Amperex 9ED4 Vacuum Tube NOS NIB

Amperex 9ED4 Vacuum Tube NOS NIBThis new old stock, new in box Amperex 9ED4 tube tested to spec on our Paul Hart calibrated TV7 U. 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 TO $250

These six new old stock

new in box Sylvania 6AQ7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box US-made 7X7 / XXFM tubes in this lot

6 milliamps' plate current while Tube Two drew 27

They tested 50/38

WE CANNOT TEST FOR CATASTROPHIC FAILURE

This amp was designed to use 6SN7s and I do not recommend using 12SN7s

This lot of six GE 6AC7s was tested on our Paul Hart-calibrated TV7/U for shorts

new in box 12SC7s tested to spec on our Paul Hart-calibrated TV7/U

perfectly-matched pair of RCA black plate

smooth mica spacer and outstanding flashing

72/76 and 92/90 where minimum (65%) is 50/50 and 100% is 77/77