- Toronto, Ontario, Canada
- Jun 22nd
MATCH PAIR 5755 Tube Raytheon JAN NOS WE 420A Dual Triode Amp 1974 Date Code Black Plates Preamp Tube. The Western Electric 420A was the prototype for the 5755. Base Noval, B9A Filament Vf 6.3 Volts / If: 0.36 Ampere / -: Indirect / Description Dual triode, high-stability, low-microphonic, intended for balanced DC amplifiers or computer applications.