We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-03 · 7 min read · Independent comparison
If you want a single USB-C pair with an actual warranty and a modern connector, choose LUDOS Zenith USB C; if you need two pairs of budget 3.5mm buds that work with older gear, choose SKLNXAZ 2. Those are genuinely different jobs, and the specs make the split pretty obvious.
• LUDOS Zenith USB C — biggest strength: USB-C connectivity for current phones, tablets and laptops, plus a 5-year warranty and touch controls on a single pair.
• LUDOS Zenith USB C — biggest trade-off: No 3.5mm jack and only one pair in the box, so older or jack-only devices are out of luck.
• SKLNXAZ 2 — biggest strength: Two pairs of 3.5mm wired earbuds with an inline mic and volume control, aimed at computers, MP3/MP4 players and most 3.5mm audio devices.
• SKLNXAZ 2 — biggest trade-off: 3.5mm only, plastic build, and no stated warranty — nothing here plugs into a USB-C phone without an adapter.
• Who each pick is for: LUDOS for anyone who wants one reliable USB-C pair for a modern phone or tablet; SKLNXAZ for households, desks and older devices that still live on the 3.5mm plug.
The Zenith is a wired USB-C in-ear set, which is the whole point of it. There's no wireless mode, no dongle, no pairing screen — you plug the cable into a USB-C port and audio comes out. For anyone who's tired of Bluetooth pairing quirks, that's the appeal: it just works every time you connect it.
Look at what's actually in the spec sheet and a clear picture forms. It's a single pair in the box, in a pink TPE (thermoplastic elastomer) enclosure, with dynamic drivers rated 20Hz–20,000Hz and 32 ohm impedance. That impedance figure matters more than it sounds: 32 ohm is friendly to phones, tablets and laptops, so you don't need a headphone amp to get usable volume out of them. The frequency range is the standard full-range spread you'd expect at this tier — nothing exotic, but nothing missing either.
Controls are split between touch and a button, with call control called out specifically, so answering and ending calls from the cable is part of the design intent. Sound isolation is listed as the noise control method, which means the seal of the in-ear tips is what blocks outside noise — there's no active noise cancellation here, and you shouldn't expect any.
So who should buy it? Anyone whose daily driver is a USB-C device — a recent iPhone, an iPad, a Galaxy S-series phone, a laptop — and who wants one pair they won't lose track of. The 5-year warranty is the standout line in the whole sheet; that's an unusually long coverage window for earbuds, and for a wired pair it signals the maker expects the cable and housing to hold up. It's also the pick if you want a specific color rather than generic black.
Who should skip it? If your main listening happens on a PC with a 3.5mm jack, an older phone, or a handheld console, this is the wrong connector. And if you want a spare pair for a bag or a partner, one pair in the box won't cover you.
The SKLNXAZ 2 is a two-pack of 3.5mm wired earbuds. That "2" in the name is the actual feature here — you get two identical pairs, which changes who this product is for far more than any single spec does.
Technically, it's straightforward. In-ear, plastic enclosure, white, 3.5mm jack, wired only, 20Hz–20,000Hz frequency range, push-button controls with an inline microphone and volume control. The listing describes hands-free calling without unplugging anything, light splash and sweat resistance, and compatibility with computers, MP3/MP4 players, Android devices and most 3.5mm audio gear. It's also listed as MFi certified, which is relevant if you're plugging into Apple devices that still carry a 3.5mm jack.
Note what's absent: no impedance figure, no stated warranty, and a very light item weight (0.03 kg) that tells you the build is minimal. This is not a product sold on materials or longevity claims. It's sold on utility, quantity and low commitment.
Buy it if you need earbuds in more than one place — one pair at the desktop, one in a backpack, one for a kid's tablet or a school laptop. The age range covers kids and adults, and a two-pack is genuinely useful for families where buds get lost or fought over. It's also the right call if your devices are older: a 3.5mm plug fits a huge back catalogue of phones, computers, MP3 players and handhelds that USB-C simply doesn't.
Skip it if you're on a USB-C-only phone with no adapter, if you want a warranty to lean on, or if you care about build materials. And skip it if you want volume control on the device itself — the controls here are on the cable, push-button style.
Side-by-Side: Which Should You Choose?
• Best for older devices and computers → SKLNXAZ 2. The 3.5mm jack covers desktops, MP3/MP4 players and most legacy audio gear.
• Best for warranty confidence → LUDOS Zenith USB C. A 5-year warranty is stated; the SKLNXAZ sheet states none.
• Best for households, kids and spares → SKLNXAZ 2. Two pairs in one box, rated for kids and adults.
• Best for calls on a phone → LUDOS Zenith USB C. Call control is a named feature with button and touch operation.
• Best for sweat and light splashes → SKLNXAZ 2. Its description calls out resistance to light splashes and sweat; the LUDOS sheet lists sound isolation only.
• Best for a specific color choice → LUDOS Zenith USB C. Pink is stated; SKLNXAZ is white.
• Best for driver transparency → LUDOS Zenith USB C. Dynamic drivers at 32 ohm and 20Hz–20,000Hz are specified; SKLNXAZ lists the frequency range but no impedance or driver type.
In my opinion, the LUDOS Zenith USB C is the better buy for most people today, and it's the one I'd pick. The reason isn't sound — both list the same 20Hz–20,000Hz range — it's everything around it: the connector that matches current devices, the named call control, the specified 32 ohm impedance that tells you a phone can drive it, and above all the 5-year warranty, which is the strongest durability signal in either sheet.
I'd only steer you to the SKLNXAZ 2 if your devices are 3.5mm, or if you specifically want two pairs to scatter across a house, a desk and a bag. For that job it's a sensible, low-risk pick — just don't expect it to plug into a USB-C phone without help.
One practical note before you decide: check the current price on Amazon for both, since that can shift the math. Compare it against what each one actually gives you — one warranted USB-C pair versus two basic 3.5mm pairs — and pick the one that matches the ports you own.
how to unpair headphones from all devices
This only applies to Bluetooth headphones — neither the LUDOS Zenith USB C nor the SKLNXAZ 2 is wireless, so there's nothing to unpair. Both are wired: the connection is the cable. Unplugging is the full disconnect. If you're trying to clear a Bluetooth device from your phone or laptop, that's done in the device's Bluetooth settings menu, not on the earbuds.
how to disconnect headphones from all devices
With wired earbuds like these two, disconnecting is physical. Pull the USB-C plug from the LUDOS Zenith, or the 3.5mm plug from the SKLNXAZ 2, and audio routes back to the device's speakers. There's no pairing list, no "forget device" step and no reconnection delay. That simplicity is one of the real advantages of wired over wireless.
how to make headphones forget all devices
Again, this is a Bluetooth concept and doesn't apply here. Neither product stores device pairings, because neither pairs. They're plug-and-play. If you want a set that holds no memory of your devices at all, a wired pair like either of these is the most literal answer to that.
how to listen to two devices at once with headphones
Neither the LUDOS Zenith USB C nor the SKLNXAZ 2 supports multi-point or simultaneous playback — they're single-connection wired sets. To hear two sources at once you'd need a mixer or an adapter that combines two inputs into one plug. If you just want to switch between two devices, unplug from one and plug into the other.
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