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(!!!!) (Best Sound for the money) 6550 Tungsol branded RCA NOS and used/like new vented gray plate 1965 and 1974 (130ma and 134.5ma) (close Gm)
(!!!!) (Best Sound for the money) 6550 Tungsol branded RCA NOS and used/like new vented gray plate 1965 and 1974 (130ma and 134.5ma) (close Gm)
$ 499.99
1 pair) 6550 Tungsol branded RCA NOS and used/like new vented gray plate - same build - in white boxes
1 tube) 130ma Gm=10,700 (1965) NOS
1 tube) 134.5ma Gm=10,750 (1974) used/like new
Good NOS Ma range 125-140ma
Good NOS Gm range = 10,000 - 11,000
Recommended for
- ARC VS 110 and other ARC amps
- Audio Research Reference 3 line-stage power supply
- Rogue 90
- VTL amps; MB300, 450, many others
- Gibson guitar amp
- McIntosh 275
- Beard P100 MKII 1984
- Cayin A-88T
See more: vacuum tube
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 (Best Sound for the money) 6550 Tungsol branded RCA NOS and used/like new vented gray plate 1965 and 1974 (130ma and 134.5ma) (close Gm) "Pin It")