4 Hytron 50L6 50L6GT Vacuum Tubes Gray Glass Lot Of Four Industrial Grade These four US-made 12SC7 tubes

These four US-made 12SC7 tubes tested as follows on our Paul Hart-calibrated TV7/U:

This lot of three Sylvania-MANUFACTURED number 19 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box RCA 1AC5 tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

They are dead quiet when the CD player is paused (I have no preamp) and have excellent frequency response

new in box Hytron 19BG6G tubes tested to spec on our Paul Hart-calibrated TV7/U

4 Hytron 50L6 50L6GT Vacuum Tubes Gray Glass Lot Of Four Industrial Grade These four US-made 12SC7 tubesThis lot of four Hytron coated glass 50L6GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 59, 62, 65 and 79 where minimum (65%) is 45. 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. 1. MOST