Matched Pair Sylvania 12AV7 Vacuum Tubes Valves Black Plate NOS NIB Stereo C5RS-7694-1 a side-D getter

a side-D getter

(New US-made 6550s typically test with plate current from the low 20s to mid 40s with transconductance from 3500 micromhos or so

Tube Two measured 1750/23

new in box CBS 6AK6 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Japanese Magnavox 10DE7 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Sylvania 12AV7 Vacuum Tubes Valves Black Plate NOS NIB Stereo C5RS-7694-1 a side-D getterThis matched pair of new old stock, new in box Sylvania black plate 12AV7 dual triodes was tested on our Maxi Matcher for shorts, gas and gain. There were no shorts or gas. Gain (Mu) measured 31. 4 31. 9 for Tube One and 33. 4 31. 3 for Tube Two. (New 12AZ7s typically test within a standard deviations of 33). 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