How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a bright, detail-forward hybrid IEM with a stainless-steel faceplate and a genuinely upgrade-friendly cable system, choose Linsoul KZ ZS10; if you need a bass-rich, stage-ready monitor that ships with two cables and a mountain of eartips, choose BASN MMCX.
• Linsoul KZ ZS10 — biggest strength: a 4BA+1DD five-driver hybrid setup with a PCB dividing board, tuned for a bright, high-extended, detail-heavy sound.
• Linsoul KZ ZS10 — biggest trade-off: it's a wired-only, touch-control design with no inline remote on this version, so calls and volume tweaks aren't part of the package.
• BASN MMCX — biggest strength: a 2DD+1BA triple-driver tuning built around deep bass, shipped with two detachable MMCX cables plus 12 pairs of eartips.
• BASN MMCX — biggest trade-off: it's the physically heavier option and the fit depends heavily on you working through that eartip pile to get a proper seal.
• Who the KZ ZS10 is for: listeners and gamers who want maximum driver count, an all-metal faceplate, and a bright, analytical signature.
• Who the BASN MMCX is for: drummers, gigging musicians and bass-first listeners who want a warm low end and stage-friendly accessories.
The KZ ZS10 Pro is, on paper, the more ambitious design of the two. It packs five drivers per side — two 30095 balanced armatures for highs, two 50060 armatures for mids, and a 10 mm second-generation Tesla double-magnetic dynamic unit for the low end. That's a lot of hardware, and the addition of a PCB dividing board is the detail I'd point to first: it's the crossover hardware that decides how much work each driver actually does. Without it, a five-driver count is mostly marketing. With it, the claim of "dynamic lows and bright resolution" at least has a mechanism behind it.
The rest of the build leans practical. The faceplate is 304 stainless steel while the cavity is imported resin, so you get a metal front with a lighter body behind it. The nozzle-side ergonomics are molded from cochlea data, and Linsoul rates the isolation at up to 26 dB — enough to take the edge off a bus, a plane cabin or a noisy open-plan office, though not enough to replace proper hearing protection. Impedance is 24 ohm with 111 dB sensitivity, which means it'll get loud off a phone or a cheap dongle without demanding a desktop amp.
Who should buy it? In my opinion, the KZ ZS10 suits two groups. First, gamers and detail-chasers who want to pick out footsteps, gunshots and small mix elements — the high-frequency extension is rated out past 40 kHz, and the bright tuning is aimed squarely at that. Second, tinkerers. The 0.75 mm gold-plated detachable cable with a limit-slot protection design means you can swap cables without worrying as much about bending pins, and Linsoul even suggests trying a different cable for a sound change. If you enjoy that kind of hobbyist fiddling, this is your lane.
Who should skip it? Anyone who wants to take calls or nudge volume from the cable. This version ships without a mic, and the controls are touch-based rather than an inline remote. Also skip it if you want a warm, thick, bass-forward sound — this is the brighter, more analytical of the two.
The BASN MMCX takes the opposite approach. Instead of chasing driver count, it runs two dynamic drivers plus one balanced armature, and the whole tuning story is bass. Two dynamic drivers doing low-frequency work generally means more air moved and more physical punch than a single dynamic unit, and BASN leans into that: "powerful and stronger bass burst" is the headline claim, with a low end described as rich and a high end described as delicate and supple rather than extended or aggressive.
The accessory loadout is where this one genuinely separates itself. You get two detachable MMCX cables, each 1.5 m — one with an inline remote and mic for volume and calls, one upgraded silver cable for straight listening. You also get 12 pairs of eartips total (nine silicone, three memory foam), a hard carrying case, a T-shirt clip, a cleaning brush and a 1/4-inch adapter. That's a complete gig bag in one box. The memory earhooks are adjustable, which matters more than people expect: an over-ear hook that actually bends to your ear shape is the difference between a monitor that stays put through a two-hour set and one that keeps sliding out.
Who should buy it? Drummers and stage musicians first — the name says it, and the accessory list backs it up. The 1/4-inch adapter alone tells you BASN expects you to plug into a monitor system or interface, not just a phone. Second, bass-first listeners who find bright IEMs fatiguing and want vocals to sit forward on a thick low end.
Who should skip it? Anyone who wants the lightest possible fit. At 0.35 kg for the package, this is the heavier option, and the seal depends on you experimenting with eartips — which is exactly why BASN ships so many. If you won't spend five minutes finding the right pair, you won't hear what it can do.
• Best for driver count and technical detail → Linsoul KZ ZS10. Five drivers with a dedicated crossover board versus three.
• Best for bass depth and physical punch → BASN MMCX. Two dynamic drivers are dedicated to the low end.
• Best for gaming and positional audio → Linsoul KZ ZS10. The bright, high-extended tuning is aimed at hearing small cues, and the "Video Game" theme confirms the intent.
• Best for stage and studio monitoring → BASN MMCX. Two cables, a 1/4 adapter, a clip and a hard case are all monitoring accessories.
• Best for taking calls → BASN MMCX. It includes a mic cable with an inline remote; the KZ ZS10 version here has no mic.
• Best for build materials → Linsoul KZ ZS10. 304 stainless steel faceplate versus a plastic enclosure on the BASN.
• Best for fit flexibility → BASN MMCX. 12 pairs of eartips and adjustable memory hooks let you dial in the seal.
• Best for cable tinkering → Linsoul KZ ZS10. The 0.75 mm gold-plated connector with pin protection is built for swapping.
• Best for low-impedance, easy-to-drive listening → BASN MMCX. 18 ohm versus 24 ohm means it needs slightly less power for the same volume.
If I were buying one, I'd take the Linsoul KZ ZS10. In my opinion the five-driver hybrid with a real crossover board, the stainless steel faceplate and the protected detachable cable give you more headroom to grow — you can change cables, chase detail, and use it for gaming and critical listening without it feeling like a one-trick set. The BASN MMCX is the better single-purpose tool: if your job is holding down a rhythm section or you simply want deep bass and a box full of accessories, buy the BASN and don't overthink it. Otherwise, the KZ ZS10 is the pick I'd stand behind.
how to fit in ear headphones
Push the tip into your ear canal and twist slightly so it seals — a shallow fit leaks bass and kills isolation. The BASN MMCX makes this easier because it includes 12 pairs of eartips plus adjustable memory earhooks, so you can match the tip and hook to your ear shape. The KZ ZS10 relies on its cochlea-derived molded cavity, rated for up to 26 dB of isolation, so getting the angle right matters there too.
how to clean in ear headphones
Wipe the nozzles and tips with a dry cloth or a soft brush, and pull the eartips off periodically to clear wax from the sound bore. The BASN MMCX package actually includes a cleaning brush for exactly this. Never run water through a wired IEM — the KZ ZS10's 0.75 mm connector and the BASN's MMCX sockets are both metal contacts you want to keep dry.
how to open in ear headphones
Neither of these is designed to be opened by the user — both are sealed hybrid designs, and prying the shells apart will damage the drivers and void the KZ ZS10's one-year warranty. What you can open is the cable connection: the KZ ZS10 uses a 0.75 mm gold-plated detachable cable with a limit-slot design, and the BASN uses MMCX connectors. If you need service, contact the manufacturer rather than opening the housing.
how to ear headphones
If you mean wearing them over your ears, both are over-ear style: the cable routes up and over the top of your ear, then down behind it. The BASN's adjustable memory earhooks hold that shape for you, while the KZ ZS10 relies on the molded resin cavity to stay put during movement. Either way, the cable-over-ear routing is what keeps the monitors from tugging loose mid-song.
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