5814A=12AU7 Military top grade super quiet smooth tube from Raytheon!
The 5814A was an excellent tube that Audiophiles sought out for years. And for the price here to just get them out of the dust you will have a gem for next to nothing.
I have not seen many around these days they are a premium version of a 12AU7 from a top American tube producer in the 1950's and 1960's.
4 tubes = Quad matched = $40.00 [/size][/color]
