Kiwi Ears Belle Review: A Pretty Solid Start
Jin Soh
Kiwi Ears has built a solid reputation across the mid to high-end IEM space, from the affordable, single driver Cadenza to the Orchestra II with its ten balanced armature drivers that we previously reviewed. Following the latter, the brand is now going back to basics with the Belle, its most affordable entry-level offering to date.
What Is It?

The Belle is built around Kiwi Ears’ custom 10mm Diamond-Like Carbon dynamic driver, housed in a resin shell with a CNC-machined metal faceplate that’s quite a nice touch for the price. Each earpiece comes in at less than 4g, making the Belle one of the lightest IEMs you can pick up at this tier.
In the box alongside the Belle and cable are six pairs of narrow bore silicone ear tips in two varieties: three pairs of white transparent tips and three pairs of black opaque ones, both available in small, medium and large. The included two-core silver-plated 2-pin cable is equally featherlight, terminating in either 3.5mm or USB-C depending on your preference. Our unit, sent over by Kiwi Ears, is of the latter.

The Belle’s resin shells are on the smaller side, which is a relief for those who struggle with the increasingly chunky housings that have become common in the Chi-Fi space. For smaller ears, the fit should be secure and comfortable without the pressure that larger shells can cause.
On my larger ears, however, the Belle sits a touch loose, requiring a deeper insertion than I would typically prefer alongside the largest stock ear tips to achieve a proper seal. Even then, isolation was only adequate. Switching to larger third-party ear tips improved the situation, tightening the seal and bringing passive isolation up to a more usable level. Fit is always subjective, but those with larger ear canals may want to consider a set of aftermarket tips alongside the Belle.
How Does It Sound?

The Belle leans toward a slight V-shaped signature with a warm overall presentation and a clear sub-bass emphasis. Soundstage width is decent enough but depth is intimate, keeping the presentation closed-in. On busier tracks, the limited staging can work against the Belle, with the sound becoming congested and muddy when things get complex.
Bass

The Belle’s sub-bass is what immediately stands out upon first listen. Extension is deep and impact is satisfying, with a rumble that comes through without tipping into boom. Mid-bass is punchy but lighter in weight compared to the sub-bass and is not particularly tight, bleeding into the midrange and contributing to a low end that is overall not especially fast or resolving.
There is enough punch here to make casual listening enjoyable and to appeal to newcomers to the hobby, but experienced listeners will notice the lack of detail in the bass and dedicated bassheads will find the impact insufficient.
Mids

The midrange takes a back seat but is not overly recessed. Male vocals come through with a relatively natural timbre, sitting comfortably in the mix. Female vocals are a touch thin and lacking in note weight despite the warmth creeping in from the low end, giving them a slightly hollow quality. Detail in this region is satisfactory but overall average at best.
Treble

The treble is smooth, perhaps too smooth. Upper mids are mercifully free from shoutiness or harshness, which keeps fatigue at bay, but the high end overall lacks air, brightness and the kind of sparkle that gives music its sense of energy and life. This is not a resolving set by any stretch, with a notable absence of detail in the upper frequencies that will be felt most on tracks that rely on crisp texture and presence.
Is It Worth It?

The Belle is Kiwi Ears’ entry-level option and it presents itself as such. It’s a competent listen with a fun, warm character that will appeal to casual listeners and those new to the hobby, but in a Chi-Fi market where budget IEMs routinely punch well above their asking price, the Belle does little more than meet expectations for its tier.
Those after better-tuned competition at a similar or lower price point should look at the 7Hz x Crinacle Zero 2, which offers more balanced tuning at roughly half the price. The Tangzu Wan Er SG2, another option, brings better packaging and accessories to a similar bracket, with a more treble-forward tuning as an alternative for those who find the Belle’s low-end emphasis too dominant.

Again, the Belle is still a capable pair of earphones at an affordable price point. The Type-C option does also come with a built-in microphone, making it a convenient option for calls on your smartphone that you can just toss in your bag without a worry.