Raytheon 40KG6 Vacuum Tube NOS NIB Reprocessed They are microphonic and are

They are microphonic and are fine in the preamp stage of my MP-301 and other gentle environments

I am playing them as I write in my Sound Craftsmen SC-2 mono-block amplifiers with Neil Young's "Harvest" and they sound outstanding

They have shoulder / ST / Coke-bottle bottles and dimpled-sheet getters

60 and 82 where 40 is minimum

They have 280 739

Raytheon 40KG6 Vacuum Tube NOS NIB Reprocessed They are microphonic and areThis new old stock, new in box Raytheon 40KG6 tube 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