Gizaudio x Binary Chopin VS Kiwi Ears KE4

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Initial skepticism about yet another reviewer collab IEM quickly evaporates, as the Gizaudio x Binary Chopin is declared a standout, potentially the best collab IEM in years and even an all-time favorite. For a $200 hybrid IEM from a relatively unknown company, it delivers a performance that is really, really good, making it an exceptionally exciting and competitive offering in its price bracket.

Physically, the Chopin is a bit of a mixed bag with an awkward, truncated teardrop shape, but it scores points for its compact overall size. The main fit consideration is the wide nozzle, which requires a secure ear tip for stability since the entire fit depends on the ear tip coupling with the canal. The included cable is praised for being simple, lightweight, and highly functional with a secure chin slider.

Where the Chopan truly shines is its sound. While its graph looks similar to the lackluster Truthear Nova, the Chopan's significant deviation with meatier bass provides a welcome sense of heft and body, making the entire presentation more enjoyable. The mid-range is clean and vocals are fantastic, coming across crisp and well-isolated. However, the star of the show is the outstanding treble, described as sharp, incisive, and possessing a great sense of weight that outperforms not just its competitors but even more expensive sets. It is declared superior to legendary IEMs like the Moondrop Dusk and the 7Hz Timeless, making it a full five-star product and an easy recommendation.

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Kiwi Ears KE4 is a $200 hybrid (2DD+2BA) that showcases the so-called “new meta” tuning—more body in the lower mids and a calmer lower treble versus the Harman Target. Packaging is simple: a pocketable case and bespoke silicone tips (usable, though even shorter tips can improve comfort). The cable handles well but feels a bit thin/kinky with heat-shrink earhooks, and the shells look plain, prototype-like. Fit is secure and comfy with a semi-custom shape, albeit a touch thick, so they can protrude from the ear.

Sonically, KE4 delivers a warm, low-contrast midrange that makes vocals sound natural and well-placed, with a pleasant mid-treble “frothiness” adding texture. Bass quantity leans on the mid-bass, but quality is the weak spot—soft/bloomy and a bit poofy, lacking density and punch, which can dull drive on bass-heavy tracks. Imaging is decent, treble is safe and balanced (not sharp or dark), and overall technicalities are respectable without chasing wow-factor.

Against peers: Truthear Hexa mirrors the new-meta mids with tighter, better-controlled bass; AFUL Explorer is more engaging with tighter slam and slightly crisper treble; the Harman-leaning Binary Chopin brings the best bass attack. KE4 is a strong choice for vocal-first listening and a clear example of the new meta, but the bass bloom can hold it back across a broad library. Verdict: a very solid 4/5 stars.

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The Gizaudio x Binary Chopin IEM is an absolute standout, delivering a fantastically unique and immersive sound signature that is heavily focused on vocals. The presentation is spectacularly detailed, making any vocal track, from opera to pop, slam you in the eyeballs in the best way possible. The soundstage is its most intriguing feature; it doesn't sound wide or narrow but instead creates a phantasm-like effect where the music seems to wrap around and even behind your head, a phenomenally cool and different experience.

This is achieved through a hybrid driver setup of a single 8mm dynamic driver for a natural and impactful low end, plus three balanced armatures handling the mids and highs. The package is exceptionally well-presented with a clean box and a professional-looking case. It also comes bundled with the Divinus Velvet tips, which are so smooth they are considered the best pairing for this IEM and are almost mandatory for the intended experience.

Priced at $200, the Chopin is 100% worth it. The build quality extends to its cable and the smallest two-pin connectors ever seen, and the overall tuning is simply fantastic. It’s a refreshingly different IEM that avoids any painful treble or recessed mid-range, making it an easy, highly recommended pick for anyone looking for something special that excels with vocal-centric music.

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Kiwi Ears KE4 is a 2DD + 2BA hybrid touting an isobaric subwoofer system and “sub-bass impact and slam.” The reality doesn’t match the brochure: the $200 package feels plain—simple box, basic case, few tips, and a generic 3.5 mm cable—while the tuning comes across as safe to a fault. Marketing promises of kick drum thump and bass guitar presence give way to a presentation that’s competent but uninvolving.

