4 RCA 12AZ7 12AZ7A Vacuum Tubes NOS NIB Lot Of Four 5899 JHS-5899 Transconductance measured 46 for Tube

Transconductance measured 46 for Tube One and 48 for Tube Two where minimum (65%) is 40

It was made in the USA

but non-strident highs

copious flashing and mica snubbers for increased rigidity for lowered microphonics

4 RCA 12AZ7 12AZ7A Vacuum Tubes NOS NIB Lot Of Four 5899 JHS-5899 Transconductance measured 46 for TubeThis lot of four new old stock, new in box RCA 12AZ7 12AZ7A tubes tested to spec on our Paul Hart calibrated TV7 U. One is a 12AZ7 while the other three are 12AZ7As. 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