Kiwi Ears KE4 VS Kiwi Ears Aether

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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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Think big planar energy: fast, deep sub-bass, a touch of sparkly treble, and a surprisingly speaker-like scale for a single 15.3 mm planar. The stage feels wide and “outside the head,” delivering that easy, expansive presentation without shoving details in the face. It’s the most relaxed-sounding planar IEM vibe—still quick and clean, but mellow enough to binge Pink Floyd, Prodigy, or movie soundtracks without fatigue.

The shells are huge yet comfy (no “wing of death”), with a gray stone-slab faceplate sprinkled in color and a metal rim—gorgeous in a low-key way. Stock cable is soft and usable but 3.5 mm only; thankfully it’s 2-pin, so a balanced swap wakes things up nicely. Isolation is decent despite a few vents, and the set proves easy to drive while still scaling with better sources. Packaging goes full silver overkill: neat tips selection and a pocketable case that does the job.

Value lands hard: street pricing around $150–170 makes this an under-$200 no-brainer for anyone craving planar speed with a big, airy, non-shouty presentation. The Aether stands out as unique in the planar crowd—wide yet fast, smooth yet detailed, with real sub-bass grunt—equally at home for late-night albums, action flicks, or a long flight.

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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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Kiwi Ears Aether arrives as a ~$170 planar with a classy, comfortable shell that seals well despite its larger size and visible venting. The accessories are familiar—typical Kiwi Ears case, okay tip selection—while the cable feels like a real upgrade: soft, pliable, and tidy with a solid 3.5 mm termination. Fit can be great, but smaller ears should note the chunkier housing.

Sonically, Aether leans neutral-bright with a clean midrange, airy treble, and standout micro-detail retrieval for the price. There’s adequate measured bass, yet the added brightness trims some perceived slam, so it’s not for bassheads. Compared with earlier Kiwi planars, it feels more tonally correct, carrying that planar crispness without the shout or glare that often trips sets up around the mid-treble.

In A/Bs, Aether trades blows with Aöso: the latter reads a touch better tuned, but Aether pulls ahead in technicalities—micro-nuances, textural cues, “whispers.” Melody is warmer but less accurate; S08 is darker and cheaper but less balanced; S12 variants push more 5–6 k energy; MP145 is impressive yet bulkier. Overall, Aether scores roughly an 8/10 with a clear note: choose it for a mid-focused, detailed presentation and excellent value in the planar field, skip it if the priority is big bass weight.

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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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The Kiwi Ears Aether brings a balanced tuning with a thumpy, well-textured low end, clean vocals, and airy treble. Its large planar driver behaves with a DD-like timbre—more grounded than the typical light, floaty planar feel—so bass hits are punchy yet quick, with no bleed into the mids. Vocals sit naturally (neither shouty nor recessed), and the midrange reads clean and well-layered. Up top, extension and micro-detail are strong without fatigue; there’s a touch of extra sparkle that makes the set slightly brighter-leaning without turning sizzly.

As a mid-volume listen (~65 dB), Aether scales well: energetic K/J-pop or rock/metal with busy cymbals may ask for a notch down, while alt-pop, hip-hop, R&B, indie, and ballads benefit from the clarity and control. Versus smoother planars like Timeless 2, Aether trails slightly in sheer timbre naturalness but returns with a bit more treble detail and overall snap; compared with nozzle-tuned rivals, it threads a cleaner, better-extended middle ground. At around $170, its technical performance and planar bass that doesn’t sound planar make for compelling value—slotting neatly between bass-heavy and leaner sets, delivering texture, impact, and clarity without harshness. Recommended.

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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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Kiwi Ears Aether hits with a 15.3 mm planar that feels more like a compact headphone than an IEM—big, airy, and unapologetically wide. Bass is unmistakably planar-fast with real sub-bass reach, while the top end adds a little sparkle without turning shouty. The midrange stays clean and clear, giving that “speaker-like” scale that makes Pink Floyd, Prodigy, or film scores feel expansive rather than congested.

Build and ergonomics lean large but smart: a roomy shell (no dreaded “wing of death”) that seems to help the staging, a tasteful stone-gray faceplate with pops of color, and a soft, flexible stock cable—nice, though it’s 3.5 mm only. Isolation is decent for a mostly closed design with discreet vents, and the set proves easy to drive, yet still scales audibly with a balanced cable and a solid source. Tip rolling shifts the flavor from relaxed and silky to a touch more forward; either way the presentation stays smooth, wide, and fast.

Value seals it: after guessing around $220 on sound and presentation, the real-world street price sits roughly in the ~$150–$170 bracket, making this an easy recommendation under $200. Aether stands out among planars for being big, relaxed, and immersive rather than in-your-face—great for music benders and late-night movies alike. Unique tuning, legit sub-bass, and that effortless planar snap put it firmly on the short list.

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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.

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Kiwi Ears Aether lands as a standout at the $150 mark: a single large planar driver in a comfy, 3D-printed resin shell that can be worn for 8+ hours without fuss. The faceplate looks premium, the nozzle size is easy, and the sonic profile is smooth, clean, and engaging. Bass is punchy yet controlled—never bloated, never overly warm—while the stage sits in that gaming sweet spot: not too close, not too far. For music, it’s a crisp, non-fatiguing listen with clean mids and technical, tidy low end.

In games, Aether brings the goods: footsteps are elevated with urgency, imaging feels holographic (including vertical cues), and separation/layering remain intact when the action heats up—decisively clearer than Etude and Atheia. Across titles—CoD, Apex, Valorant, Siege, CS, Fortnite, Rivals—it consistently reads space and depth, only giving up a sliver of micro-detail in the densest, high-rank lobbies. That’s why it earns a B+ (borderline A-) on the WallHack Certified list. Astral at $300 still adds that last bit of clarity, but Aether is the top pick under $150; even compared to the Orchestra Lite, it’s similarly capable, more comfortable, and better value.

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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.