The U.S. military uses a layered system of hearing protection that ranges from simple foam earplugs to advanced electronic headsets with built-in communication systems. What a service member wears depends entirely on the environment: a sailor on an aircraft carrier flight deck, an infantryman firing a rifle, and a helicopter pilot all face different noise threats and need different solutions. Military standards require that noise at the ear stays below 140 decibels peak pressure for impulse noise (like gunfire) and below 85 decibels for sustained noise exposure.
Earplugs: The Most Basic Layer
Foam disposable earplugs are the most widely issued hearing protection across all branches. The Department of Defense maintains an approved list of specific products that have passed military testing, and units can only purchase from that list. Common approved models include the E-A-R foam plug, Howard Leight Max, Moldex Purafit, and 3M 1110. These are cheap, single-use, and effective when inserted correctly.
Non-disposable options include pre-molded plugs like the single-flange V-51R and triple-flange models from North Safety. These last longer and are reusable, but they require proper sizing to seal well. The military also issues the Combat Arms Earplug, a dual-ended plug designed to let service members switch between steady-state noise protection and a setting that allows normal conversation while still blocking the sharp impulse of gunfire. This design has been standard issue for years, though earlier versions were the subject of a major lawsuit over claims they could loosen and fail to seal properly.
The real-world challenge with earplugs is that people don’t wear them correctly. A Navy survey of aircraft carrier flight deck crews found that 47% reported never wearing earplugs under their cranial helmets, even though double protection (earplugs plus earmuffs) is required in that environment. Among those who did wear them, only 7% inserted them deeply enough in both ears to get the full expected 22 decibels of noise reduction. Shallow insertion dropped actual protection to as little as 0 to 6 decibels, essentially no meaningful protection at all.
Earmuffs and Cranial Helmets
Over-ear (circumaural) muffs are the second layer. The approved list for Navy personnel alone includes more than 30 models, from the Peltor H10A and David Clark E310 to the MSA Economuff and various models from Howard Leight, Bilsom, and Wilson. These passive muffs simply block sound through padding and a sealed cup over each ear.
On aircraft carrier flight decks, crews wear a cranial helmet with built-in earmuffs. When properly fitted and maintained, this cranial provides roughly 21 decibels of noise attenuation on its own. Combined with correctly inserted earplugs, the double protection setup delivers about 30 decibels of total attenuation. That matters when you’re standing near jet engines producing sustained noise well above 140 decibels.
Specialized flight deck muffs like the Safety Direct USN-86 are designed specifically for that environment. Pilots, meanwhile, wear aviation helmets such as the Gentex HGU-55/P or SPH-4B (used in rotary-wing aircraft), which integrate hearing protection directly into the helmet shell along with communication equipment.
Electronic Tactical Headsets
Modern combat units increasingly rely on electronic headsets that do two things at once: block harmful noise and amplify quiet sounds like speech and footsteps. This is the category that has evolved the most in recent years.
The 3M Peltor ComTac series is one of the most widely fielded systems. The current ComTac VI model offers noise reduction ratings between 20 and 23 decibels depending on configuration. Its electronic “hear-through” microphones pick up ambient sound and pipe it into the ear cups at safe levels, so a soldier can carry on a conversation or hear commands without removing protection. When a loud impulse like a gunshot occurs, the electronics compress the sound instantaneously to protect the ear.
These headsets also connect to radio systems, letting users transmit and receive communications without lifting a cup. For infantry and special operations forces, this combination of protection, situational awareness, and comms integration in a single device has made electronic headsets the standard for dismounted operations.
Helmet-Mounted Systems
The modern high-cut combat helmet, like the Ops-Core FAST or the Army’s IHPS, is designed with accessory rails on the sides. Electronic headsets mount directly to these rails rather than sitting on top of the helmet or being worn underneath it. The Ops-Core AMP headset, for example, uses a rail mount kit that attaches to the rear portion of the helmet’s ARC rails, leaving the top section free for lights, cameras, or other gear.
A single-point gimbal on each ear cup allows 360-degree adjustment, which helps the cup seal against different head and ear shapes and maintains that seal as the wearer moves. When not in use, the ear cups rotate to the side or rear of the helmet, keeping the profile low and out of the way. This kind of modularity is a significant shift from older systems where hearing protection was either built permanently into the helmet or worn as a completely separate piece of equipment.
Bone Conduction and Advanced Comms
Some units, particularly special operations forces, use systems that bypass the ear canal entirely for communication. The INVISIO X5 headset paired with the X50 control unit uses bone conduction technology, transmitting voice through vibrations in the skull rather than through speakers in the ear cups. This allows clear communication even in extreme noise, underwater, or while wearing a gas mask.
The INVISIO system also provides certified hearing protection and guards against acoustic shocks, the sudden high-intensity impulse noises that cause tinnitus and permanent hearing loss. The U.S. Army has placed orders for INVISIO systems, and they’re used by special operations and security units in multiple countries. The digital processing in these systems can distinguish between dangerous noise levels and sounds a user needs to hear, making them some of the most sophisticated hearing protection available.
Why the Noise Threat Is So Extreme
To understand why the military takes hearing protection so seriously, consider the numbers. A standard M16 rifle produces a peak of about 157 decibels at the shooter’s ear. A 105mm towed howitzer reaches 183 decibels. For context, permanent hearing damage can occur from a single unprotected exposure above 140 decibels. The military standard (MIL-STD-1474E) requires that peak sound pressure at any occupied position stays below 140 decibels, whether through engineering controls, distance, or hearing protection. In practice, especially for weapons systems, hearing protection is often the only barrier between service members and damage.
Hearing loss and tinnitus are the two most common service-connected disabilities among veterans, which is why the DoD restricts purchases to tested and approved devices. The gap between what protection is available and what protection people actually get comes down to fit, wear compliance, and training. A $0.50 foam earplug inserted properly outperforms a $500 electronic headset worn loosely. The military’s ongoing challenge isn’t developing better technology. It’s getting every service member to use what they have correctly, every time.