(!) 5687 Sylvania NOS rebranded RCA 1980 (37.0/42.5ma) (high Ma and Gm)
$ 24.99
1 low noise tube) 5687 Sylvania NOS rebranded RCA 1980
37ma Gm=12,800
42.5ma Gm=13,300
Recommended for
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth
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 5687 Sylvania NOS rebranded RCA 1980 (37.0/42.5ma) (high Ma and Gm) "Pin It")