Depending on your activity (target shooting, clay pigeon shooting, hunting) and the location (shooting range, lowlands, forest, etc.), you can adjust the amplification volume. So you need to be able to hear your environment, there is no point in over-amplifying it. Please note:
-when outdoors, pay attention to the wind, which will create a blast effect in the microphones.
-do not use the ear defenders when the amplification system is switched off: they will not protect you efficiently.