RCA 6AC5 6AC5GT 6AC5GT/G Vacuum Tube Valve NOS NIB New York Times new in box US-made 6KU8

new in box US-made 6KU8 tubes tested to spec on our Paul Hart-calibrated TV7/U

but I would step it up to an 8 or so as this sound striping recording is truly cutting edge

I have played it in my Musical Paradise 301 MK 3 with an adapter (not included) as a 6SJ7 substitute and it sounds excellent -- airy with excellent dynamics and signal bandwidth

52 and 53 where minimum (65%) is 30 and 100% is 46

One of our best-sounding vintage albums

RCA 6AC5 6AC5GT 6AC5GT/G Vacuum Tube Valve NOS NIB New York Times new in box US-made 6KU8This new old stock, new in box RCA 6AC5GT G 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 PROTECTION COVERS ITEMS UP TO $250