1 low noise tube) 5687 Tungsol rebranded CBS black plates “”U”” getter NOS 1950”s
38ma Gm=12,000
48ma Gm=12,700
Good Ma range 30-35ma
Good Gm = 10,000-12,000
Recommended for
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth


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