Munitio's first products were in-ear monitors that used actual ammo shells for their casings, hence their trade name. Although the headphones were promoted more as a lifestyle product than a high-performance audio offering, I was pleasantly surprised when I reviewed them for Audiophile Review and found that their performance exceeded many lifestyle earphones I've auditioned. Munitio's latest headphone offering is a full-sized $349.99 over-the-ear headphone that claims to have taken "design cues from industry professionals" to create a "durable, confortable, and precise" new design. Would the PRO40 headphones be as overachieving as the Munitio BLK 9mm Ballistic earbuds? Let's find out.
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The Munitio PRO40 headphones use 40mm titanium-coated drivers with neodymium magnets that are enclosed in a proprietary "Bass Enhancement Chamber." With a sensitivity rating of 100 dB for 1 mW and 32-ohm impedance, the PRO40 should be easily powered by most portable devices. The PRO40's earpads are made of what Munitio calls "protein leather"; I'm not sure how this differs from "carbohydrate leather," but it is certainly soft and very pliable. Munitio's headband design employs what they call "Coda Axis," which is an in-line gimbal technology that Munitio claims "provides each ear-cup a full range of motion to maximize comfort without disturbing the speaker drivers." The PRO40 headband is made of high-density polymer and aircraft-grade aluminum that Munitio says will "sustain heavy use in any environment."
Accessories include two cables, easily attachable via a standard stereo mini-plug: one has a three-button iPod- and iPhone-compatible remote control, and the other is a coiled cord with no remote. Munitio also includes a stereo mini-to-standard-0.25-inch stereo adapter that screws into the coiled cord. The one I received was defective and didn't pass any signal, but any adapter will work. I used one from my Audio Technica ATH-AD900X. The PRO40 also has a nice hard-shell case made of, you guessed it, ballistic nylon - complete with a carbineer for attaching the case to your belt, backpack, or ammo bag.
For most users, a headphone's comfort is the primary determining factor in whether they like or hate the product. The PRO40 gets high marks for fit. Even when I wore glasses, the PRO40's large, soft earpads molded around my glasses' sidepieces to make a tight yet comfortable seal. Unlike many headphones that force you to fiddle to get a tight seal, PRO40 headphones fit well from the beginning and didn't require any tweaking to get optimal comfort.
Given Munitio's macho image, I expected the PRO40 to be rugged, and it didn't disappoint. Short of throwing these headphones against a brick wall, stomping on them, or dropping them from a couple of hundred feet up, I can't think of any way that you could seriously damage the PRO40 during normal use. Even the traditional "I stepped on the cable and yanked my headphones off my head" syndrome is covered: if you step on or pull the cord, it will merely disconnect from the headphones. I especially appreciated the supplied coiled cord, which was just the right length and flexibility to work well with my Astell & Kern AK100 portable player.
My only ergonomic quibble with the PRO40 headphones is that the Coda Axis may not supply enough horizontal flexibility for some users. On my admittedly small head (7.125-inch hat size), I could have used a bit more horizontal travel for equal force on both sides of my ears. As it was, the PRO40s exerted more pressure on the back side of my ears than the front side.
Read more about the Munitio PRO40 headphones on Page 2.