(!) (Good Value Pair) 6S4A RCA USA black plate NOS 1960's - 1970's (19ma and 18.8ma)
$ 12.99
1 pair) 6S4A RCA black plate NOS
1 tube) 19ma Gm=3900 ("O" getter 1970's
1 tube) 18.8ma Gm=3800 ("U" getter 1960's) on left
Good mA = 20+
Good Gm = 4000+
(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)
- Woo Audio GES Electrostatic headphone amp
See more: vacuum tube
Share:
 (Good Value Pair) 6S4A RCA USA black plate NOS 1960's - 1970's (19ma and 18.8ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_ff9b9015-e45a-4dd8-9c98-af9d90bfeb38.jpg?v=1762761980){kind=link}
 (Good Value Pair) 6S4A RCA USA black plate NOS 1960's - 1970's (19ma and 18.8ma) "Pin It")