Quote:
Originally Posted by Bill of Rights  I also have but don't use a set of electronic ear plugs. I thought them redundant as well as risky- wasn't sure they really shut off the sound in time to avoid damage. |
As I understand electronic plugs/muffs, the default state is "block all sound". The "electronic" comes in when it amplifies quieter sounds like talking. So even if the battery is dead, they'll still work like standard plugs/muffs.
In other words, they don't electronically cancel loud noises, they amplify quiet ones.