Home / 274B Vacuum Tube Replaces 5U4G 5Z3P 5R4 5AR4 GZ34 5Z4P HiFi Audio Tube Amplifier DIY Matching(4pcs Matched Quad)
  • 274B Vacuum Tube Replaces 5U4G 5Z3P 5R4 5AR4 GZ34 5Z4P HiFi Audio Tube Amplifier DIY Matching(4pcs Matched Quad)
  • 274B Vacuum Tube Replaces 5U4G 5Z3P 5R4 5AR4 GZ34 5Z4P HiFi Audio Tube Amplifier DIY Matching(4pcs Matched Quad)
  • 274B Vacuum Tube Replaces 5U4G 5Z3P 5R4 5AR4 GZ34 5Z4P HiFi Audio Tube Amplifier DIY Matching(4pcs Matched Quad)
  • 274B Vacuum Tube Replaces 5U4G 5Z3P 5R4 5AR4 GZ34 5Z4P HiFi Audio Tube Amplifier DIY Matching(4pcs Matched Quad)
  • 274B Vacuum Tube Replaces 5U4G 5Z3P 5R4 5AR4 GZ34 5Z4P HiFi Audio Tube Amplifier DIY Matching(4pcs Matched Quad)

274B Vacuum Tube Replaces 5U4G 5Z3P 5R4 5AR4 GZ34 5Z4P HiFi Audio Tube Amplifier DIY Matching(4pcs Matched Quad)

Preamps
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  • Detail

    Preamps
    Filament Heating
    Voltage......5V
    If...2.5A
    Final Rating
    Peak anode reverse voltage: 1550V
    Peak anode current......750mA
    Recommended working status
    Anode power supply voltage 2×500V
    Impedance per arm 75
    Load impedance 2000
    Filter capacitor 4F
    Rectification current 230mA

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