Smith & Wesson Sigma Electronic Ear Muffs 24dB Grey
The Smith & Wesson Sigma Electronic Ear Muffs deliver 24dB noise reduction with smart audio processing that keeps you connected on the range. These electronic shooting ear muffs amplify ambient sound and range commands at safe levels while instantly compressing dangerous noise—so you hear your spotter or instructor clearly without sacrificing hearing protection. Whether you're running drills at an indoor range, shooting outdoors with a group, or training at a tactical course, the Sigma balances safety and situational awareness in one compact package.
The key to these muffs' functionality is the digital compression circuit, which activates when noise exceeds 85dB and responds in just 0.02 seconds to block hazardous sound spikes—gunshots, for example—before they reach your ears. Dual microphones feed stereo amplification, so directional cues and speech remain crisp and natural. Adjustable volume control lets you dial in the amplification to your preference, and the adjustable cushioned ear cups ensure a comfortable seal during extended sessions. The folding design with padded headband packs down small, making these a practical choice for range bags and travel.
Built to the rugged standards you'd expect from Smith & Wesson, the Sigma electronic ear muffs run on two AAA batteries (not included), giving you reliable protection without wires or complicated charging routines. If you spend time at the range with others or need to stay aware of your surroundings while protecting your hearing, these combine the best of both worlds.
Key Features
- 24dB Noise Reduction Rating (NRR) for reliable hearing protection
- Digital sound compression activates above 85dB with 0.02-second response time
- Stereo amplification clarifies range commands and ambient communication
- Dual microphones for directional audio awareness
- Adjustable volume control to suit your preference
- Adjustable cushioned ear cups for a custom fit
- Folding compact design with padded headband for portability
- Battery-powered operation (2 AAA batteries required—not included)
Specifications
| Brand | Smith & Wesson |
| Product Name | Sigma Electronic Ear Muffs |
| Color | Grey |
| Noise Reduction Rating (NRR) | 24dB |
| Noise Activation Threshold | 85dB |
| Compression Response Time | 0.02 seconds |
| Microphones | Dual |
| Audio Configuration | Stereo |
| Ear Cup Design | Adjustable cushioned |
| Headband Design | Folding with padding |
| Power Source | 2 AAA batteries (not included) |
| Design Type | Compact folding |
Frequently Asked Questions
What does the 24dB NRR rating mean?
NRR (Noise Reduction Rating) of 24dB means these muffs reduce loud noise by 24 decibels when properly fitted. This level of protection is effective for shooting ranges, where gunshots and caliber reports demand serious hearing defense.
How do the electronic features work—will they let me hear my shooting partner?
Yes. The dual microphones and stereo amplification pick up ambient sound and range commands at safe levels, so you hear conversation and instructions clearly. The digital compression circuit only kicks in when noise exceeds 85dB, blocking dangerous impulses like gunshots while leaving normal speech and background sound intact.
What batteries do these require?
The Sigma electronic ear muffs use two AAA batteries to power the amplification and compression circuits. Batteries are not included with purchase.
Can I adjust the fit and volume?
Yes. The cushioned ear cups are adjustable to fit different head sizes and shapes, and the volume control lets you set amplification to your comfort level. The padded, folding headband also adapts to individual fit.

