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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 6 min read · Independent comparison
• Williams AV Sound HED 021 — biggest strength: A true folding on-ear headphone with a 32 Ω mono driver, sized for adults and rated for mild, low-gain hearing loss. It folds down for storage and takes replaceable earpads (HED 023 / HED 023-100).
• Williams AV Sound HED 021 — biggest trade-off: It is not a noise blocker. There is no attenuation rating here, and it is mono, not stereo — so it is not a music or gaming headphone, and it does nothing for a child.
• Alpine Hearing Protection Muffy Kids Ear — biggest strength: Certified 22 dB acoustic attenuation, silicone-free soft materials, an adjustable headband, and a travel bag included. Built for kids 3–16, including children with autism or sensory sensitivities.
• Alpine Hearing Protection Muffy Kids Ear — biggest trade-off: It is a passive noise blocker, not an audio device. There is no driver, no impedance figure and no cable — it is for quiet, not for listening.
• Pick Williams AV Sound HED 021 if you are an adult who needs a foldable on-ear headphone for a personal listening system and want replaceable pads.
• Pick Alpine Muffy Kids Ear if you are buying protection for a child's ears at a concert, parade, race, fireworks show or on a plane.
This is an adult-size folding headphone, and the specs say so plainly. The driver is rated at 32 Ω, mono, with a mild and low-gain hearing loss rating. That combination tells you what it is: a voice-first headphone for assistive listening — the kind of thing that pairs with a body-pack receiver or a loop system where intelligibility matters more than bass.
The foldable design is the headline for me. It collapses down, and the listed dimensions — roughly 6-7/8" x 5-5/8" x 7/8" folded — make it the sort of thing you can tuck into a bag or a drawer between uses. At 0.12 lbs it is genuinely light on the head, which matters if you wear it for an hour-long tour, a lecture or a service. The replaceable earpads (HED 023, HED 023-100) are a real long-term plus: shared and institutional gear lives or dies on whether you can refresh the pads, and here you can.
Who should buy it? An adult who needs a compact on-ear headphone for a personal listening system, or someone maintaining a set of assistive listening gear who wants folding, lightweight and serviceable. Who should skip it? Anyone expecting stereo music playback, deep isolation or a child-friendly fit. There is no attenuation rating on this sheet, so do not buy it as hearing protection. And if you need stereo separation for music, a mono driver is the wrong tool.
Muffy Kids is a different category of product entirely — it is ear protection, not a headphone you listen through. The core number is 22 dB of acoustic attenuation, tested and proven in accordance with US and EU regulations. That is the figure that matters, and it is the reason this thing exists: to knock down the peak levels at a party, concert, airplane, parade, event, race or fireworks display before they do damage.
The materials are aimed squarely at kids. Silicone-free, ultra soft and lightweight, with an adjustable headband for a snug fit around the ears. That adjustability is what covers the 3–16 age range in one product. Alpine also positions it for children with autism or sensory issues — the noise reduction helps with sensory overload and external triggers, which is a very specific and very real use case that a general-purpose headphone cannot serve.
There is a travel bag in the box, and the whole thing weighs 174 g, which is light enough for a kid to wear through a long event without complaining. The listed color is blue. Alpine notes 25 years of R&D and Dutch design; the product carries the 2021 Red Dot Design Award, which is a genuine design recognition, not a performance claim — the 22 dB attenuation is the performance claim, and that is certified.
Who should buy it? Parents of kids 3–16 heading somewhere loud, and families supporting a child with autism or sensory sensitivities. Who should skip it? Adults — this is sized for kids. And anyone who wants to actually hear audio through it, because there is no driver here. It is a sound blocker, full stop.
• Best for adult assistive listening → Williams AV Sound HED 021. 32 Ω mono driver, mild/low-gain hearing loss rating.
• Best for certified noise reduction → Alpine Muffy Kids Ear. 22 dB attenuation, tested to US and EU standards.
• Best for kids aged 3–16 → Alpine Muffy Kids Ear. Adjustable headband, soft silicone-free materials, kid sizing.
• Best for sensory and autism support → Alpine Muffy Kids Ear. Explicitly designed for sensory overload and external triggers.
• Best for portability → Williams AV Sound HED 021. It folds, and it is startlingly light at 0.12 lbs.
• Best for long-term maintainability → Williams AV Sound HED 021. Replacement earpads are available as HED 023 and HED 023-100.
• Best for a loud event with a child → Alpine Muffy Kids Ear. Travel bag included, 174 g, built to be carried and worn.
• Best for stereo music → neither. One is mono, the other has no driver at all.
In my opinion these two are not really competitors — they solve opposite problems. If I were outfitting an adult for a personal listening system and wanted something foldable, light and repairable, I would buy the Williams AV Sound HED 021 without much hesitation. If I were taking a child to a fireworks show, a race or a concert, I would buy the Alpine Muffy Kids Ear, because 22 dB of certified attenuation is the only thing on this page that actually protects a young ear. Buy the one that matches the job. Check the current price on Amazon before you commit, since both are the kind of purchase where the right fit beats the cheaper box.
are on ear headphones good
It depends on the job. On-ear designs like the Williams AV Sound HED 021 sit against the ear rather than around it, which keeps them light — 0.12 lbs here — and easy to fold away. They trade some isolation for comfort and portability, which suits spoken-word listening more than noisy environments.
what are the best open ear headphones
I would not call either product open-ear in the usual sense. The Williams AV Sound HED 021 is a folding on-ear headphone with a 32 Ω mono driver, and the Alpine Muffy Kids Ear is a passive noise blocker with 22 dB attenuation and no driver at all. Neither is an open-ear audio design.
which are the best over the ear headphones
For kids' protection, the Alpine Muffy Kids Ear is the one to look at here: 22 dB certified attenuation, soft silicone-free materials, an adjustable headband and a travel bag. It is sized for ages 3–16, so it fits a child rather than an adult.
what are the best over the ear headphones to buy
Match the specs to the use. Need a foldable, lightweight adult headphone for assistive listening? The Williams AV Sound HED 021 fits, with replaceable earpads. Need to protect a child's hearing at a loud event? The Alpine Muffy Kids Ear is the correct pick.
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