Howard Leight Impact Sport Review

Independently researched · Updated July 2026

Ask ten shooters what electronic muff to buy first and eight will say Impact Sport. After years on ranges, the recommendation still holds: it does everything a range muff must do, does nothing embarrassingly badly, and costs less than the muffs it's compared against. Here's the full picture, including the two upgrades most owners end up making.

Electronics: the reason it exists

Stereo microphones pass through range commands, conversation and environmental sound, then compress anything dangerous — amplified output is capped around 82 dB, so a shot arrives as a harmless click in otherwise continuous audio. Directionality through the stereo mics is good enough to localize voices, which cheaper single-mic muffs can't do. There's hiss at maximum volume, the one budget tell; at normal listening levels it disappears. An aux input takes a phone or radio feed by cable.

Protection: NRR 22, know its lane

NRR 22 is adequate for outdoor pistol and rifle sessions. Indoors — where concrete walls throw every muzzle blast back at you — or under muzzle brakes and magnum calibers, NRR 22 alone is not enough: wear foam plugs underneath, which is standard practice and adds roughly 5 dB over the higher rating (the math is in our NRR guide). The protection is passive and permanent; dead batteries only silence the microphones.

Fit: the slim-cup advantage

The Impact Sport's defining physical trait is its cutaway slim cup, which clears rifle and shotgun stocks instead of getting shoved off-seal by the comb. That single feature is why it became the long-gun default. The frame folds compact, and at this weight it disappears in a range bag.

Battery and endurance

Two AAA cells deliver roughly 350 hours, and an automatic 4-hour shutoff protects you from the classic left-it-on-in-the-bag battery drain. Between the two, most shooters change batteries a couple of times a year.

Weaknesses

Three honest ones. The stock foam cushions are thin — comfortable for a casual session, pressure-prone over long days and the main source of seal problems for glasses wearers (see muffs with glasses). The headband padding is similarly minimal. And NRR 22 is the class floor; the Walker's Razor Slim rates 23 and the Peltor Tactical 500 reaches 26 for more money.

The upgrades everyone makes

Aftermarket gel cushions are the transformative one — better comfort, better seal around glasses temples, and the reason many Impact Sports stay in service for a decade. Fresh cushions or gels install in a minute:

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Versus Walker's Razor Slim

The perennial head-to-head. The Razor Slim counters with NRR 23, a 0.02-second reaction time and frequent sales that undercut the Impact Sport's price; the Impact Sport answers with its auto shutoff, aux input and a slightly more natural pass-through sound. Our Razor Slim review runs the comparison in full — the short version is that neither is a mistake, and price on the day often decides it.

Verdict

The Impact Sport earns its default status: slim cups that work with long guns, proven electronics, marathon battery life and a fair price. Buy it, add gel cushions when the stock foam annoys you, and add plugs underneath for indoor work — that combination covers most shooters for years.

Frequently asked questions