We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 7 min read · Independent comparison
If you want a full classroom set of 18 wired headphones that share one standard 3.5 mm plug, choose Konohan 18; if you need serious passive noise blocking for loud events and sensory-sensitive kids, choose ProCase Noise Cancelling Headphones. Those are two completely different jobs, and that is the whole point of this comparison.
• Konohan 18 — biggest strength: 18 individually wrapped on-ear headphones in one pack, each with a 3.5 mm wired plug — a ready-made class set for testing, lessons and computer labs.
• Konohan 18 — biggest trade-off: "Noise cancelling" here means everyday passive isolation with a soft PU leather cushion, not certified hearing protection, and the set is bulky to store at 2.9 pounds total.
• ProCase Noise Cancelling Headphones — biggest strength: Certified passive hearing protection rated SNR 27 dB (ANSI S3.19 and CE EN352-1), built to cut sensory overload at genuinely loud events.
• ProCase Noise Cancelling Headphones — biggest trade-off: It is an earmuff-style protector, not a listening device — no cable, no 3.5 mm jack, no audio playback at all.
• Pick Konohan 18 if you are a teacher, school tech coordinator or event organizer equipping a group.
• Pick ProCase if you are a parent buying protection for one or two kids around fireworks, monster truck shows, air shows or shooting sports.
Konohan 18 is a bulk classroom product first and a headphone second, and that framing explains every design choice. You get 18 packs, each headphone wrapped individually in its own PE bag, which matters more than it sounds: individually bagged units are easy to hand out, easy to count back in, and easy to store without a tangled pile forming. The multicolor scheme is deliberate too — it gives students something to identify with, and it makes missing units obvious at a glance.
On the audio side, the specs are modest but sensible for the job. The dynamic drivers cover 20Hz–20,000Hz at 32 ohm impedance, which is an easy load for phones, laptops and classroom desktops. Output is described as clear sound with a maximum of 95–101 decibels — loud enough for a noisy room, not so loud that it feels harsh in everyday use. The on-ear PU leather cushions and adjustable headband are built to fit most students and adults, and the 1.2 m (3.94 ft) PVC cable is the right length for sitting at a desk without a loop of slack on the floor. ABS shell, PVC jacket, lightweight and not easy to corrode — this is a product designed to survive being used repeatedly, not a disposable giveaway.
Who should buy it: teachers and school staff who need a class set of headphones for testing, language labs, computer centers and hotels; anyone organizing a party or event who wants a reward gift in volume; buyers who need every unit to work with the same ordinary 3.5 mm jack. Who should skip it: anyone who wants real certified hearing protection, anyone who needs Bluetooth or wireless freedom, and anyone buying for a single person — 18 units is the entire point, and it is overkill otherwise.
ProCase is solving a different problem entirely. This is a hearing protector, not a headphone. The solid ABS shell and thickened sound-absorbing foam combine to deliver SNR 27 dB of noise isolation, and the design carries both ANSI S3.19 (US) and CE EN352-1 (EU) certification. That certification is the detail that separates it from a generic pair of earmuffs — it means the attenuation claim has been measured against a defined standard rather than advertised loosely. For a child with autism or sensory processing issues, that reduction in incoming sound is often the difference between coping with an event and melting down at it.
The fit engineering is where ProCase has clearly spent its effort. The ergonomic telescopic arms stretch up to 32 mm (1.3 inch) on each side, which lets one pair cover a wide range of head sizes and ages — useful when kids grow fast and you do not want to rebuy every season. The 360° rotatable cups and ultra-soft cushions are aimed at long-wear comfort, and the holeless pivot is a small but genuinely thoughtful touch: no gap for hair to get caught and pinched. The headband is well padded and skin-friendly, and the compact folding design means the whole thing collapses down for a bag, which is exactly what you want when the destination is a monster truck show, fireworks, an air show, airplane travel, a sports event or a theme park.
Two honest trade-offs. First, ProCase itself notes the earmuffs run a little tight out of the box for more efficient isolation, and suggests stretching them over a box or similar object for a day or two if your child finds them snug — plan for that break-in rather than being surprised by it. Second, and more fundamentally, there is no cable, no 3.5 mm jack and no audio path. If your kid wants to listen to anything, this is the wrong product. Who should buy it: parents of sensory-sensitive children, families who attend loud events regularly, and anyone who needs certified passive protection. Who should skip it: anyone shopping for audio playback, and anyone who needs a single unit rather than the two-pack.
Side-by-Side: Which Should You Choose?
• Best for a classroom or group setting → Konohan 18. 18 individually wrapped units with a shared 3.5 mm standard is a logistics solution, not just a headphone.
• Best for listening to audio → Konohan 18. ProCase has no cable and no jack, so it cannot play sound at all.
• Best for loud events with kids → ProCase. Concerts, fireworks, monster jam shows, air shows, shooting and airplane travel are exactly the scenarios its folding, adjustable design targets.
• Best for sensory needs and autism support → ProCase. Reducing sensory overload is the stated purpose of the thickened foam and 27 dB rating.
• Best for fit across growing kids → ProCase. The 32 mm per-side telescopic arms cover a wide age range with one pair.
• Best for repeated daily handling → Konohan 18. ABS shell, PVC cable and a 32 ohm driver load built for shared, repeated use on standard school hardware.
• Best if you only need one or two → ProCase. The two-pack suits a household; buying 18 units for one listener is wasted.
• Best for portability → ProCase. It folds compactly and weighs 9 ounces; the Konohan set weighs 2.9 pounds in total.
In my opinion, these are not competitors — they are answers to two different questions, so I would buy based on the job in front of me. If I were equipping a classroom, a testing center or a group event, I would buy the Konohan 18 without hesitation: 18 individually wrapped, adjustable, 3.5 mm wired headphones with a 95–101 dB ceiling and a durable ABS/PVC build is precisely what that scenario needs. If I were a parent worried about a sensory-sensitive child at fireworks, a monster jam show or an air show, I would buy the ProCase instead — the SNR 27 dB rating and its ANSI S3.19 and CE EN352-1 certification are the reason, and no headphone in this comparison can substitute for that. Check the current price on Amazon for whichever one matches your job.
No. Konohan 18 is a set of 18 wired on-ear headphones with active noise cancellation and a 3.5 mm jack, intended for listening and classroom use. ProCase is an earmuff-style hearing protector rated SNR 27 dB with no audio connection at all. Different categories of product.
No. ProCase has no cable and no 3.5 mm jack — it isolates sound rather than playing it. If you need audio for online classes or testing, you want the Konohan 18 or another wired headphone.
The data sheet rates them at SNR 27 dB of noise isolation, with ANSI S3.19 (US) and CE EN352-1 (EU) certification. That is meaningful attenuation for loud environments, though ProCase notes the fit runs slightly tight at first for better isolation, and suggests stretching the headband over a box for a day or two if needed.
For a school, Konohan 18 — buying 18 ready-to-use, individually wrapped units with a standard plug is far more practical than assembling protection or headphones piece by piece. For a family of one or two kids who need protection rather than audio, ProCase's two-pack fits better. Compare current prices on Amazon before deciding, since value depends on how many units you actually need.
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