Monday, September 7, 2026

KZ AS24 Earbuds Review 2025 – Are These Custom-Tuned IEMs Really Worth Buying?

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Available to buy here:

https://amzn.to/4oi5Ifa

Welcome back to Reviews Inside TV, where we get hands-on with the tech that promises to reshape how you hear, see, and experience your world. Today, we’re tuning into something that’s already creating a buzz in the audiophile community—the KZ AS24 Earbuds with Microphone. These aren’t your average earphones. KZ claims to have engineered them with a reimagined electronic frequency division system and an advanced reed design to deliver authentic Hi-Fi sound. But how do they actually hold up when you plug them in? Let’s unpack that.

At first glance, the KZ AS24 looks striking with its transparent resin shell, revealing the intricate multi-driver setup inside. Each earbud houses twenty-four balanced armature drivers—twelve per side—divided through an enhanced electronic frequency division system. This means that lows, mids, and highs are all handled by different driver groups, promising cleaner separation and more natural tonality. KZ also included something called the “Trident” reed—a new structure positioned precisely between the magnets to enhance sound density and minimize distortion. On paper, that’s a big deal for sound purity. But what really sets these apart are the tuning switches. There are two per ear—one on the top and one on the side—each offering four levels of control. You can tweak low, mid, high, and ultra-high frequencies manually, giving you sixteen possible tuning combinations. It’s a feature rarely found at this price point and one that’s meant to give listeners total control over their sound signature. For comfort, the cavity was modeled using ear data from countless users, aiming for a natural fit. The shell is lightweight, skin-friendly, and surprisingly ergonomic for something packed with this much hardware.

Setting them up is simple—they’re plug-and-play through a detachable 2-pin cable. Right out of the box, they feel solid and premium without being bulky. When testing them across multiple scenarios—studio mixing, gaming, casual music streaming, and even calls—the tuning flexibility became the standout feature. In their default configuration, the AS24s produce a clean, balanced sound with clear midrange vocals, tight bass, and a smooth, extended treble. But flip a few switches, and it’s like swapping earphones entirely. Want deeper bass for hip-hop or cinematic audio? Dial it up. Prefer analytical detail for studio work? Roll off the lows and boost the mids. The responsiveness of these tuning options is impressive—they’re not gimmicky sliders but genuine sound-shaping tools.

Now, if you’re into immersive listening, these deliver a wide soundstage with decent depth. Instrument separation is excellent, which makes live recordings and orchestral pieces sound vibrant and natural. During testing, I paired them with a high-quality DAC to push their limits, and they responded beautifully—revealing micro details in acoustic and jazz tracks that budget earphones typically blur together. However, when connected directly to a phone without an amplifier, some of that depth gets lost, especially in bass-heavy tracks. These earbuds really shine when powered by a proper source.

Of course, it’s not all perfection. The tuning switches, while powerful, can feel a bit fiddly. You’ll need a small tool or pin to adjust them safely, and without a clear guide, it’s easy to forget which combination you’re using. The included cable, though decent, doesn’t match the premium feel of the earphones themselves—it’s prone to tangling and could use an upgrade if you’re serious about audio fidelity. On the flip side, the comfort is genuinely impressive. Even after long sessions, the lightweight resin never felt fatiguing. They seal well, block out ambient noise, and stay snug without slipping.

Before I go any further, if you’re enjoying this deep dive and want more honest tech reviews that cut through the marketing noise, make sure to hit that like button, subscribe, and tap the bell icon so you never miss what’s next on Reviews Inside TV.

When it comes to value, the KZ AS24 positions itself in the mid-tier audiophile bracket—well below brands like Campfire Audio or Moondrop’s higher-end models, yet offering surprisingly close performance. For around the same cost as models like the CCA CRA+ or the Tin HiFi T5, the AS24 outclasses both in customization and sheer driver count. It doesn’t necessarily destroy competitors in every area—its tuning switches give it versatility, but not everyone wants to tinker. If you prefer plug-and-play simplicity, you might lean toward a set with a fixed tuning that’s been professionally balanced. But if you enjoy crafting your sound, this is where the AS24’s value really kicks in—it’s like owning multiple IEMs in one shell.

Comparing them to direct rivals like the Moondrop Aria 2, the Aria offers a more relaxed, natural tonality right out of the box but lacks the same degree of tweakability. Meanwhile, the TRN VX Pro gives a similar multi-driver setup but leans more aggressively into treble, which some find fatiguing. The AS24 strikes a clever middle ground—offering studio-level tuning potential without the ear-piercing highs or overdone lows that plague some competitors.

Build quality is another area where KZ deserves credit. The transparent resin shells not only look professional but feel sturdy enough to withstand daily use. The faceplate fits securely, and there’s no sign of uneven seams or loose parts—a common issue with lower-tier IEMs. The lightweight nature doesn’t make them feel cheap; instead, they feel refined and practical. While there isn’t long-term data on durability just yet, KZ’s track record for reliable builds in their mid-range models like the ZS10 Pro and AS16 Pro suggests these should hold up well with proper care.

As for customer support, KZ’s reputation is mixed but improving. They’re responsive to warranty claims, though communication can vary depending on the retailer. Most users report timely responses through official channels, and replacement parts like cables and ear tips are easy to source online, which helps in the long run.

When everything’s considered, the KZ AS24 earbuds stand out as one of the most customizable Hi-Fi options in their price range. They offer real flexibility for sound purists, a comfort level that makes long sessions enjoyable, and a build that feels far more premium than their cost suggests. They’re not the most straightforward choice for casual users, and they demand a bit of tweaking to unlock their full potential—but that’s part of their charm. For those who love to tailor their sound and hear every nuance, the AS24 is an impressive achievement.

Thanks for watching Reviews Inside TV. If you want to check out the KZ AS24 Earbuds, you’ll find the link in the comments box below. I’d love to hear your thoughts—are customizable IEMs like this something you’d actually use, or do you prefer something simple and ready to go? Drop your opinions below. Until next time, keep your ears open and your volume just right—this is Reviews Inside TV, signing off with sound that speaks for itself.

Available to buy here:

https://amzn.to/4oi5Ifa

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