Matched Quad General Electric GE 6CL6 Vacuum Tubes Black Plate Musical Paradise 301 It is dead quiet when

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

This lot of four European PCL805 tubes was tested on our Paul Hart-calibrated TV7/U

This matched pair GE 6AX4GT rectifier tubes was tested on our Paul Hart-calibrated TV7/U for shorts

microphonics and transconductance

new in box RCA 6JU8A tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Quad General Electric GE 6CL6 Vacuum Tubes Black Plate Musical Paradise 301 It is dead quiet whenThis matched quad of GE black plate 6CL6 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured (From left to right): 41, 42, 42 and 44 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