(!!!) (Best RCA single #2) 5687 RCA bronze plates NOS 1976 (31.5/34ma)
$ 59.99
1 low noise tube) 5687 RCA bronze plates NOS 1976
1 section) 31,5ma Gm=11,000
1 section) 34.0ma Gm=12,000
Good NOS 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 RCA single #2) 5687 RCA bronze plates NOS 1976 (31.5/34ma) "Pin It")