1 low noise tube) 5687 RCA black plates used/good 1961
33.0ma Gm=9400
33.5ma Gm=9800
Recommended for
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth
$9.00 $29.99
1 low noise tube) 5687 RCA black plates used/good 1961
33.0ma Gm=9400
33.5ma Gm=9800
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth
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