(!!!!) (Recommended Pair 1970's) 417A Western Electric NOS 1973-1977 (27ma and 31.2ma)
By Tube World
$ 329.99
1 pair) 417A Western Electric NOS original boxes 1970's
1 tube) 27.0ma Gm=24,300 (1977)
1 tube) 31.2ma Gm=26,300 (1973)
Matched on Amplitrex
Good Ma range NOS 20-30ma
Good Gm range NOS 20,000 - 30,000
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See more: vacuum tube
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 (Recommended Pair 1970's) 417A Western Electric NOS 1973-1977 (27ma and 31.2ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_024f2b7e-246d-42bc-939a-7c550634df49.jpg?v=1702227508){kind=link}
 (Recommended Pair 1970's) 417A Western Electric NOS 1973-1977 (27ma and 31.2ma) "Pin It")