The combination of the effects of the screen grid and the grid damping resistor often allow the use of this design without neutralization. The screen found in tetrodes and pentodes, greatly increases the valve's gain by reducing the effect of anode voltage on anode current.
This design can frequently be employed without neutralization due to the interaction between the effects of the screen grid and the grid damping resistor. The screen used in tetrodes and pentodes significantly enhances the valve's gain by reducing the impact of anode voltage on anode current.