How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-08 · 9 min read · Independent comparison
• ZXQ USB C Headphones — best for long wired study sessions on a USB-C phone or tablet; pick this if you want an angled in-ear with a full in-line controller and a storage case instead of a dongle.
• Jiunai USB C Headphone — best for carrying in a bag and taking calls; pick this if you want magnetic earpieces that snap together, a smart DAC chip and a zippered case.
• Letshuoer S12 — best for critical listening at a desk; pick this if you want a 14.8mm planar magnetic driver, a detachable silver-plated cable and a proper 4.4mm balanced plug.
• boAt Airdopes 411ANC — best for noise control without wires; pick this if you want active noise cancellation up to 25 dB, ENx call clarity and fast charging.
This is a straightforward wired USB-C in-ear in grey plastic, and that simplicity is the point. There's no battery to think about, no pairing, no charging case to remember at 7am — you plug it into a USB-C port and it works. For a library that's genuinely useful, because the last thing you want is a dead earbud twenty minutes into a study block.
The 10mm dynamic driver is tuned for rich bass, detail and clear voice, which suits the way most people actually study: spoken-word audio, lecture recordings, lo-fi playlists, a bit of everything. The 45-degree angled nozzle is the detail I like most here. An angled earpiece sits in the ear canal more naturally, so it stays put when you shift in your chair, reach for a book or walk between the stacks. Four pairs of silicone tips in different sizes, coated so they're comfortable and dust-resistant, mean you have a decent chance of finding a real seal — and a real seal is what passive noise cancellation actually depends on. It's a passive design, so isolation comes from the fit, not electronics.
The in-line controller is a volume up/down remote plus a microphone, so you can pause, skip and take a call without touching your phone. The omnidirectional mic sits near your mouth on the cable, which helps in a quiet room where you don't want to raise your voice. The 1.25m cable is tangle-resistant, and there's a small semi-transparent storage box so the tips and buds don't end up loose in your tote.
Two trade-offs worth knowing. First, compatibility isn't universal — it relies on a digital decoding chip and works with a long list of USB-C phones and tablets, but some devices can behave differently depending on their system, so check your model against the listed compatibility before buying. Second, there's no active noise cancellation and no wireless mode; if you need to block a noisy café or move around freely, look further down this list.
Jiunai USB C Headphone
The Jiunai is the other wired USB-C option here, but it solves different problems. Where the ZXQ leans on fit and a volume remote, the Jiunai leans on portability and call quality. The earpieces are magnetic, so they snap together and hang around your neck instead of dangling — a small thing that matters a lot when you're moving between a desk, a printer and a shelf with an armful of books.
The remote handles volume, music and phone calls, and the microphone is designed to capture voice accurately on chats and video calls and to trigger voice assistants. There's an ENx-style claim in the spec sheet about clear voice capture — worth taking as a design intent rather than a promise, but the hardware is there. You get three pairs of silicone tips and a mini zipper carry case, and the design is deliberately battery-free, so there's nothing to charge.
My main reservation is the cable. A wired neck-hanging set is great until the cable catches on a chair arm or a bag strap, and there's no wireless fallback if the connector or cable gets damaged. It's also an in-ear with sound isolation rather than active noise cancellation, so it won't erase a noisy environment — it just reduces it. If you mostly sit still and want a compact wired set you can toss in a bag, this is a strong fit.
The S12 is a different category of product, and it deserves to be described as such. This is a wired in-ear built around a 14.8mm planar magnetic driver — the same family of technology used in high-end headphones — and the spec sheet is specific about what that buys you: high detail retrieval, potent bass, crisp mids and clear trebles. Frequency response runs 20 Hz to 30 kHz, wider than the other wired sets here.
Sensitivity is listed at 102 dB/mW with 16 ohm impedance, so it can be driven to reference levels from a small portable device or a USB DAC/amp without much effort. In practice, that means one set that handles whatever you throw at it — dense classical, bass-heavy electronic, spoken word — without sounding strained.
