Heater Voltage:
Uf: ............................................... 14 V
If: ................................................. 6 A

Static Parameters:
Ua: ................................................. 1500 V
Ug: ................................................ -57 V
Ia: ................................................ 170 mA
μ: ................................................. 16
Ri: ................................................. 1900 Ω
S: ................................................... 8.5 mA/V

Maximum Ratings:
Maximum Anode Voltage: ........................... 3000 V
Maximum Anode Current: .......................... 350 mA
Maximum Anode Dissipation: ..................... 180 W
Maximum Grid Current: .......................... 75 mA
Anode Voltage at 4.5 MHz: ...................... 1000 V

Inter-Electrode Capacitance:
Grid-Anode Capacitance: ............................. 18.8 pF
Grid-Heater Capacitance: .......................... 14.9 pF
Anode-Heater Capacitance: ..................... 8.6 pF

Class A Audio Amplification:
Anode Voltage........................... 1500 V           1250 V 
Grid Voltage................................. -57 V             -40 V 
Anode Curren............................ 170 mA           200 mA 
Anode Dissipation.................... 120 W            120 W 
Load Impedance........................ 5000 Ω           3000 Ω 

Distortion-Free Output............... 35 W           30 W