(!!!) (BEST OVERALL PAIR) 6SF5GT Tungsol NOS 1946 (1.1ma and 1.3ma)

1 pair) 6SF5GT Tungsol NOS 1946

1 tube) 1.1ma Gm=1600

1 tube) 1.3ma Gm=1700

(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