Matched Pair Sylvania 6DE4 Coin Base Vacuum Tube Rectifiers NOS-Testing Presents The Stereo new in box Sylvania 12AV7

new in box Sylvania 12AV7 dual triodes tested on our Paul Hart-calibrated TV7/U

new in box Raytheon 1H5GT tube tested to spec on our Paul Hart-calibrated TV7/U

This trio of RCA gray glass 12BY7 / 12BY7A tubes was tested on our Paul Hart-calibrated TV7 for shorts

I am playing them with adapters (not included) in my Alan Eaton single-ended 45 amplifier and they sound great

Matched Pair Sylvania 6DE4 Coin Base Vacuum Tube Rectifiers NOS-Testing Presents The Stereo new in box Sylvania 12AV7This matched pair of Sylvania 6DE4 rectifier tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. They measured 74 742 where minimum (65%) is 50 and 100% is 77. They have gray plates; coin bases; side O getters and rectangular top and bottom spacers. 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