We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-20 · 7 min read · Independent comparison
If you want a wireless, do-everything over-ear headphone for teens and adults that also plays from a memory card or FM radio, choose PowerLocus Over-Ear Headphones; if you need a lightweight, wired, volume-limited pair built specifically to protect a young child's hearing, choose EarFun S1. These two look similar in photos — both fold, both use 40mm drivers — but they are aimed at completely different people. One is a budget all-rounder for bigger users; the other is a safety-first kids' headphone with a cable.
• PowerLocus biggest strength: Wireless freedom with Bluetooth 5.3, plus a 3.5mm cable, Micro SD/TF card slot and FM radio — a rare triple-threat at this end of the market.
• PowerLocus biggest trade-off: It is an adult-sized, feature-heavy design (165g, touch controls, 15-hour battery) that a small child should not be left alone with — no volume cap is specified.
• EarFun S1 biggest strength: An 85dB hard volume limit and a 118g foldable body — the two things parents actually care about for school-age kids.
• EarFun S1 biggest trade-off: It is wired only, with no Bluetooth, no mic and no noise control. There is no battery to charge, but also no cable-free listening.
• Choose PowerLocus if the listener is a teen or adult who wants wireless music, calls and travel-friendly folding.
• Choose EarFun S1 if the listener is a child and hearing safety plus a light, packable wired set is the priority.
PowerLocus is the more ambitious of the two. It is a foldable, stretchable over-ear headphone built on 40mm dynamic drivers with a 32-ohm impedance and a 20Hz–20kHz frequency range. In plain terms, that is a standard, well-proven driver recipe — the kind that produces solid bass and clear mids without needing an amp. The brand leans into "deep bass" and "dynamic power sound" in its own marketing, and there is no reason to doubt the physics: a 40mm dynamic driver in a closed over-ear cup is the classic formula for exactly that.
Where PowerLocus pulls ahead is connectivity. You get Bluetooth 5.3 for wireless listening, a 3.5mm jack so it works with anything that has a headphone port, a Micro SD/TF card slot for offline playback, and FM radio. That combination is unusual — most headphones in this class give you Bluetooth and a cable, full stop. The built-in mic with noise-reduction/echo-cancellation processing means you can take calls hands-free, and the quoted 15 hours of music playback (14–15 hours talk time) covers a couple of long travel days per charge, with about 2.5 hours to refill. Bluetooth range is listed at up to 36 feet, which is generous enough to leave your phone on a table and walk around a room.
Comfort and design are pitched at a broad audience. The earcups use memory-protein foam wrapped in leather, the headband stretches to fit different head sizes, and the whole thing folds down for storage in the included protective case. At 165g it is light for an over-ear headphone, though noticeably heavier than the EarFun. PowerLocus explicitly targets "unisex kids, teens and adults," and it comes with a 2-year warranty. In my opinion, this is the right pick for a teenager or adult who wants one headphone for the commute, the gym and the desk — someone who will actually use the SD card slot or FM tuner on a flight or a hike. The person who should skip it is a parent shopping for a five- or six-year-old: there is no stated volume limit, and the touch controls and multi-mode playback are more than a small child needs.
EarFun S1 is not trying to be a general-purpose headphone. It is a kids' headphone, and every design decision flows from that. The headline feature is the 85dB volume limit — a hard ceiling that keeps output at a level generally considered safe for children's ears while still preserving detail in the mix. If your child uses headphones for online classes, school-issued tablets, audiobooks or long car rides, that single spec matters more than any codec or battery figure.
The sound side is deliberately simple: 40mm dynamic drivers with EarFun's own tuning, quoting 32-ohm impedance, 100dB sensitivity and a 20Hz–20kHz range. That is enough to deliver clear mids and highs with some bass weight for cartoons, lessons and music, without any distortion drama. There is no Bluetooth, no microphone and no active noise control here — it is a wired 3.5mm headphone, with a gold-plated angled connector designed to survive the kind of yanking a kid will inevitably subject it to. The upside of wired is that there is nothing to charge, nothing to pair and nothing to lose connection mid-lesson.
Physically, the S1 is the friendlier of the two for small heads. At 118g it is one of the lighter on-ear designs around, the headband adjusts, and the earcups rotate 90 degrees so the whole thing folds flat into a backpack. EarFun also states it is CPC-certified and built from materials chosen to resist twisting, backed by an 18-month warranty. The person who should buy this is a parent of a younger child who wants a safe, cheap-to-replace, no-fuss headphone for school and travel. The person who should skip it is anyone older than roughly ten: a teen who wants wireless music and calls will find the S1's wired-only, volume-limited design limiting, and adults will simply find it small and quiet.
Side-by-Side: Which Should You Choose?
• Best for wireless listening → PowerLocus Over-Ear Headphones. Bluetooth 5.3 plus a 3.5mm cable means it works with or without a cord.
• Best for child hearing safety → EarFun S1. The 85dB limit is the whole point of this headphone; PowerLocus specifies no such cap.
• Best for taking calls → PowerLocus Over-Ear Headphones. It has a built-in mic with noise-reduction and echo cancellation; the S1 has no microphone.
• Best for lightweight travel → EarFun S1. At 118g against 165g, and folding flat, it is the easier one for a child to carry.
• Best for offline and radio playback → PowerLocus Over-Ear Headphones. The Micro SD/TF slot and FM tuner have no equivalent on the S1.
• Best for small heads and durability against kids → EarFun S1. Adjustable headband, 90-degree rotating cups and CPC-certified construction.
• Best for a single headphone shared across teen and adult use → PowerLocus Over-Ear Headphones. The stretchable, foldable over-ear fit and 2-year warranty suit a wider range of users.
If I were buying for myself or for a teenager, I would buy the PowerLocus Over-Ear Headphones. In my opinion, the mix of Bluetooth 5.3, a wired fallback, memory-card and FM playback, a built-in mic and roughly 15 hours of battery makes it the far more useful object day to day — and the 2-year warranty is reassuring. I would only hand someone the EarFun S1 if the listener is a young child, because that 85dB cap is a genuine safety feature you cannot retrofit onto the PowerLocus. Two different jobs, two different answers — and price should not be the deciding factor, so check the current price on Amazon before you commit.
For a young child, EarFun S1 is the safer choice because of its 85dB volume limit, lighter 118g body and CPC-certified build. PowerLocus is aimed at teens and adults and lists no volume cap, so it is better suited to older users.
Yes. It includes a 3.5mm cable for wired listening, plus a Micro SD/TF card slot and FM radio, so you can use it even with a dead battery or a device that has no Bluetooth.
No. They are wired over-ear headphones with a 3.5mm jack, so there is no battery to charge and nothing to pair. You just plug them into a phone, tablet, PC or any device with a headphone port.
Both use 40mm dynamic drivers with a 20Hz–20kHz range, so the hardware is comparable. PowerLocus has the advantage of wireless freedom and a mic, while EarFun S1 keeps volume at a safe 85dB for children — a deliberate trade of loudness for hearing protection.
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