8 RCA 6S4 6S4A Vacuum Tubes NOS NIB Lot Of Eight Symphonie 1 These tubes have great bass

These tubes have great bass and sparkling highs and Pete Ham's voice is warm and clear as a bell

They have horse shoe getters

a mesh plate

They tested 50/46 and 52/45 where minimum (65%) is 40/45 and 100% is 62/69

dark-gray plates and a bottom dimpled-sheet getter

8 RCA 6S4 6S4A Vacuum Tubes NOS NIB Lot Of Eight Symphonie 1 These tubes have great bassThis lot of eight new old stock, new in box RCA 6S4A tubes tested to spec on our Paul Hart calibrated TV7 U. Seven are 6S4As and one is a 6S4, 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