Sennheiser Communications

A smarter way to safeguard your hearing

This built-in and unique technology, safely compresses potentially dangerous sound levels, whereas traditional systems simply clip high noise peaks. ActiveGard™ allows headset wearers to work, relaxed in the knowledge that their headsets are equipped with this outstanding technology to help ensure their safety.


Before an undesirable incoming signal even reaches your ears, the ActiveGard™ technology acts as an automatic control to instantly lower the volume of unacceptably loud, high, or deep sounds. Using sophisticated electrical circuits; the energy of the acoustic burst is actually removed, not just reduced. At the same time, the sound itself is compressed without distorting it.  When the volume reaches acceptable standards again, it is allowed to return to the original, comfortable level. The automatic guard then returns to surveillance mode.