While there’s a new IEM made in collaboration with HawaiBadBoy (HBB) in what seems like every month or so, it’s been awhile since we last heard from fellow audio YouTuber Z Reviews. Well, it appears Zeos from Z Reviews isn’t sitting idly, as proven by a partnership with Chi-Fi brand Juzear. The result – the Juzear x Z Reviews Defiant.
What Is It?
The Defiant is a four-driver hybrid IEM featuring a 1DD + 3BA configuration, combining a 10mm dynamic driver with three custom-tuned balanced armature drivers. Our review unit was kindly provided by HiFiGO, where the Defiant is available for purchase at USD99 (around RM430).
But what makes the Defiant stand out right away is its build and presentation. The shells are made from DLP 3D-printed resin, providing a highly contoured and ergonomic fit, while the faceplates are CNC-milled and accented with polished nickel – adding a bit of industrial flair to the otherwise soft, organic shape.
We have the Rainbow version in hand, which features a mesmerizing metallic sheen that shifts between purple and blue under light – reminiscent of heat-treated metal or the lustre of mother-of-pearl. The Juzear logo is etched on both faceplates, while Z Reviews’ branding appears subtly on the right shell.
What ties the whole design together is the Flare Cable. This isn’t your typical bundled cable – in fact, Juzear sells it separately for USD39 (roughly RM170). It’s a 6N SPOCC + SCCW hybrid with six cores, offering a smooth, slightly slick finish that resists tangling and avoids microphonics. Ours came in the same matching purple-blue candy tones as the earphones – a surprisingly cohesive look for something at this price point. By default, it terminates in 3.5mm, but the box also includes a swappable 4.4mm balanced plug, which is a very welcome bonus.
Even the unboxing experience is a pleasant surprise. For just 100USD, you get a leather-esque hardshell case, a generous selection of eartips (wide-bore, narrow-bore, and foam), a cleaning cloth, and a novelty Z Reviews standee. It’s an accessory set that feels considered and complete – something we don’t say often for IEMs in this bracket. Props to Juzear for putting in the effort.
Fit-wise, the Defiant is very comfortable, sitting flush in the ears with a nozzle length and angle that ensures a stable seal in my ears. No issues with long listening sessions here.
How Does It Sound?
The Juzear x Z Reviews Defiant goes for a clean, mild V-shaped tuning, with a somewhat relaxed, laid-back presentation. What’s surprising is that, despite being a Z Reviews collab – and one might expect something thunderous or exaggerated in the low-end – the tuning is more restrained and polite than you’d think.
Bass
The bass is punchy and well-contained, though it doesn’t dig especially deep or slam with much authority. It delivers decent sub-bass presence without sounding bloated, and mid-bass hits with enough impact for casual listening. It’s not a basshead IEM by any means, but it also doesn’t feel lacking – just… measured. It adds warmth and body to the sound without overwhelming the rest of the mix.
Mids
The mids come across as clean and lightly rendered, with vocals that feel natural but on the leaner side. There’s no veil or congestion here, but the note weight can feel a touch thin, especially on male vocals or instruments like piano and cello. It’s not the most emotional or engaging midrange out there – more of a relaxed, low-fatigue tuning that leans technical rather than lush. Still, clarity is commendable, and layering is decent considering the price.
Highs
Treble is smooth and inoffensive, with no harsh peaks or sibilance. It’s a tuning that feels safe – perhaps a bit too safe, especially for those who crave a bit of sparkle or shimmer in their IEMs. There’s some early roll-off that results in a slight lack of air and detail up top. Cymbals and strings are resolved cleanly but without much bite or sparkle. On the plus side, this makes the Defiant extremely easy to listen to over long sessions, with zero treble fatigue.
Soundstage & Imaging
One pleasant surprise is the depth of the soundstage. The Defiant creates a fairly wide presentation with good front-to-back layering, which helps separate instruments and makes it feel more open than expected. Imaging is solid, with accurate placement for vocals and instruments, though it doesn’t reach the pinpoint precision of higher-end hybrids.
Is It Worth It?
At USD100, the Juzear x Z Reviews Defiant finds itself in a very competitive space – but it manages to carve out an identity with its unique design, strong accessory package, and relaxed tuning. In my opinion, this is likely one of the most complete pair of collaboration IEMs so far within the Chi-Fi space. Well done, Z Reviews.
Sure, it’s not the most exciting-sounding IEM out there, and treble lovers or fans of hard-hitting bass might find it a bit too tame. But if you want something that’s easy on the ears, well-built, and visually striking with a matching premium-feeling cable, the Defiant is absolutely worth considering.
It’s a reminder that not every IEM needs to wow you with sheer intensity – sometimes a more measured, mellow approach is all you need.