(!!!!) (Best Pair) 6JK6 Sylvania rebranded RCA NOS 1960's (9.5ma and 10ma)
$ 64.99
1 pair) 6JK6 Sylvania branded RCA NOS 1960's same date codes (CJ)
1 tube) 9.5ma Gm=14,500
1 tube) 10.0ma Gm=15,500
Good Ma range 8-11ma
Good Gm = 14,000-18,000
Marantz 10B Tuner
See more: vacuum tube
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 (Best Pair) 6JK6 Sylvania rebranded RCA NOS 1960's (9.5ma and 10ma) "Pin It")