The build is the part that stands out for daily use. The chassis is milled with a 5-axis process, so the outline is one continuous curve with no hard edges at the seams, and it's lightweight enough to live in a bag. The shape is moulded to sit in the concha, and there are two vent holes drilled into the sides to relieve pressure inside the ear — that's the detail that makes long listening sessions comfortable rather than fatiguing, and it's also a hearing-comfort feature. The matte finish resists ear wax, which keeps it looking sharp.
The cable is detachable, using a 0.78mm dual-pin connector, woven from 128 strands of silver-plated monocrystalline copper, thick, soft and shielded against interference, and it ships with either a 3.5mm or a 4.4mm balanced plug. You also get foam, standard and clear tips in S/M/L, a faux-leather case, a manual and a warranty card.
Here's the honest trade-off: this is a specialist tool, not a general-purpose commuter earbud. There's no microphone, no in-line remote, no active noise cancellation and no wireless. If you need to take a call in the library, this isn't the set for you. And a 4.4mm balanced connector needs a source that supports it — if you're plugging straight into a phone with a 3.5mm jack, order the 3.5mm version. For focused desk listening on a laptop or a dedicated player, though, it's the most capable option in this group.
The Airdopes 411ANC is the only true wireless set here, and it's the one to look at if wires are the thing you hate most. Active noise cancellation cuts up to 25 dB, which is meaningful in a library — it's the kind of reduction that takes the edge off an air-conditioning hum, distant conversation or a keyboard clatter without needing to crank your volume up.
Battery is the headline for a study session. You get up to 17.5 hours of playback without ANC and up to 16 hours with it on, and fast charging gives you 60 minutes of playback from a 10-minute charge. That's the spec I'd actually lean on: if you forgot to charge overnight, ten minutes at a power outlet on the way in buys you an hour of quiet. Total charge time is around 1.5 hours.
Call quality is handled by ENx technology, which is a voice-isolation approach aimed at keeping your voice clear on calls — relevant if you're stepping out of the reading room to take something. Controls are touch-based with voice control support, and the box includes the TWS earphones, two additional ear tips, a cable and a user manual. The driver is listed as a balanced armature type, and the colour is Grey Hurricane.
The trade-offs are the usual TWS ones, plus a couple specific to this model. ANC costs you a little playback time, so you're choosing between 16 and 17.5 hours depending on how you run it. Touch controls on a small bud can be fiddly until you learn them, and it's easier to trigger a command by accident than with a physical button. And because it's wireless Bluetooth, you're dependent on a charged battery — the opposite trade-off from the wired sets above.
We compared the published specifications and feature lists for each set — driver type and size, impedance, sensitivity, frequency range, connector, controls, microphone, cable and included accessories — and weighed them against the job people actually buy grey earphones for: quiet, focused listening in a library or study space. The ordering reflects our independent editorial opinion about which design suits which listener. No brand paid for placement, and nothing here was chosen on price.
FAQ
Only the boAt Airdopes 411ANC has active noise cancellation, rated up to 25 dB. The ZXQ, Jiunai and Letshuoer S12 rely on passive isolation — that is, how well the ear tip seals your ear canal. A good seal from the right tip size does a lot of the work.
The ZXQ and Jiunai are USB-C, so they suit USB-C phones and tablets — check your specific model against the compatibility lists, since some devices can behave differently depending on their system. The Letshuoer S12 comes with a 3.5mm or 4.4mm plug, so pick the one your source supports. The boAt is Bluetooth, so it pairs with anything that supports Bluetooth audio.
No. The ZXQ, Jiunai and boAt Airdopes 411ANC all include microphones for calls. The Letshuoer S12 does not — it's built for listening, not voice.
For library use specifically, my recommendation stays with the ZXQ USB C Headphones: the angled fit, four tip sizes, in-line volume remote and included case make it the most practical wired set to live with day after day.
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