Description
The Allen 4149 ULTRX Bionic Electronic Earmuff is the kind of ear pro that earns its spot in your range bag fast. It pairs a 22 dB Noise Reduction Rating with two hi-gain stereo microphones, so normal conversation, range commands, and footsteps in the woods come through clear while damaging blasts get knocked down. The moment sound spikes past 82 dB, the electronics cut in and shut off amplification in a fraction of a second, which means you get situational awareness right up until the trigger breaks.
What Makes the ULTRX Bionic Earmuff Worth Grabbing
Allen built these around a dynamic wave compression system and a symmetrical microphone setup, so audio stays balanced and natural instead of that tinny, one-sided sound you get from cheaper electronic muffs. There's also an aux port on board, so you can plug into a phone or music player and run some background audio between strings of fire. Power comes from two AAA batteries that give you plenty of runtime, and the on-board electronics are simple enough that you won't be fighting menus to get up and running. Just note the batteries aren't included, so toss a fresh pair in your kit.
Comfort and Build on the Yellow 4149
The over-the-head design uses a wide, padded headband and plush pillow foam ear cushions, which makes a real difference when you're posted up at the bench for a few hours or working through a long clays round. The rubberized exterior holds up to knocks, drops, and general range abuse. That high-visibility yellow shell isn't just for looks either, it makes the muffs easy to spot in a cluttered bag or on the bench so you're not digging around before a session.
Between the electronic hearing boost, the solid 22 dB protection, and the comfort for all-day wear, the 4149 is a strong pick for pistol and rifle ranges, trap and skeet, hunting, and even yard work or shop time where you still want to hear what's going on around you.
Key Specifications
- Manufacturer: Allen Company
- Manufacturer Part Number: 4149
- UPC: 026509077978
- Noise Reduction Rating (NRR): 22 dB
- Style: Over the Head
- Color: Interstate Yellow
- Microphones: 2 hi-gain stereo microphones
- Auto Shut-Off: Cuts amplification at 82 dB
- Power: 2 AAA batteries (not included)
- Aux Port: Yes
- Certification: ANSI S3.19, CE 352-2
- Shell Material: Rubberized ABS exterior
- Weight: 0.84 lb
What’s Included
- ULTRX Bionic Electronic Earmuff (Yellow)
- Aux input cable
Frequently Asked Questions
How does the electronic feature on the ULTRX Bionic Earmuff work?
Two hi-gain stereo microphones pick up ambient sound and amplify it so you can hear conversation and range commands clearly. When noise spikes past 82 dB, like a gunshot, the electronics shut off amplification in about 0.02 seconds to protect your hearing. Once things quiet down, the sound comes right back so you never lose awareness for long.
What batteries does the Allen 4149 earmuff take, and are they included?
It runs on two AAA batteries, which power the microphones and electronics. The batteries are not included in the box, so plan on adding a fresh pair before your first outing. Keeping a spare set in your range bag is a smart move for longer sessions.
Is 22 dB enough protection for indoor pistol ranges?
A 22 dB NRR is a solid rating for most range environments and covers rifle, pistol, and shotgun use well. For very loud indoor ranges or shooting alongside muzzle brakes, a lot of folks like to double up with foam plugs underneath for added protection. On outdoor ranges and in the field, these muffs on their own handle the job nicely.
Can I connect the ULTRX Bionic Earmuff to my phone?
Yes, the earmuff has an aux port that lets you plug into a phone, music player, or similar device with a standard cable. It's a handy way to run music or a call between strings of fire. Keep in mind this is a wired aux connection rather than Bluetooth.





Reviews
There are no reviews yet.