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(!!) (1 Pair) 6SF5 RCA metal can NOS 1960 era (1.0ma and 1.1ma)

(!!) (1 Pair) 6SF5 RCA metal can NOS 1960 era (1.0ma and 1.1ma)

$ 10.99

1 matched pair) 6SF5 RCA metal can NOS

1 tube) 1.0ma Gm=1700

1 tube) 1.1ma Gm=1700

- tubes plugged into octal sockets in picture

 

 

Good Ma = .9 - 1.0ma

Good Gm = 1400-1500

 

(6SF5=6F5 without top cap and 7B4)
(6SF5GT are used in Fi X 2A3/45 SET amp)
(6SF5GT have gain similar to a 12AX7)
(Vplate=240V, Vgrid=-1V, Mu=110, Gm=2120, Rplate=52Kohms, Pout=.48 watts)

- Masco MA-808
- Supro amp
- Fi 2A3

See more: vacuum tube
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