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EP3 Sonic Defenders®

Filtered Flanged Earplugs

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Noise Reduction Rating 24dB (with filter caps inserted)
Color Black, Clear, Orange
Size S, M, L
Filter Yes
Stem Double Flanged
Radio Comm Compatible Yes
Included Lanyards Detachable
Features -


EP3-BK-LPR 084871315173
EP3-BK-MPR 084871315166
EP3-BK-MPR-BULK 084871315517
EP3-BK-SPR 084871315159
EP3-LPR 084871250610
EP3-LPR-BULK 084871250634
EP3-MPR 084871250603
EP3-MPR-BULK 084871250627
EP3-SPR 084871250641
EP3-SPR-BULK 084871310048
EP4-BK-LPR 084871315203
EP3-OR-SPR 084871318815

For detailed specifications and sizing chart, click here.

EP3 Sonic Defenders protect your hearing without interfering with your ability to hear routine sounds or conversations. Their double-flanged-stem design fits most people and provides a Noise Reduction Rating (NRR) of 24dB. Sounds, at safe levels, are allowed to pass through into the ear canal, while potentially harmful noises (above 85dB) are reduced via a proprietary design that incorporates a special noise-reducing filter. EP3s include attached filter caps, which can be inserted for additional protection and blocking out lower-level noise, like that heard on a plane, where hearing ambient sounds or conversations isn't critical. Right/left color-coded Sonic Defenders are made from a soft but durable, hypoallergenic polymer that provides all-day comfort and an extended product life (up to 6+ months, depending on usage and care). Their patented EarLock® retention rings lock the earplugs in place, while soft, adjustable double-flanged stems provide secure seals in the ear canals. A low-profile design means EP3s can be worn while wearing a helmet or mask, or while using a phone or headset. Available in clear, black, or orange.

Comfortable EP3 Sonic Defenders also serve as earpieces for SureFire Hearing Protection and other compatible radio communication systems* simply by removing the noise-reducing filter and attaching the earpiece to the system. NOTE: EP3 earpiece will not provide hearing protection if the noise-reducing filter is removed.

EP3s are available in small (S), medium (M), and large (L). Proper size is based on the dimensions of your ear's concha bowl. Size "medium" fits most people; however, to ensure the best possible fit, click on the Sizing Chart thumbnail image above or download detailed specifications here to also view the sizing chart on page 4. For those with larger (in diameter) ear canals, the three-flange stem of our EP4 Sonic Defenders may provide a better fit than the EP3's two-flange stem.

EP3 Sonic Defenders are sold as a single left/right set or in a box containing 25 sets. Each set is packaged in a convenient carry case and includes a polymer lanyard.

Thales: Covert Security Harness; Harris: Security Force Communication Set;

Motorola: Surveillance Kits; Tactical Command Industries: Tactical Earpiece Products; Peltor: Lightweight Systems-Hearplug;
Silynx: C4Ops Headset

[NSN: 6515-01-549-6448, 6515-01-549-6453, 6515-01-549-6457]
  • 24dB Noise Reduction Rating (NRR) with filter caps inserted
  • Lowers potentially dangerous noise levels above 85dB
  • Hear safe sound levels (with filter caps out) as if you weren't wearing ear plugs
  • Patented EarLock® retention rings utilize seven contact points to lock earpieces in place and fit the same way every time; soft, double-flanged stems provide secure seals and all-day comfort
  • Made from hypoallergenic, medical-grade polymer that's soft, durable, and long-lasting
  • Low-profile design allows you to keep them in place while wearing a mask, helmet, hat, or while using phone, headphones, or supplemental hearing muffs
  • Serve as earpieces for compatible* radio communication systems
  • Available in clear, black, or orange
  • 26" polymer lanyard included

Related Information

Parts and Accessories

handy ear plugs

I truelly love these ear plugs. They are easy to put in, not annoying once in, come in a handy carry case, and block out noise very well. I use them at the race track ( 24 hour rolex at daytona) and take them to all concerts with me. You can still hear well, it just blocks the noise. I have several pairs so I am never without them when I need them. I highly recommend them to everyone.

Reviewed by jill (Posted on 10/13/13)

Loving these

My father has an older style and always praised them. I got mine and absolutely love these. They allow you to hear noises as if you were not wearing them, including normal conversations. Yet when a gun goes off it blocks a vast majority of the sound. Only regret is that I did not buy them sooner.

Reviewed by Jason (Posted on 10/13/13)

EP3 Sonic Defenders

Best earplugs I have used.

Reviewed by Brian Gilmore (Posted on 10/12/13)

EP3 Are Great

I ordered couple of these months ago, and since then these are the only ear protection device I wear. The do their job, and are very comfortable. You can spend the entire day at the shooting range or anywhere else, without noticing you're wearing them. Great product, and for the price I don't believe there is nothing better out there!

Reviewed by Fernandino57 (Posted on 10/12/13)

Good product

the plugs worked very well I like them, but too many small pieces to lose and after three weeks I had lost most of the products accessories..and no longer use the product

Reviewed by gregg (Posted on 10/12/13)


I had a pair of custom-made earplugs--they worked very well, but I lost one. I decided to try the Sonic Defenders--they work very well also and cost a lot less. I have a loud motorcycle(Thunderheader) but these keep the sound at bay. I recommend!

Reviewed by Burrhead (Posted on 10/12/13)

Not what I expected

I am a 64 year old motorcycle rider. My bike has Vance & Hines "long shots" exauaust, a bit on the loud side. I'm trying to save what hearing I still have by wearing ear protection. A friend recommended your product and after a good bit of looking around Richmond VA. I ordered them on line. The ear plug , while very comfortable, did very little to tone down my loud exhaust. I find foam ear plugs much more affordable, even though some are quieter than others.

Reviewed by John Savage (Posted on 10/12/13)

EP3 hearing protectors

Purchased these on the basis of reviews. They are comfortable and work well. Was so pleased that I ordered more to share with friends. I use them most often when at the movies. The sound level is enough to cause hearing loss.

Reviewed by J. Shields (Posted on 10/12/13)

Good ear protection

These ear plugs are the most comfortable/hearing safe plugs I have used. Really like how it blocks out loud gun shots while being able to still communicate with other shooters. Give it 5/5. Used the medium size; works for me just fine.

Reviewed by Todd (Posted on 10/12/13)

EP3 Sonic Defenders

The EP3 Sonic Defenders are fantastic. I play the great highland bagpipes, and use them whenever I play. They keep just enough volume from my ears that I don't get the ringing sensation in my ears after playing, yet they allow enough in for me to properly tune the instrument. They also have the added advantage of being low profile, so they can be worn during a perfomance without being too obvious.

Reviewed by Garrett (Posted on 10/12/13)