Ken-Rad 5V4 5V4G Vacuum Tube Black Plate Shoulder ST-Shape Rectifier 6L6 NOS-Testing The Zenith is hermetically-sealed and

The Zenith is hermetically-sealed and could not be tested

I am playing them in one my Radio Craftsmen RC2 mono blocks as I write and they sound super

28/27 and 33/26 where minimum (65%) is 18/18

new in box matched pair of RCA 6GU7 dual triodes was tested on our Jackson 648 Mutual Conductance tester for shorts

Ken-Rad 5V4 5V4G Vacuum Tube Black Plate Shoulder ST-Shape Rectifier 6L6 NOS-Testing The Zenith is hermetically-sealed andThis Ken Rad 5V4G rectifier tube was tested on our Paul Hart calibrated TV7 U. It measured 57 58 where minimum (65%) is 40 40 and 100% is 62 62. 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.