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274B Vacuum Tube Upgrade 274B 5Z3P 5U4G 5AR4 GZ34 U77 HiFi Audio Tube Amplifier Matching(2pcs Matched Pair)
274B Vacuum Tube Upgrade 274B 5Z3P 5U4G 5AR4 GZ34 U77 HiFi Audio Tube Amplifier Matching(2pcs Matched Pair)
Preamps
Quantity
-
Detail
Preamps
Heater
Voltage
If 2.5A
Maximum Ratings
Anode reverse peak voltage 1550V
Anode peak 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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