James, 23dB Noise Reduction Rating. The E-Max amplifies sounds below 85 decibels, which amplifies normal communication, range commands, and environmental sounds. Above 85 decibels, the microphones shut off for a split second to protect the shooter’s hearing. Two microphones – one in each cup – give the user true stereo sound and allow the user to identify the directional source of a sound. Full details here >>>> caldwellshooting.com/safety-gear/hearing-protection/e-max/e-max-low-pro-elec.-muff-wshooting-glasses/487309.html

James, this Elec/Muff has a 23dB Noise Reduction Rating. Video review here : youtube.com/watch?v=6MUqTCvp5jc

23 db, pretty cool it amplifies sounds below 85db and above 85 decibels, the microphones shut off for a split second to protect the shooter's hearing. I might have to try a pair.

23db noise reduction