Description
When you need to shut out loud, continuous noise and situational awareness isn't the priority, the SureFire EP10 Sonic Defenders Ultra Max are about as serious as passive protection gets. These full-block earplugs carry a 30 dB Noise Reduction Rating, the highest of any Sonic Defenders model, thanks to soft memory-foam Comply Canal Tips that expand inside the ear canal for a near-custom seal. No batteries, no filters, no fuss. Just solid, reliable noise blocking whenever you slip them in.
What Sets the EP10 Sonic Defenders Apart
The secret to these plugs is SureFire's patented EarLock retention rings. Each flexible ring has seven grab points that lock the plug in place with light, even pressure, so they stay put through movement, sweat, and long shifts without working loose. The whole design sits low and nearly flush with the ear, which means you can wear them comfortably under a hat, helmet, mask, or a set of muffs for doubled-up protection. They're made from a soft, hypoallergenic medical-grade polymer that won't irritate your ears even during all-day wear.
Where the Ultra Max Plugs Earn Their Keep
These are built for high-decibel environments where you just want the noise gone. Think indoor ranges, industrial floors, construction sites, heavy equipment, or concerts. The full-block foam tips seal out as much sound as possible, so they're not the pick if you need to hold a conversation, but for raw attenuation they're hard to beat. With proper care the plugs hold up for six months or more, and the foam Comply tips can be swapped out as they wear so you keep that fresh, effective seal.
Fit and Care for Your Sonic Defenders
This is the medium size in black, which fits most adults. The set includes a 26-inch detachable lanyard so you can keep them around your neck between uses, plus a carrying case to protect them in a bag or pocket. Roll the foam tips down before inserting, let them expand for a full seal, and you're good to go.
Key Specifications
- Manufacturer: SureFire
- Model: Sonic Defenders Ultra Max
- Manufacturer Part Number: EP10-BK-MPR
- UPC: 084871323222
- Noise Reduction Rating (NRR): 30 dB
- Style: Full-Block
- Type: Passive, Non-Electronic Ear Plug
- Ear Tips: Memory-Foam Comply Canal Tips
- Retention: Patented EarLock Retention Rings (7 contact points)
- Material: Hypoallergenic Medical-Grade Polymer
- Color: Black
- Size: Medium (fits most)
- Quantity: 1 Pair
- Service Life: 6+ months with proper care
- Lanyard: 26-inch detachable
What’s Included
- 1 pair SureFire EP10 Sonic Defenders Ultra Max ear plugs (Medium, Black)
- 26-inch detachable lanyard
- Carrying case
Frequently Asked Questions
How much noise do the EP10 Sonic Defenders Ultra Max block?
They carry a 30 dB Noise Reduction Rating, which is the highest of any Sonic Defenders model. The full-block foam tips are designed to shut out as much continuous noise as possible. That makes them a strong choice for ranges, industrial work, and other loud environments.
Can I still hear conversations with the EP10 plugs in?
No, and that's by design. These are full-block plugs meant for maximum noise reduction, not situational awareness. If keeping conversations and ambient sound is a priority for you, a filtered or electronic model would be a better fit.
How do I get the best fit and seal from the Sonic Defenders?
Roll the memory-foam Comply tips down between your fingers, insert them into the ear canal, and hold for a few seconds while the foam expands to form a seal. The EarLock retention rings then lock them in place using seven contact points. This medium size fits most adults.
How long do the EP10 Sonic Defenders Ultra Max last?
With proper storage and care, the plugs are durable enough for six months or more of use. The foam Comply tips can be replaced as they wear down so you keep a fresh, effective seal. Storing them in the included case between uses helps extend their life.





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