RCA 3A3 3A3C Vacuum Tube NOS NIB 12K7 12K7GT NOS NIB One tube has far more

One tube has far more visible getter flashing because of the getter's orientation deeper in the bottle

These four US-made new old stock

It sounds excellent with only the very-occasional pop and tick in the quiet musical passages

12AT7s are notorious for their unmatched triodes and their deviation from nominal parameters

RCA 3A3 3A3C Vacuum Tube NOS NIB 12K7 12K7GT NOS NIB One tube has far moreThis new old stock, new in box RCA 3A3C 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 IN