Sonotone 6AF4 6AF4A Vacuum Tube NOS NIB Tall Base 6364 6660 new in box 12SC7s tested

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

new in box Sylvania-MANUFACTURED

new in box RCA 6DA4 tube tested to spec on our Paul Hart-calibrated TV7/U

I have played them in my Radio Craftsmen RC-2 monoblocks and they are dead quiet when the SACD player is paused and have excellent frequency response

Their readings are 44

Sonotone 6AF4 6AF4A Vacuum Tube NOS NIB Tall Base 6364 6660 new in box 12SC7s testedThis new old stock, new in box West German manufactured Sonotone 6AF4 6AF4A 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