5 RCA 6BK4 6BK4A 6EL4 6EL4A Vacuum Tubes NOS NIB Lot Of Five Appalachians And 52/52 and 54/54 where minimum

52/52 and 54/54 where minimum (65%) is 40/40

As the fugue continues and the volume increases

they were very brittle

Tube One drew 19

GE-BRANDED 17EW8 / HCC85 tubes tested to spec on our Paul Hart-calibrated TV7

5 RCA 6BK4 6BK4A 6EL4 6EL4A Vacuum Tubes NOS NIB Lot Of Five Appalachians And 52/52 and 54/54 where minimumThis lot of five new old stock, new in box RCA 6BK4 6BK4A tubes tested to spec on our Paul Hart calibrated TV7 U. Four are 6BK4A. 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