(!!) (Best Pair) 13EM7 Sylvania NOS 1960 era (1.4/56ma and 1.8/48ma)
$ 29.99
1 pair) 13EM7 Sylvania NOS 1960 era
1 tube) 1.4ma Gm=1600 and 56ma Gm=8000
1 tube) 1.8ma Gm=1800 and 48ma Gm=7700
Good mA triode #1 = 1.2-1.4ma
Good Gm triode #1 =1400-1600
Good mA triode #2 = 30-40ma
Good Gm triode #2 = 5500-7000
See more: vacuum tube
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 (Best Pair) 13EM7 Sylvania NOS 1960 era (1.4/56ma and 1.8/48ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_a48082ff-d48d-4a11-ad85-9109c3553f04.jpg?v=1745367711){kind=link}
 (Best Pair) 13EM7 Sylvania NOS 1960 era (1.4/56ma and 1.8/48ma) "Pin It")