Sylvania 40KD6 Vacuum Tube Of The Beast This matched pair of milspec/industrial

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

Two are labeled "Philco

It measured an outstanding and nearly-perfectly-balanced 92/93 where minimum (65%) is 50/50 and 100% is 77/77

5 record cleaner and played on my Rega Planar Three

I will test it

Sylvania 40KD6 Vacuum Tube Of The Beast This matched pair of milspec/industrialThis Sylvania 40KD6 tube tested 71 on our Paul Hart calibrated TV7 U where minimum is 54 and new is 100. 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 ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP