Hearing protectors are often employed in noisy environments, such as factories, airports etc. Such hearing protectors consist of two muffs or hoods manufactured from hard material, for example plastic, which sealingly surround the ears of the wearer and which are connected to one another by the intermediary of a headband. Interiorly in the muffs or hoods, there is provided as a rule a porous noise absorbent agent. The employment of hearing protectors has increased at the same rate as awareness has grown of the risks of loss of hearing caused by noise, and developments are constantly being made of the hearing protectors which occur on the market in order to make them more user-friendly, so that the desired level of use is encouraged. The majority of hearing protectors utilize so-called passive damping, i.E. A damping that takes place with the aid of the material included in the muffs or hoods and noise absorbent agents disposed in them. A remaining problem in the employment of hearing protectors is that there is often a need to listen to requisite sound, such as instructions, or other conversations from a person in the vicinity, at the same time as the intention is to impede as much background noise as possible. Hearing protectors occur on the market which, in response to the level, damp noise above a certain sound level. In this level-dependent damping, the hearing protector allows the passage of all sound up to a pre-determined sound level, with the aid of a microphone, an amplifier and a loudspeaker disposed inside the hearing muff or hood. When this level is exceeded, the electronics are shut off and all sound is damped by passive damping.