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Matched Pair Sylvania 12AV7 Vacuum Tubes Valves Black Plate NOS NIB Stereo C5RS-7694-1 top mica spacer
Matched Pair Sylvania 12AV7 Vacuum Tubes Valves Black Plate NOS NIB Stereo C5RS-7694-1 top mica spacer
$13.32
Description
top mica spacer
(New US-made 6550s typically test with plate current from the low 20s to mid 40s with transconductance from 3500 micromhos or so
an anode radiator for cooler operation and longer tube life and a banded-cross top mica spacer
IN NEARLY 7000 SALES
J-slot Cinch TS102U03 / SOS-6 tube shields fit 12AX7-size tubes nicely
Matched Pair Sylvania 12AV7 Vacuum Tubes Valves Black Plate NOS NIB Stereo C5RS-7694-1 top mica spacerThis 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
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