(!!!!) (Best Sylvania Pair) JHS-5687WA Sylvania black plates NOS 1962 (34/40ma and 33/39ma)
$ 129.99
1 low noise pair) JHS-5687WA Sylvania black plates NOS 1962
1 tube) 34/40ma Gm=11,300/11,750
1 tube) 33/39ma Gm=11,350/12,300
Good Ma range 30-40ma
Good Gm range 10,000-12,000
Recommended for
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth
See more: vacuum tube
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