A number of customers have asked us about new EF86’s. This a  famous high gain audio pentode from the 1950’s and 1960’s. There are a lot of  used EF86’s on well known auction sites that are unboxed with big prices. My own experience  is that many of these original valves are well used and not worth the money. The alternative  has been to buy  NOS original boxed units but these are vintage and command high