Amperex 9ED4 Vacuum Tube NOS NIB May 29 2025 These nine National Union number

These nine National Union number / type 27 tubes tested as good on our Paul Hart-calibrated TV7/U

This Ken-Rad 1C77G tube tested to spec on our Paul Hart-calibrated TV7/U

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

This RCA Radiotron number / type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

Amperex 9ED4 Vacuum Tube NOS NIB May 29 2025 These nine National Union numberThis 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