(!) 6189=12AU7WA GE black plates “”U”” getter NOS 1950”s rebranded Dumont 1978 (9.8/10.1ma) 1-2% section balance Title: 6189 GE

1 low noise tube) 6189=12AU7WA GE black plates “”U”” getter NOS 1950”s rebranded Dumont 1978

9.8ma Gm=2100

10.1ma Gm=2100

12AU7 subsititute

5814A=12AU7 GE is also recommended