55
- First year: 1931
- Base: 6-Pin-Base U6A, old, USA (Codex=Ka)
- Filament: Vf 2.5 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC) /
- Identical to: 55 = UZ-55 = A255 = CV2537 = PH55 = 255
- Tube type: Double Diode-Triode Audio Frequency
Published by:
dido