Home / 300B Tube Replaces 300BN 300BT PX300B WE300B 7300B 4300B HiFi Audio Tube Amplifier(4pcs White seat)
  • 300B Tube Replaces 300BN 300BT PX300B WE300B 7300B 4300B HiFi Audio Tube Amplifier(4pcs White seat)
  • 300B Tube Replaces 300BN 300BT PX300B WE300B 7300B 4300B HiFi Audio Tube Amplifier(4pcs White seat)
  • 300B Tube Replaces 300BN 300BT PX300B WE300B 7300B 4300B HiFi Audio Tube Amplifier(4pcs White seat)
  • 300B Tube Replaces 300BN 300BT PX300B WE300B 7300B 4300B HiFi Audio Tube Amplifier(4pcs White seat)
  • 300B Tube Replaces 300BN 300BT PX300B WE300B 7300B 4300B HiFi Audio Tube Amplifier(4pcs White seat)

300B Tube Replaces 300BN 300BT PX300B WE300B 7300B 4300B HiFi Audio Tube Amplifier(4pcs White seat)

Preamps
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  • Detail

    Preamps
    Direct-heated cathode medium power triode, used for class A1 amplification. In audio amplifiers, it is suitable for applications requiring an output power of 10W.
    Extreme Rating
    Anode voltage 480V
    Anode power dissipation 40W
    Cathode current
    Self-biased 100 mA
    Fixed bias 70 mA
    Interelectrode capacitance
    Input capacity 9PF
    Output capacitor 4.3PF
    Inter-circuit capacitance 15PF
    Static parameters
    Ua300V
    -Ug 60V
    Current 60 mA
    Voltage range 5.5 mA/V
    Ri0.7 K
    3.85
    Water output 6.6W
    Recommended parameters
    Ugg
    Ua Uf (AC) Uf (DC) I a
    Voltage --~ Voltage----Voltage---- mA
    200--33--29.5--77
    200--45--41.5--20
    250--46--42.6 --74
    250--57--53.6 --22
    300--60--56.5--68
    300--70--66.5--23
    400--86--82.5 --68
    400--98--94.5 --19
    Limit Parameters
    450--100--96.5--60

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