Bluetooth Capable Hearing Protection from Radians

Radians R-3700

Radians announced the company is now offering a Bluetooth capable set of hearing protection called the R-3700 Bluetooth Quad Mic. The new ear pro is a muff style set of hearing protection that offers a noise reduction rating (NRR) of 24 dB plus a wealth of electronics features that may be of interest to anyone upgrading from passive muffs.

These muffs have an amplification circuit that boost low level sounds – such as conversation – while also protecting against harmfully loud sounds like gunfire. Unlike some of the least expensive muffs, the circuitry does not simply cut off the electronic amplification when a loud noise is encountered. Rather, the muffs use a compression system to reduce the harmful sounds while continuing to boost the soft sounds. In general, this will offer a better ability to hold conversations and hear range commands even when others are shooting.

Radians uses four microphones in these muffs to give the wearer a good sense of where sounds are coming from. I’ve used mono, stereo and quad mic systems from other manufacturers, and have found the four microphone systems to be a clearly superior product.

The R-3700 has Bluetooth compatibility. This will allow you to connect your phone or other audio device to the muffs and receive sounds through it.

These muffs run on two AAA batteries and have a MSRP of $129.

Richard Johnson

An advocate of gun proliferation zones, Richard is a long time shooter, former cop and internet entrepreneur. Among the many places he calls home is


  • Dracon1201

    Now I can play my soundtrack

    • Sam Damiano

      I use an different model (wired to run range commands for match practice. I have listened to music once or twice but found I didn’t pay attention to the music.

    • Kristoff

      The John Wick soundtrack, right?

  • iksnilol

    Been waiting for this for a while, so far I’ve just used bluetooth earplugs and then regular muffs over them

  • GaryOlson

    AAA batteries, good I can use the rechargable batteries I use in all my other devices.

  • Kristoff

    So I have a genuine question about this kind of earmuff, not this particular model, but this design. They always seem to amplify everything. If I take them out skeet shooting for example, they’ll amplify the shooting at the other bays. It’s deafening. So my question is: What am I doing wrong?

    • Blake

      Nothing, my guess is the models you have tried use the basic amplifying circuit instead of a compression circuit as mentioned above.

  • Cymond

    So if I understand correctly, the correctly on these doesn’t cut out at all?

    We bought some cheap electronic muffs years ago, and they cut out completely when there’s a gunshot, and take like 2 seconds to cut back in. As a result, they’re essentially worthless at a busy range.

  • Amplified Heat

    I’d sure like a more detailed review, if anyone has these. They look to be 1/3rd less than the Peltor 500’s yet have a more sophisticated mic arrangement (2db higher rating, though). There don’t appear to be ANY real user reviews yet, or even discussion. Anywhere. Despite being in stock & for sale, all the usual places.