Matched Quad Philips Miniwatt PCF80 9U8 Vacuum Tubes Brimar NOS NIB new in box milspec black

new in box milspec black plate GE 6Y6GT / JAN-CG-6Y6GT tubes both tested 56 on our Paul Hart-calibrated TV7/U where minimum (65%) is 40 and 100% is 62

These five GE 6BL8 tubes tested to spec on our Paul Hart-calibrated TV7/U

things have obviously improved

65 and 79 where minimum (65%) is 45

There are practically-no pops and ticks

Matched Quad Philips Miniwatt PCF80 9U8 Vacuum Tubes Brimar NOS NIB new in box milspec blackThis matched pair of Philips Miniwatt PCF80 9U8 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 80 66, 80 70, 80 70 and 82 70, respectively where minimum (65%) is 57 57. 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