JJ Electronic ECC832/12DW7 Vacuum Tubes

COMBINATED DOUBLE TRIODE
ECC832 is 12DW7 pre-amplifying double triode. It combines 12AX7 and 12AU7, where the 12AX7 is used as 1st stage and the 12AU7 as 2nd stage.

Base: NOVAL
Uf = 6,3 or 12,6 V
If = 300 or 150 mA

Typical  characteristic:
system I. system II.
(pin 6,7,8) (pin 1,2,3)
Ua = 250 V 250 V
Ug = -2 V -8,5 V
Ia = 1,2 mA 10,5 mA
S = 1,6 mA/V 2,2 mA/V
Ri = 62,5 kΩ 7,7 kΩ
μ = 100 17