Matched Quad CBS-Hytron 6CL6 Vacuum Tubes Valves Black Plate NOS NIB 4th Quarter BW46

Matched Quad CBS-Hytron 6CL6 Vacuum Tubes Valves Black Plate NOS NIB 4th Quarter BW46This new old stock, new in box matched quad of CBS Hytron 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 49, 50, 50 and 52 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

I am playing them in my Mini Mite 2013 as I write and they sound excellent

It has shiny gray rounded plates

new in box RCA 6DS4 nuvistor tube tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 48 for both where minimum (65%) is 36 and 100% is 55

1 milliamps

Transconductance measured 74/69 where minimum (65%) is 50/50

excellent flashing and well-secured bases and bottles that are nice and tight

CRUEL AND DRACONIAN GERMAN PACKAGING REGULATIONS -- AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM -- WE NO LONGER SHIP TO GERMAN ADDRESSES FROM JUNE 1

It has a diamond in its base with a 135 code

For sale is one new old stock

These four Philco engraved base number / type 27 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

These matched pair of engraved-base