6 US-Made 6AU8 6AU8A Vacuum Tubes NOS NIB Lot Of Six

6 US-Made 6AU8 6AU8A Vacuum Tubes NOS NIB Lot Of SixThese six new old stock, new in box US made 6AU8 6AU8A tubes 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

They test 46/50

This GE-MANUFACTURED

new in box Sylvania milspec JAN-CHS-6D4 tube tested to spec on our Paul Hart-calibrated TV7/U

The pressing itself is very quiet and that is discerable between pieces

top harp/lyre getters and black anode radiators for improved cooling and longer tube life

new in box GE 4BQ7A tubes tested to spec on our Paul Hart-calibrated TV7/U

Kentucky plant and has a 188-5 EIA/provenance code and as a 4-52 date code

This new old stock-testing matched pair of Ken-Rad black and silver bottle type / number 38 tubes tested 58 and 62 on our Paul Hart-calibrated TV7/U where minimum (65%) is 26 and 100% is 40

I am playing it in one of my Radio Craftsmen RC-2 amplifiers as I write with the Mobile Fidelity version of Pink Floyd's "Meddle" and it sounds great

new in box RCA 0C3 regulator tube tested to spec on our Paul Hart-calibrated TV7/U

One of our best-sounding vintage albums

black glass 6V6GT/G output tubes was tested on our Maxi-Matcher 2 for shorts