X400 series

Pressure limit indicator
■ Amplifier status indicator. When the voltage limit indicator lights up, it indicates that the compression protection circuit in the amplifier starts to act.
The input signal of the power amplifier is too large and should be reduced. It can be seen that the pressure limit indicator also reflects the volume
The amplitude of the signal controlled by the potentiometer.
Signal indicator
■ When the power amplifier has output, the signal indicator will flash, indicating that the power amplifier starts to output.
switch
■ Turn on and off the power amplifier, the power indicator lights up when turned on.