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(!!!!!) (Best Pair #2) 5687WA and 5687WB GE black plates like new 1970's (39/38.5ma and 37/41ma) (Highest Ma and Gm)
(!!!!!) (Best Pair #2) 5687WA and 5687WB GE black plates like new 1970's (39/38.5ma and 37/41ma) (Highest Ma and Gm)
$ 79.99
1 low noise tube) 5687WA and 5687WB GE black plates - same build - test like new 1970's in white boxes
1 tube) 39.0/38.5ma Gm=11,400/12,000
1 tube) 37.0/41.0ma Gm=11,150/11,650
Good Ma range 30-35ma
Recommended for
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth
See more: vacuum tube
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 (Best Pair #2) 5687WA and 5687WB GE black plates like new 1970's (39/38.5ma and 37/41ma) (Highest Ma and Gm) "Pin It")
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