Home / 274B Tube Replaces 274B/5Z3P/5AR4/5U4G Vacuum Tubes to Precisely Match amplifiers(2 pcs)
  • 274B Tube Replaces 274B/5Z3P/5AR4/5U4G Vacuum Tubes to Precisely Match amplifiers(2 pcs)
  • 274B Tube Replaces 274B/5Z3P/5AR4/5U4G Vacuum Tubes to Precisely Match amplifiers(2 pcs)
  • 274B Tube Replaces 274B/5Z3P/5AR4/5U4G Vacuum Tubes to Precisely Match amplifiers(2 pcs)

274B Tube Replaces 274B/5Z3P/5AR4/5U4G Vacuum Tubes to Precisely Match amplifiers(2 pcs)

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  • Detail

    Preamps
    A274B
    Filament Heating
    Voltage input....5V
    If ...............2A
    Restrict Rating
    Anode reverse voltage peak...............1550V
    Peak anode current.........750mA
    Recommended operating conditions
    Anode power supply voltage 2×500V
    Impedance per arm 75
    Load impedance 2000
    Filter capacitor 4F
    Rectification current 220mA

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