Sophia Electric 845 MK3 Vacuum Tube Specification

Nominal operating conditions and parameters:

 

Filament voltage 10.0V
Nominal filament current 3.2A
Plate voltage 1250V
Grid voltage -200V
Plate current 80mA
Plate resistance 1.7 Kohms
Amplification factor 5.0
Load resistance 3.4 Kohms
Signal voltage(pk) 69.0V
Output Power 25W
'