Matched Quad General Electric GE 6CL6 Vacuum Tubes Black Plate 6HG8 NOS NIB It is dead quiet when

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

beefy black plates: side O getters

new in box GE 1L4 tubes tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of milspec/industrial GE 5814A / 12AU7 / ECC82 dual triodes was tested on our Hickok 800 for shorts

Matched Quad General Electric GE 6CL6 Vacuum Tubes Black Plate 6HG8 NOS NIB 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