(!!) (Pair) 6S4A GE NOS 1969-1970 (24.0ma and 25.5ma)
$ 19.99
1 pair) 6S4A GE NOS
1 tube) 25.5ma Gm=4700 (1970) (MC)
1 tube) 24.0ma Gm=4400 (1969) (FZ)
Matched on Amplitrex
Vplate=250V
Vgrid=-8V
Good Ma range 20-25ma
Good Gm range 4000-4500
(the 6S4A features high plate current at relatively low plate voltages and is capable
of withstanding high pulse voltages)(Vfil=6.3V @ 600ma)
MAX Ratings: Vplate=550V, Iplate=30ma, Pout=8.5 watts
Typical Operation:
Vplate=250V, Vgrid=-8V, Iplate=24ma, Mu=16.5, Gm=4500, Rplate=3700 ohms
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