On music, the low end skews mushy rather than tight, transients lack bite, and the overall tone reads flat—the kind of “waiting-room” vibe that prompts a double-check of DSP settings. Even with a strong seal from premium tips, energy and excitement refuse to show up; it’s “fine ingredients, bland dish.” Technicals aren’t a disaster (it’s not unclear), but fun factor feels negative, recalling ultra-neutral sets like Softears Studio 4S that impress more than they engage. Verdict: about a 6/10 (maybe 7/10 on a generous day), with better value found in a cheaper Kiwi alternative at roughly half the price—skip the KE4 if musical thrill is the goal.

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The Gizaudio x Binary Chopin presents a unique value, particularly for those who typically prefer speakers or over-ear headphones. Its greatest strength is its extreme comfort and easy fit, making it ideal for long gaming or music sessions without the pressure buildup common with other IEMs. Sonically, it boasts a very good quantity of bass and exceptional vocals that really pop in the mix.

However, the Chopin is not without its weaknesses. The quality of the bass is not world-class, and it can lack some air and sparkle in the highs. The most significant complaint is in the technicals of instruments, which can sometimes sound a bit muffled, unresolving, and odd in their tonality and timbre compared to the standout vocals.

When compared to the TruthEar Nova, the Chopin is found to be livelier and more musical, with warmer, richer lows, while the Nova is drier and more clinical with slightly better highs. Both are considered technical benchmarks at their respective price points. The Symphonium Meteor, meanwhile, is deemed overpriced and its bass is noted as being too overpowering, making the music sound off despite its small, comfortable shell.

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Build & accessories: understated box, a surprisingly nice cable with a “juicy” feel and flat 2-pin connectors, plus extra filters. The stock tips are the weak link—thin out note weight and feel downright horrific, so a tip swap is recommended. The medium-to-large shell is a highlight: secure fit, comfy nozzle size, and a handsome faceplate that looks premium in ear. Overall ergonomics and finish scream daily-driver friendly.

Sound: impactful, well-judged bass, lively upper mids, and a touch of upper-air jank; for $200 it’s a strong value with a clean, modern JM1-style tuning. Easily the most convincing Kiwi Ears to date: more balanced and natural than Quintet (which pushes upper mids/10 kHz energy), far more sensible than the treble-shouty Forteza, a clear upgrade over budget options like DLS and the tiny, poorly packaged Singolo, and less fatiguing than the bass-and-upper-mid heavy Melody. Against $200 benchmarks, KE4 becomes a new reference—cleaner male vocals and better build than “Chopin,” and a tighter low end plus tidier mids than AFUL Performer 5. Trades blows with Hype 4 at a fraction of the price; those craving a pricier step-up in the same vein can eye HiSenior Mega5EST. Measured verdict: Tier A, 3-star, 8.8 for tone—good imaging, solid soundstage, gamer-friendly, not flawless but genuinely excellent once re-tipped. A handsome, comfortable set that delivers outstanding value for newcomers and gift-givers alike.

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The Gizaudio x Binary Chopin is positioned as a more authoritative and engaging take on the familiar Harman target. It features a pronounced sub-bass that fills in the typical scoop without overdoing it, providing more slam and weight than predecessors like the Nova or Hexa. This gives the low end more authority, preventing it from sounding anemic, though it doesn't reach the subwoofer-like physicality of sets like the EA1000. The mid-range remains very clear, uncolored, and well-separated, benefiting from the extra mid-bass to sound fuller than the Nova while maintaining a correct tonal balance with no bias toward male or female vocals.

The upper mids and treble are where the Chopin really differentiates itself, coming across as a more engaging and lively version of the Nova. A boost in the 5k and 10k regions adds excitement and liveliness, creating a more open and airy stage. This makes it reminiscent of the Simgot EA1000 but much smoother overall. When compared to other sets, it's a clear upgrade over the Nova and bests competitors like the Performer 5 and EM6L with its better resolution and treble extension without low-end sacrifice. It's also a smoother, more weighted alternative to the Heyday and a more affordable option that delivers about 85% of the performance of the Moondrop Variations.

