Matched Pair General Electric GE 6CL6 Vacuum Tubes Black Plate NOS-Testing VT107A Sixsnsevengt 6SL7s can sub for 6SN7s

6SL7s can sub for 6SN7s in some amps but I do not recommend experimenting as they have very-different bias voltages

new in box GE 25BK5 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box matched pair of GE 6SJ7s was tested on our Paul Hart-calibrated TV7 for shorts

I sold my quarter track deck years ago and cannot give you a report on how this tape sounds

These are ultra-low-noise

Matched Pair General Electric GE 6CL6 Vacuum Tubes Black Plate NOS-Testing VT107A Sixsnsevengt 6SL7s can sub for 6SN7sThis new old stock testing matched pair of GE black plate 6CL6 tubes were tested on our Paul Hart calibrated TV7 7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 52 and 53 where minimum (65%) is 30. 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