RCA etc. ONE (1) 6N5 Magic Eye Tuning AT1000 TESTED Vacuum Tube Dim 6AB5 Audio 1937-1964

This listing is for one (1) 6N5 Magic Eye Tuning 6AB5 vacuum tube in the straight-walled glass tube shape. It has a black bakelite 6-pin base, black or nickel plate, and bottom D getter. Labels in stock include RCA, GE, Sylvania, National Union. If you're looking for a particular brand, please message right as you order - we pack and ship quickly!

Magic eye indicator tubes are tested visually for a shadow that opens and closes and their luminosity is rated subjectively as BRIGHT, normal, or DIM. They are also tested for shorts, gas, and H-K leakage. All the tubes we list have passed these tests. Because the transconductance was not tightly controlled by the manufacturers, no attention is paid to this parameter during testing. In short, a bright tube is a great tube, and a dim tube is very cheap because you'd only want to use it in a dark room!