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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want maximum device compatibility with a phone that hates USB-C audio, choose Rayhontech USB C; if you need a high-impedance, DAC-driven earbud built for clean digital sound and all-day calls, choose KENSUKA USB C.
• Rayhontech USB C — biggest strength: an enormous compatibility list (iPhone 16/15, Galaxy S25 down to S20, Pixel, OnePlus, iPad, MacBook) plus a metal-housed 10 mm dynamic driver, three silicone tip sizes, a fabric case, an extra ear tip set, and a USB-A-to-C adapter in the box.
• Rayhontech USB C — biggest trade-off: it's a 32 ohm, 110 dB design that leans on sensitivity rather than a dedicated DAC chip, and on iPhone 15/16 you have to flip a "Reduce Audio Loudness" setting before calls work properly.
• KENSUKA USB C — biggest strength: a built-in digital DAC chip paired with a 120 ohm impedance, which points to a design aimed at clean, low-noise digital audio and sharp calls rather than brute loudness.
• KENSUKA USB C — biggest trade-off: a shorter 4-foot (1.2 m) cable, no adapter or case mentioned, and a narrower feature list overall — it's the simpler, more focused package.
• Who each pick is for: Rayhontech for the multi-device household that wants accessories in the box; KENSUKA for the single-phone user who cares about the digital audio chain and call clarity.
The Rayhontech USB C is, at its core, a "just make it work everywhere" earbud. The compatibility list is genuinely long — iPhone 16 and 15 series, the Galaxy S25/S24/S23/S22/S21/S20 lines, Note 20 and Note 10, the A-series, Z Flip and Z Fold, Pixel, OnePlus, iPad, and MacBook Air/Pro. If your household has a mix of Android phones, an iPad, and a laptop, that breadth matters more than any single spec.
The hardware is more thoughtful than the price-point stereotype suggests. The audio driver is a 10 mm dynamic driver, the enclosure is metal with a TPE cable, and the cable is described as surviving a 30,000-plus bend test. The 32 ohm impedance and 110 dB sensitivity mean it's easy to drive — a phone's built-in output will push it to loud levels without strain. You get a fabric carrying case, an extra set of small and large silicone tips (three sizes total), and a USB-A-to-C adapter, which quietly solves the "my laptop only has USB-A" problem.
Where it asks something of you is the iPhone caveat. On iPhone 15 and 16, the headset can't make calls until you go into Settings → Sound and Haptics → Headphone Security and turn on "Reduce Audio Loudness." That's a one-time fix, but it's the kind of thing that frustrates people who don't read the fine print. Buy it if you want one wired USB-C earbud that covers a drawer full of devices and comes with its own accessories. Skip it if you're only ever plugging into one phone and want the simplest possible setup.
The KENSUKA USB C takes a different route: it leans on a digital DAC chip rather than raw sensitivity. That chip is the headline feature — it's the component responsible for converting the USB-C digital signal into analog sound, and KENSUKA positions it as the reason for the "powerful bass, clear mids, crisp highs" and static-free calls. Paired with a 120 ohm impedance, this reads like a design meant to be fed by that onboard DAC rather than by a phone's analog headphone amp.
In practice, that combination usually translates to a slightly more controlled, less hissy presentation than a bare-bones dongle-style earbud — especially on calls, where a clean digital path cuts down on the buzz and clicks people complain about most. The in-line remote handles play/pause, track skipping, volume, and answer/end, so you rarely touch the phone. Fit is handled with three sizes of soft silicone tips and a lightweight ergonomic shell, and the cable is a 4-foot (1.2 m) tangle-free cord — shorter than some, but fine for pocket use.
The trade-offs are real. There's no mention of a carrying case, an adapter, or an extra tip set beyond the three sizes, and the 1.2 m cable is on the short side if you like to leave your phone on a desk while you move around. The noise control is listed as passive, meaning isolation comes from the silicone seal, not electronics. Buy it if you want a focused, DAC-driven earbud for calls and music on a phone or laptop with USB-C. Skip it if you need maximum reach, bundled accessories, or the widest possible device list.
• Best for device compatibility → Rayhontech USB C. The list covers iPhone 16/15, Galaxy S25 through S20, Pixel, OnePlus, iPad, and MacBook, which is about as broad as USB-C audio gets.
• Best for digital audio design → KENSUKA USB C. A dedicated DAC chip plus 120 ohm impedance is a more deliberate audio chain than a sensitivity-driven 32 ohm design.
• Best for call clarity on the go → KENSUKA USB C, in my opinion. The DAC chip is specifically tied to static-free calling, and the in-line remote keeps controls at your fingertips.
• Best for accessories in the box → Rayhontech USB C. Fabric case, extra silicone tips, and a USB-A-to-C adapter come standard.
• Best for cable length and desk use → Rayhontech USB C. Its TPE cable is built around a 30,000-plus bend lifespan and isn't described as short, whereas KENSUKA's is a fixed 1.2 m.
• Best for plug-and-play simplicity → KENSUKA USB C. No settings to change, no adapter to keep track of — just plug in and go.
• Best for iPhone 15/16 buyers who want calls to work → Rayhontech USB C, if you'll do the one-time settings change; otherwise KENSUKA is the less fiddly option.
• Best for a mixed-device household → Rayhontech USB C. One pair covering an Android phone, an iPad, and a laptop is hard to beat.
If I were buying for myself, I'd take the Rayhontech USB C. Not because it's the more exotic design — it isn't — but because the metal-and-TPE build, the 10 mm dynamic driver, the three tip sizes, the fabric case, and the included USB-A-to-C adapter make it the more complete, more forgiving purchase for someone who owns more than one USB-C device. The one-time iPhone setting is a fair annoyance, but it's solvable.
That said, if your world is a single USB-C phone and you care most about a clean digital signal and dependable calls, the KENSUKA USB C is the more purposeful pick, and the DAC chip is a legitimate reason to choose it. Check the current price on Amazon before deciding — the gap between them may settle it for you.
Neither is universally better. Rayhontech wins on compatibility and bundled accessories; KENSUKA wins on the digital audio path thanks to its DAC chip and higher 120 ohm impedance. It comes down to how many devices you're plugging into.
Yes — KENSUKA lists iPhone 17, 16, and 15 series compatibility, and the DAC chip handles the digital-to-analog conversion. Rayhontech also supports those phones but requires a one-time "Reduce Audio Loudness" settings change for calls.
Both rely on the silicone seal for isolation rather than active electronics. Rayhontech calls it sound isolation, KENSUKA calls it passive noise cancellation — functionally the same idea, so fit with the right tip size matters more than the label.
No case or adapter is listed for KENSUKA — just the headphones with three silicone tip sizes. Rayhontech includes a fabric case, extra ear tips, and a USB-A-to-C adapter.
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