3 CBS 6K6 6K6GT Vacuum Tubes Valves Lot Of Three Lot Of Five This matched pair of Sylvania

This matched pair of Sylvania gray glass 7C5 tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volt for shorts

not included) and they sound excellent

This new old stock-testing matched pair of RCA 1625 / VT-136 output triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Sylvania 1X2 tubes tested to spec on our Paul Hart-calibrated TV7/U

This hardcover book -- and its dust jacket -- is in very good condition

3 CBS 6K6 6K6GT Vacuum Tubes Valves Lot Of Three Lot Of Five This matched pair of SylvaniaThese three CBS 6K6GT tubes were tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of 36 volts for shorts, gas, plate current and transconductance. There were no shorts or gas. Tube One measured 1380 micromhos and drew 10. 6 milliamps' plate current. Tubes Two and Three measured 1230 16. 7 and 1830 20. 2, respectively. New nominal is within one standard deviation of 1900. And they sounded fine in our Mini Mite 2013 WE HAVE SCORES OF