@jacksimonton
Ordinary (passive) ear muffs and plugs are simply a foam type material that deaden the sound - effectively too if you buy class 5 gear not budget gear
Electronic earmuffs (and some plugs) have microphones, with the ability to slightly amplify ordinary conversations so you can hear them with muffs on, and special circuitry that switches “off” any loud noises.
I’ve just switched from the usual passive to electronic. Very happy
Note the previous comments that a foam type plug inside electronic muffs is also possible for loud environmental noises
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