Coots,
The function of electronic ear muffs is frequently misunderstood. Typically they are a) STANDARD ear muffs which muffle sounds like other ear muffs combined with b) a microphone/speaker which amplifies external sounds IF those sounds are under a stated decibel level. They do NOT electronically muffle sounds. To obtain maximum sound reduction, buy ear muffs with the HIGHEST decibel rating (posted on package) which typically ranges from low 20's to low 30's.
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Good shooting and be safe.
LB
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