Matched Pair Raytheon 6AK5 6J1 6J2 Black Plate Vacuum October 31 2024 new in box Sylvania 14C5

new in box Sylvania 14C5 tubes tested to spec on our Paul Hart-calibrated TV7/U

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This nearly-perfectly-matched pair of GE 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

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(New US 6L6GCs typically test with plate current from the low 20s to mid 30s with transconductance from 2200 micromhos or so

Matched Pair Raytheon 6AK5 6J1 6J2 Black Plate Vacuum October 31 2024 new in box Sylvania 14C5This matched pair of Raytheon 6AK5 black plate tubes was tested on our Paul Hart calibrated TV7 U. They measured 29 and 31 where minimum (65%) is 22 and 100% is 40. I am playing them in my Mini Mite 2013 as I write and they sound excellent. 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 SEE WHAT YOU NEED OR HAVE ANY