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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-21 · 7 min read · Independent comparison
• KZ ZEX Earbuds 1 – biggest strength: A hybrid electrostatic + dynamic driver setup with a huge 20Hz–40kHz frequency range, aimed at detail and soundstage rather than convenience.
• KZ ZEX Earbuds 1 – biggest trade-off: Wired-only, no microphone on this variant, touch controls that are basic (media control, no noise cancelling), and a fit that assumes you care about tip selection.
• Lenovo – biggest strength: Plug-and-play 3.5mm simplicity with a separate inline microphone, a play/pause button, and three sizes of ear tips for an easy fit.
• Lenovo – biggest trade-off: A single 9mm dynamic driver with a 20Hz–20,000Hz range and plastic build — functional, not audiophile-grade.
• Pick KZ ZEX Earbuds 1 if you're an audio engineer, musician, gamer, or detail-chasing listener who wants wired fidelity and doesn't need a mic.
• Pick Lenovo if you want an inexpensive, no-fuss headset for calls, video meetings, podcasts, and casual music on any 3.5mm device.
The KZ ZEX Earbuds 1 is a purpose-built in-ear monitor. Its headline feature is the hybrid driver array: a 6.8mm low-voltage electrostatic unit paired with a 10mm dual-magnetic dynamic unit. In plain terms, the dynamic driver handles the low-end punch while the electrostatic unit takes over the upper frequencies where air and detail live. KZ rates the sensitivity at 103dB with a 25-ohm impedance, and the frequency range stretches from 20Hz all the way to 40kHz — well beyond the 20kHz ceiling most consumer earbuds stop at. Whether you can hear that last octave is debatable, but the point is the tuning headroom is there.
The build is where this thing punches above its class on paper. The housing is cast zinc alloy combined with imported resin, finished in rose gold, with a seamless, streamlined contour. That's a metal-and-resin shell, not a hollow plastic tube. The cable is a detachable 2-pin silver-plated flat cable, which does two things: it resists tangling and pulling, and it lets you swap cables later if one fails. For a wired IEM, a detachable cable is the single most useful longevity feature you can ask for.
Lenovo: Who It's For
The Lenovo 110 Analog in-Ear Headphones are the opposite philosophy: strip it down, make it work everywhere, keep it cheap and simple. You get a 3.5mm jack that plugs into basically any phone, laptop, tablet, or desktop with a headphone port — no drivers, no adapters, no pairing. Lenovo explicitly frames these as "enterprise-grade" headphones designed for productivity on the go, and the feature set backs that up.
The standout feature for that use case is the separate in-line microphone, which Lenovo says provides better voice pickup than a mic crammed into the earbud housing. There's also a multi-functional in-line play/pause button, so you can answer a call or stop your audio without digging out your phone. Inside, a 9mm dynamic driver handles the sound with 32-ohm impedance and a 20Hz–20,000Hz range — standard full-range coverage, tuned (per Lenovo) for loud, clear sound with punchy bass. The housing is plastic in grey, and the package includes three sizes of ear tips plus a blue carrying case.
Who should buy it? Anyone who spends their day on calls and video meetings, students, commuters, or people who just want a spare headset that lives in a bag and always works. The inline mic and play/pause button make it a genuinely practical conferencing tool. Who should skip it? If you care about soundstage, driver technology, or upgradeable cables, this isn't that product. It's a single dynamic driver in a plastic shell with a fixed cable. That's not a flaw for its intended job — it's just a different job.
• Best for sound detail and soundstage → KZ ZEX Earbuds 1. The hybrid electrostatic + dynamic array and 20Hz–40kHz range are built for resolution, not casual listening.
• Best for calls and voice pickup → Lenovo. The separate in-line microphone and play/pause button are made for meetings and phone calls; the KZ variant here has no mic at all.
• Best for build quality → KZ ZEX Earbuds 1. Zinc alloy plus resin beats a plastic enclosure if durability and feel matter to you.
• Best for plug-and-play simplicity → Lenovo. No tip-rolling required, three ear tip sizes included, and it works instantly on any 3.5mm device.
• Best for musicians, engineers and gamers → KZ ZEX Earbuds 1. The detachable 2-pin silver-plated cable and monitor-style tuning are aimed at exactly these users.
• Best for the office and everyday commuting → Lenovo. Lightweight at 22.68g, with a 1-year warranty and a straightforward wired design that won't distract you.
• Best for cable longevity → KZ ZEX Earbuds 1. A detachable cable means a broken wire doesn't kill the whole set.
• Best for low-risk everyday use → Lenovo. Simple, universal, and built for productivity rather than critical listening.
In my opinion, if your priority is sound quality and you're willing to live with a wired, mic-less setup, I'd buy the KZ ZEX Earbuds 1. The hybrid driver design, the 20Hz–40kHz range, the zinc alloy and resin shell, and the detachable silver-plated cable are the features of a serious monitoring tool rather than a throwaway headset — and for musicians, engineers, and detail-focused listeners, that combination is the whole point.
But I wouldn't recommend it to everyone. If you take calls, join meetings, or just want something that plugs in and works, the Lenovo is the smarter pick. Its inline mic, play/pause button, and universal 3.5mm compatibility make it the more practical daily driver. Two different tools for two different jobs — pick the one that matches how you'll actually use it. Either way, check the current price on Amazon before you commit, since that's the one variable that can flip the decision.
FAQ
Yes. The Lenovo 110 has a separate in-line microphone plus a multi-functional play/pause button. The KZ ZEX Earbuds 1 variant listed here is the "Without Mic" version, so it has no microphone.
The Lenovo. Its in-line mic and play/pause button are built for exactly that, and the 3.5mm plug works with any compatible device without drivers or adapters. The KZ is a monitor-style IEM with no mic, so it's the wrong tool for calls.
Yes. It uses a detachable 2-pin connector, so you can swap the included silver-plated flat cable if it wears out. The Lenovo's cable is fixed and not user-replaceable.
Both rely on passive isolation from the ear tip seal. The KZ uses an ergonomic cavity contour with rounded tips for a noise-isolating fit; the Lenovo includes three ear tip sizes and lists sound isolation as its noise control. Neither has active noise cancelling.
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