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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a wired in-ear with an inline mic, remote controls and a wide, immersive soundstage for everyday listening and calls, choose SoundMAGIC E80C; if you need a tunable, detachable-cable in-ear with a hard DLC diaphragm and swappable nozzles for critical listening and gaming, choose KGUSS KEFINE Klean HiFi.
• SoundMAGIC E80C — biggest strength: a flagship-tuned 10 mm dynamic driver paired with a full aluminum housing, a 3-button inline remote and a built-in mic, so it handles music, calls and volume control in one cable.
• SoundMAGIC E80C — biggest trade-off: the cable is fixed, and its 64 ohm impedance plus 102 dB sensitivity means it leans on a decent phone or dongle to sound its best; there is no detachable cable or tuning option.
• KGUSS KEFINE Klean HiFi — biggest strength: a 10 mm dynamic driver with a Diamond-Like Carbon diaphragm and a dual-cavity structure, plus two interchangeable stainless steel nozzles and a 0.78 mm 2-pin silver-plated cable you can swap out.
• KGUSS KEFINE Klean HiFi — biggest trade-off: its noise control is listed as none, and the mic/Type-C variant is the only configuration described here, so it is less of a plug-and-forget everyday headset and more of a tuning-friendly IEM.
• Who each pick is for: the E80C suits commuters, callers and anyone who wants one cable to do everything; the Klean suits listeners who want to shape their own sound and upgrade cables later.
The E80C is SoundMAGIC's flagship in-ear, and the spec sheet reads like it: a custom 10 mm dynamic driver, a frequency range of 15 Hz to 25,000 Hz, 64 ohm impedance and 102 dB sensitivity. That combination points to an in-ear that wants a little power behind it but rewards you with the kind of three-dimensional soundstage the brand describes as its headline feature. In practical terms, this is the pair you reach for when you want the music to feel wider than your head — delicate details up top, vocals sitting clearly in the middle, and bass that stays accurate rather than bloated.
What makes it genuinely convenient is the rest of the package. There is a 3-button inline remote for volume, playback and call management, plus a built-in mic, so you can answer a call mid-commute without touching your phone. The housing is full aluminum with a metallic finish, which suggests it will shrug off the knocks of daily bag life far better than a plastic shell. You also get silicone tips in S, M and L, and the in-ear design provides passive noise isolation — enough to take the edge off a train or an open-plan office. It ships with a hard plastic carrying case and a tangle-free cable.
Who should buy it: anyone who wants one wired headset for everything — music on the way to work, hands-free calls, running or gym sessions where a secure, lightweight fit matters, and long listening sessions where comfort is non-negotiable. It is also a sensible pick for iPhone or Android users who want to wake Siri or Google Assistant from the remote.
KGUSS KEFINE Klean HiFi: Who It's For
The Klean takes a different route to the same 10 mm driver size. Instead of tuning one signature and locking it in, it gives you choices. The diaphragm is made from Diamond-Like Carbon, one of the hardest and lightest materials used in audio, which the brand says extends high frequencies and keeps the sound transparent and clean. Behind that sits a dual-cavity driver structure meant to keep the acoustic performance consistent from track to track — powerful bass, warm mids, smooth treble.
The real party trick is the pair of interchangeable threaded stainless steel nozzles. The silver nozzle gives a warm, smooth presentation; the black nozzle pushes resolution and a brighter, more transparent character. Swapping them takes seconds, and because the nozzles are replaceable, they also resist clogging over time, which is a quiet but real longevity win for an in-ear you plan to keep.
Build is another strong point on paper. The housing is precision alloy casting, with the front housing and back panel secured by screws rather than adhesive — a deliberate choice to stop the shell separating after years of use or a hard knock. The cable is a high-purity silver-plated copper design with 108 wires (18 × 3 × 2), and it terminates in a standard 0.78 mm 2-pin connector, so aftermarket cables are fair game if you want to chase a different sound later. Impedance is 32 ohm and the frequency range is 20 Hz to 20 kHz, which makes it easier to drive from a plain phone or laptop than the E80C.
Who should buy it: tinkerers and gamers. If you enjoy A/B-ing a warm tuning against a brighter one, or you like the idea of upgrading a cable down the line, this is built for you. The lower impedance also makes it a friendlier match for modest sources.
Who should skip it: if you want a one-and-done headset with volume buttons on the cable and strong passive isolation for commuting, the Klean's lack of noise control and its tuning-first design make it a worse fit. It is aimed at listening, not at being a phone headset first.
Side-by-Side: Which Should You Choose?
• Best for tuning flexibility → KGUSS KEFINE Klean HiFi. Two interchangeable nozzles give you a warm, smooth sound or a brighter, higher-resolution one from a single pair.
• Best for cable upgraders → KGUSS KEFINE Klean HiFi. The 0.78 mm 2-pin detachable silver-plated cable opens the door to aftermarket options; the E80C's cable is fixed.
• Best for easy driveability → KGUSS KEFINE Klean HiFi. At 32 ohm it asks less of a phone or laptop than the E80C's 64 ohm.
• Best for soundstage and dynamics → SoundMAGIC E80C. Its flagship 10 mm driver is tuned around an expansive, three-dimensional stage with a 15 Hz–25,000 Hz range.
• Best for isolation on the move → SoundMAGIC E80C. The in-ear fit plus S/M/L silicone tips delivers passive noise isolation; the Klean lists no noise control.
• Best for long-term build confidence → both, for different reasons. The E80C uses a full aluminum housing; the Klean uses screw-secured alloy casting instead of adhesive.
• Best for comfort over long sessions → SoundMAGIC E80C, thanks to its lightweight ergonomic fit and three tip sizes — though the Klean's contoured shell is also described as matching the ear.
In my opinion, the SoundMAGIC E80C is the pair I would buy for most people. It does the everyday jobs — music, calls, volume control, isolation, a tough aluminum shell — without asking you to think about anything, and its 10 mm driver is tuned for exactly the wide, immersive presentation most listeners actually want.
I would only steer you to the KGUSS KEFINE Klean HiFi if you enjoy tuning. The DLC diaphragm, dual-cavity driver, swappable nozzles and detachable 2-pin cable make it the more interesting long-term project, and its 32 ohm impedance is easier to drive. If you like to fiddle, that is the one. If you just want to press play, take the E80C.
what is 10mm driver earbuds
A 10 mm driver is the diameter of the dynamic speaker inside the earbud. Both the SoundMAGIC E80C and the KGUSS KEFINE Klean HiFi use a 10 mm dynamic driver, which is a common size for in-ears because it can move enough air for solid bass while still fitting comfortably in the ear.
is 10mm driver good for earbuds
Yes — 10 mm is a well-established size for in-ear monitors and is what both of these models use. What matters more than the number is the tuning and materials around it, which is why the E80C focuses on soundstage and the Klean uses a DLC diaphragm and a dual-cavity structure.
is 6mm driver good for earbuds
A 6 mm driver is on the small side and generally moves less air, so it tends to suit compact buds where fit matters more than low-end weight. Neither of the two models compared here uses a 6 mm driver; both are 10 mm, which gives them more headroom for bass and dynamics.
Not necessarily, but its 64 ohm impedance and 102 dB sensitivity mean it benefits from a clean source with some output. A phone or laptop will drive it, but a small dongle DAC will get more out of it. The KGUSS KEFINE Klean HiFi, at 32 ohm, is the easier of the two to drive.
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