We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-29 · 7 min read · Independent comparison
If you want a single pair of retro-styled wired on-ear headphones built for one listener who cares about sound range and a lifetime warranty, choose Koss R10; if you need a 24-pack of colorful, kid-friendly on-ear headphones to outfit a whole classroom or school set, choose Hengliyuan 24.
• Koss R10 — biggest strength: a genuine hi-fi spec sheet for a single listener: 30 Hz–20 kHz frequency range, dynamic drivers, plush leatherette cushions, an adjustable headband, and a lifetime warranty.
• Koss R10 — biggest trade-off: it is one pair of wired headphones with a single 3.5 mm plug, so there is no bulk value and no color variety to hand out.
• Hengliyuan 24 — biggest strength: you get 24 individually wrapped headphones in 8 colors with reinforced 3.5 mm plugs and swivel, retractable earcups built for class sets.
• Hengliyuan 24 — biggest trade-off: each unit is a lightweight, child-first design with a narrower published frequency response (20.4 kHz) and a 1-year warranty rather than a per-unit hi-fi focus.
• Who each pick is for: Koss R10 for the individual listener who wants retro looks and durable everyday audio; Hengliyuan 24 for teachers, schools, and anyone buying for a group of kids.
The Koss R10 is a single pair of on-ear headphones with a clear personality. It is wired, it runs on a 3.5 mm jack, and it leans into a retro 90s aesthetic in black plastic. The published frequency range stretches from 30 Hz to 20 kHz with dynamic drivers, which tells you the design intent is real audio reproduction rather than "good enough for a worksheet." That range covers the deep bass and crisp highs the description calls out, so music, games, and video all sit inside its comfort zone.
The build story is where it earns its keep for one person. Plush leatherette cushions, an adjustable headband that flexes to different head shapes, and a stated durable, ultra-lightweight design for travelers, musicians, and listeners on the go. It also carries a lifetime warranty, which is a meaningful signal for a product meant to survive daily use. At roughly 5.6 ounces it stays light on the head, and the package itself is compact enough to toss in a bag.
Who should buy it: a commuter, a student, a gamer plugging into a laptop or tablet, or anyone who wants a wired pair that looks like it walked out of the 90s and sounds better than the price of admission suggests. Who should skip it: anyone outfitting a classroom, a group, or a family of kids. Buying 24 of these makes no sense when the whole point is one durable, good-sounding pair for one set of ears. The single 3.5 mm plug also means no Bluetooth audio despite the spec sheet listing Bluetooth as a wireless technology field — treat it as the wired headphone it is.
The Hengliyuan 24 is not really "a headphone." It is a classroom kit. The number in the name is literal: 24 packs, each individually wrapped and sealed, spread across 8 colors — red, orange, yellow, light blue, dark blue, pink, white, and black. If you have ever tried to keep track of whose headphones are whose in a room of kids, that color spread is the entire feature. Each child gets a color, each pair gets returned to its wrapper slot, and the chaos drops.
The engineering is aimed squarely at surviving children. The cable is sturdy PVC, 1.2 m (about 47.25 inches) long, which gives smaller bodies room to move without yanking the plug out. The 3.5 mm plug uses a special reinforcement process that the description says extends usable life by at least 6–12 months. The headband retracts to fit both adult and child heads, and the earcups swivel so the whole thing folds down for storage. Soft sponge cushions keep it comfortable for long sessions, and the published impedance of 32 ohm with 92 dB sensitivity means it will run fine off a Chromebook, laptop, tablet, or phone jack without a headphone amp.
Who should buy it: teachers, librarians, school IT buyers, homeschool parents, and anyone running a class set that plugs into Chromebooks, PCs, or tablets. Who should skip it: a single adult who wants one nice pair of headphones for personal listening. You would be paying for 23 headphones you don't need, and the child-first tuning is not built to impress an audiophile. The 1-year warranty is also a per-kit promise, not the lifetime coverage the Koss carries.
• Best for sound quality → Koss R10. A published 30 Hz–20 kHz range with dynamic drivers is a hi-fi spec, and it is tuned for one listener who cares.
• Best for a group or classroom → Hengliyuan 24. 24 sealed units in 8 colors, reinforced plugs, and swivel earcups are designed for exactly this job.
• Best for durability over years → Koss R10. A lifetime warranty and a stated durable, ultra-lightweight design beat a 1-year kit warranty for long-term peace of mind.
• Best for kids' fit and storage → Hengliyuan 24. Retractable headbands fit adult and child heads, and the swivel earcups fold flat for a shelf or bin.
• Best for plug-and-play on a laptop or tablet → either. Both use a standard 3.5 mm jack and both are wired, so both connect without pairing or charging.
• Best for cable length on small desks → Hengliyuan 24. The 1.2 m cable is sized so children aren't fighting a too-short cord.
• Best for retro looks → Koss R10. The 90s-styled black plastic housing is a deliberate aesthetic choice, not an accident.
• Best for replacing one broken pair → Koss R10. You buy one; with the Hengliyuan set you'd be opening a sealed 24-pack for a single child.
For me, the honest answer comes down to how many ears you're buying for. If it's your own two, I'd take the Koss R10. The 30 Hz–20 kHz range, dynamic drivers, plush cushions, and lifetime warranty make it the better-designed single pair, and the retro look is a bonus rather than a gimmick. If it's a classroom, a library, or a family of kids, the Hengliyuan 24 wins by default — 24 sealed headphones in 8 colors with reinforced plugs and swivel cups is a kit, not a headphone, and it solves a problem the Koss simply isn't built for. I would not cross-shop them. In my opinion, buy the Koss for one person who cares about sound, and the Hengliyuan for a room full of students who need a pair each. Whichever way you lean, check the current price on Amazon before you commit, since bulk kits and single pairs move in very different directions.
On-ear headphones rest on top of the outer ear rather than around it, so fitting is mostly about the headband. The Koss R10 has an adjustable headband that flexes to different head shapes, and the Hengliyuan 24 uses a retractable headband that fits both adult and child heads. Slide the band until the cushions sit flat against your ears without pressing hard.
Both pairs use soft cushions — plush leatherette on the Koss R10 and sponge on the Hengliyuan 24. Wipe the cushions and plastic housing with a barely damp cloth and let them air dry fully before use. Keep liquid away from the 3.5 mm plug and the cable, since moisture is the fastest way to kill a wired connection.
If you mean getting them out of the packaging, the Hengliyuan 24 ships as 24 individually wrapped and sealed units, so each pair needs its wrapper opened separately — which is exactly what makes them easy to hand out and store. The Koss R10 comes as a single standard-packaged pair, so there's nothing to unseal beyond the box.
Yes, both are listed for a wide age range, but they aim at different users. The Hengliyuan 24 is explicitly built as a child-friendly class set with a 1.2 m cable and a 32 ohm, 92 dB spec that runs off a Chromebook or tablet jack. The Koss R10 lists an adult age range with a 5.6-ounce lightweight build and a lifetime warranty, so it suits grown-up daily listening.
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