

new in box Sylvania 25W4GT tubes tested to spec on our Paul Hart-calibrated TV7/U

This Dutch Amperex ECC83 / 12AX7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

I played it in my Bottlehead Crack and it sounds outstanding -- dead quiet when the CD player is paused with excellent frequency response

Matched Pair National Union NU 6F6GT JANCNU6F6GT Milspec Vacuum Tubes Valves Duodecar T26 This new old stock-testing matchedThis matched pair of National Union milspec output tubes was tested on Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 68 while Tube Two measured 69 where minimum (65%) is 50 and 100% is. These are beautiful tubes! Both have LR batch codes. 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