Ultimately, the Chopin is a smoother all-rounder that makes the standard Harman target less boring. It's a highly competitive set that sounds cleaner than the Kiwi Ears Hype 2 with a less pronounced bass that better highlights the mid-range, though the Hype 2 retains an advantage in bass texture for genres like EDM and hip-hop. The choice between them becomes library-dependent, but the Chopin stands out as a very well-tuned and compelling option in its price range.

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Kiwi Ears KE4 plays a warm-leaning, smooth and relaxing set at mid volume with slightly laid-back vocals and a good sense of space. The real trick is volume scaling: turn it up and the upper-mids/treble step forward with more detail without becoming shouty, while the bass grows thumpier and digs deeper. A 1 kHz scoop plus a tasteful ~3 kHz lift (gentler than Harman) keeps vocals extended yet non-fatiguing; the trade-off is vocal power/weight, which stays a touch mild compared to sets like RS5.

Driven by dual dynamic drivers, the KE4’s low end is among the best under $200 for texture, slam, and note weight, making the tuning feel full and grounded. It’s not as razor-quick in transients or as surgical in imaging as certain planars or techy hybrids, but the payoff is a more natural timbre. Treble sits in a balanced pocket—neither splashy nor dark—with none of the plasticky shimmer or planar/PZT glare.

Against peers: Supermix 4 and Quintet (and even the cheaper “Conta”) push more micro-detail and separation; Orchestra Light is the cleanest/most neutral but softer in bass and more complete in vocals. Versus CKLVX and PULA, KE4 trades their airy, sometimes peaky sparkle for a smoother, more grounded presentation and richer bass grip. Compared with Explorer, KE4 offers a clear step up in technicalities and low-end authority, while Explorer stays more intimate. Net: not the new “benchmark” at $200, but as a crank-it-up, musical all-rounder with standout bass and fatigue-free top end, KE4 is an easy favorite.

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Kiwi Ears KE4 drops at $199 and comes across as the best-tuned Kiwi Ears yet. Unlike the Orchestra Lite with its sub-bass roll-off or the budget Cadenza that skews a bit dark, this set keeps the sub-bass present and tight. Compared to the Dolce (energetic with more mid-bass) and the Quintet (politer bass, lighter upper-mids/late treble), KE4 adds more slam while smartly tucking the mid-bass so vocals stay clean. It’s a tuning that both looks right on the graph and lines up with real-music listening across hip-hop/R&B, rock, and acoustic cuts.

Low-end tests—808 drops and bass-guitar lines—hit clean and natural, and kick-drum transients keep their body instead of drying out. Female vocals get clarity without mid-bass haze, while male vocals avoid thinning—nicely balanced through the mids. The treble is managed with some late-treble roll-off, avoiding glare while preserving harmonic bite for guitars and cymbals over longer sessions. Net result: no qualifiers, no obvious weak spot, and performance that competes hard at $199. Easy recommendation and a frontrunner for the brand’s lineup to date.

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$199 hybrid with 2DD+2BA, the Kiwi Ears KE4 pairs a glossy, translucent faceplate with an ergonomic 3D-printed resin shell for all-day comfort. The stock 3.5 mm cable is light and flexible, the new silicone tips seal well, and spare filters are included. Sonically it follows the diffuse-field “new meta” tuning popularized by sets like Moondrop x Crinacle Dusk, Dunu Da Vinci, and Mega5 EST—but arrives as the most affordable in that crowd. Tonality leans a touch warm with a smooth upper-mid/treble that keeps gunshots from sounding harsh; for music, the presentation feels immersive and lively at the price.

For competitive play, performance varies by title. In Valorant: B, horizontal imaging and depth cues are convincing, and footstep “thumps” pop through clearly, aiding reaction time. In Apex Legends: B–, basic imaging and map awareness are fine, but busy fights expose separation/layering limits and a slight haze to light taps and micro-details. In Call of Duty: C+ (borderline B–), clarity and detail retrieval dip during chaotic moments and the game’s occlusion/breathing effects mask cues more than preferred. Overall, a stylish, comfortable DF-tuned IEM that’s great for music and a solid pick for Valorant, but not the first choice for top-tier Apex/CoD grinders—though it still makes the Wallhack Certified list.