12 US-Made 6KY8 6KY8A Vacuum Tubes NOS NIB Lot Of Twelve July 18 2022 It measured a perfectly-balanced 75/75

It measured a perfectly-balanced 75/75 where minimum (65%) is 50/50

I have played it in my Bottlehead Crack headphone amplifier

This pressing has lightly-moderate surface noise audible in quiet passages and barely-audible in voice-level passages

but not in guitar amps and other environments with loud noise and/or excessive vibration

12 US-Made 6KY8 6KY8A Vacuum Tubes NOS NIB Lot Of Twelve July 18 2022 It measured a perfectly-balanced 75/75This lot of twelve new old stock, new in box US made 6KY8A 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