4 Ken-Rad 50L6 50L6GT Vacuum Tubes Valves Black / Gray Glass Lot Of Four Matched Pair 6AX4 42 and 56 where minimum

42 and 56 where minimum (65%) is 40

This pressing has light surface noise audible in quiet passages and barely audible in voice-level passages

Transconductance measured 3900/4500 micromhos

new in box US-made 9AU7 tubes tested to spec on our Paul Hart-calibrated TV7/U

4 Ken-Rad 50L6 50L6GT Vacuum Tubes Valves Black / Gray Glass Lot Of Four Matched Pair 6AX4 42 and 56 where minimumThis lot of four Ken Rad 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 38, 58, 60 and 68 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