5 General Electric GE 6SF7 Vacuum Tubes Lot Of Five Type Sextal T18 It is dead quiet when

It is dead quiet when the preamp is muted and has excellent frequency response and dynamics

This matched pair of Sylvania black plate 12BY7 / 12BY7A tubes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Sylvania 2A4G tube tested to spec

new in box Sylvania 6LU8 tube tested to spec on our Paul Hart-calibrated TV7/U

5 General Electric GE 6SF7 Vacuum Tubes Lot Of Five Type Sextal T18 It is dead quiet whenThese five GE 6SF7 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They tested as follows: 56 32, 66 35, 74 55, 77 52 and 82 48 where minimum (65%) is 50 40. 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 QUESTIONS.