2 RCA 7B6 Vacuum Tubes Valves NOS NIB Lot Of Two International This lot of seven US-made

This lot of seven US-made 12B4A tubes were tested on our Paul Hart-calibrated TV7/U for shorts

anode radiators for cooler operation (and longer tube life) and hot-stamped/engraved bases

(New US-made 7408s typically test with plate current from the mid-teens to mid-30s with transconductance from 2300 micromhos or so

It took two adapters but was worth it as they sounded fine in my Mini 2013

2 RCA 7B6 Vacuum Tubes Valves NOS NIB Lot Of Two International This lot of seven US-madeThese two new old stock, new in box RCA 7B6 tubes 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