RCA 1AC5 Vacuum Tube NOS NIB 12Q7 Octal 12SL7 bogey: Minimum (65%) is

12SL7 bogey: Minimum (65%) is 32/32 and 100% is 49/49

I played them in my Alan Eaton single-ended 45 amplifier (as an "excellent" 6SN7 substitute according to Antique Electronic Supply's "Tube Substitution Guidebook") and they sound outstanding

It is dead quiet when the preamp is muted and has excellent frequency response and sound-staging

Tube One Transconductance: 45/45

This new in box JJ 6BQ5 was tested on our Maxi-Matcher with 325 volts on the plates and a bias of -14 volts for shorts

RCA 1AC5 Vacuum Tube NOS NIB 12Q7 Octal 12SL7 bogey: Minimum (65%) isThis new old stock, new in box RCA 1AC5 tube and another just like it tested to spec on our Paul Hart calibrated TV7 U. Etsy will indicate how many are available in this Dutch Auction. 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