64 Audio U4S VS AFUL Dawn-X

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The 64 Audio U4s hits a compelling sweet spot: a 1DD+3BA hybrid around $1,100 that echoes the lush, bass-tilted character of the Nio while fixing key drawbacks. Packaging and accessories feel improved, with multiple tip options and the included M12 APEX module; APEX not only tailors bass but also relieves pressure for long sessions. Fit follows 64 Audio’s comfortable triangular shell; the vented DD asks for a slightly shallower insert than the all-BA models. Sonically, expect a sub-bass-oriented shelf and a treble profile that’s more lively and “zingy” than the Nio, with extra energy around the upper treble. The big caveat is 64 Audio’s muted 2–4 kHz region, which can set soprano vocals a step back on the stage.

Against the brand’s full-BA staples (think U12t/U6t), the U4s trades some pinpoint imaging and coherency for unmistakable DD slam and tactile “air pushing.” Extension at both ends is excellent, with upper-treble energy that makes micro-detail and reverb trails pop. It’s not the clean, conventional neutrality of something like a Monarch-style tuning; rather, it’s a deliberate, colored signature that delivers fun plus technical chops. Crucially, it fills a missing niche at its price and, in many respects, outperforms the pricier Nio, making the U4s a standout recommendation for listeners who want bass authority, sparkle, and engaging dynamics without going all-in on the flagship tier.

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AFUL’s house sound shows up here in its most polished form: Dawn-X is a tribrid (1DD + 8BA + 4EST + bone conduction) flagship at $1,300 that prioritizes consistent fit and execution over flash. Build is understated with stabilized-wood faceplates, above-average isolation, and a medium/medium-large shell that fits better—and more consistently—than the Cantor. The accessory loadout is solid (four silicone tip sets, large but well-made case), though the stock cable does not have swappable terminations (choose 3.5 mm or 4.4 mm).

Tonally, it’s a balanced, warmer-leaning take on AFUL’s signature: a dense, controlled bass that borders on decadent yet stays quick and clean, slightly relaxed mids, and a precise, mildly forward lower-treble that keeps definition high without tipping into harshness for most listeners. Stage favors front-to-back depth over width; transients are clean and a touch clinical, giving strong separation without sounding smeary. The result is a mature, confident presentation that reads refined rather than showy.

Against peers: versus Cantor, Dawn-X is warmer, smoother, and far more consistent thanks to fit; Cantor can sound brighter and a bit wider. Compared with FiiO FX17, Dawn-X has tighter bass and crisper treble, where FX17 feels looser and fuller. The 64 Audio U4s plays softer and wider; Dawn-X is more precise/clinical. DUNU Glacier hits harder and more V-shaped with smoother treble but less natural acoustic timbre; Dawn-X sounds truer on instruments. Versus ThieAudio Monarch MK4, MK4 is more neutral, vocal-forward with greater width, while Dawn-X offers denser low-end and a calmer demeanor—and a friendlier fit for many ears. Verdict: 3/5 stars—not the flashiest in its bracket, but arguably AFUL’s best execution yet of its signature sound.

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Large, sculpted shells with a bulbous rear (housing the bone conductor) make the Aful Dawn-X a substantial fit—comfortable for some, but risky for small ears. The stock cable feels quality but is 4.4 mm-only, and the case/accessories are tidy; importantly, the nozzle grips tips securely (unlike some past AFUL sets). Overall build is handsome and premium, with fit being the main variable.

Sonically, the tuning favors sub-bass over mid-bass, pairs rich mids with smooth, natural treble that avoids harsh spikes yet has mild 4–6 kHz energy, and presents a cohesive, almost speaker-like soundstage. It wakes up with a bit of volume/power, prioritizing clarity, micro-detail and air over outright slam; the bone conductor subtly supports the midrange more than the lows. At $1,300 it’s competitive for listeners chasing technical refinement and a natural tonality, while value seekers or mid-bass lovers may prefer cheaper AFUL options or sets with more punch.

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The 64 Audio U4s hits a compelling sweet spot: a 1DD+3BA hybrid around $1,100 that echoes the lush, bass-tilted character of the Nio while fixing key drawbacks. Packaging and accessories feel improved, with multiple tip options and the included M12 APEX module; APEX not only tailors bass but also relieves pressure for long sessions. Fit follows 64 Audio’s comfortable triangular shell; the vented DD asks for a slightly shallower insert than the all-BA models. Sonically, expect a sub-bass-oriented shelf and a treble profile that’s more lively and “zingy” than the Nio, with extra energy around the upper treble. The big caveat is 64 Audio’s muted 2–4 kHz region, which can set soprano vocals a step back on the stage.

Against the brand’s full-BA staples (think U12t/U6t), the U4s trades some pinpoint imaging and coherency for unmistakable DD slam and tactile “air pushing.” Extension at both ends is excellent, with upper-treble energy that makes micro-detail and reverb trails pop. It’s not the clean, conventional neutrality of something like a Monarch-style tuning; rather, it’s a deliberate, colored signature that delivers fun plus technical chops. Crucially, it fills a missing niche at its price and, in many respects, outperforms the pricier Nio, making the U4s a standout recommendation for listeners who want bass authority, sparkle, and engaging dynamics without going all-in on the flagship tier.

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AFUL Dawn-X arrives as a premium, resin-shelled flagship with a striking red-wood faceplate, a soft 4.4 mm cable, a protective zipper case, and multiple silicone tips. The shells run large but are well-contoured and vented, offering excellent comfort for extended sessions; those with smaller ears should demo first. Build and accessories are solid overall, with only some cable memory above the chin slider worth noting.

Tuning follows a mild V-shape: a moderate, textured bass lift; natural mids with lifelike vocal timbre; and a smooth, extended treble that brings air and detail without harshness. Kicks have weight and EDM carries rumble, yet vocals remain clear; male voices retain grit without thickness, while female vocals sound airy and sweet. Treble presents shimmer and clarity in a non-fatiguing way—ideal for long listens, though not for fans of aggressively boosted highs or outright bass-head needs.

Technical performance is a highlight: resolution, separation, imaging, and stage depth rank among the best at the price, creating immersive layering and precise placement even on busy tracks. Versus AFUL Caner, Dawn-X offers stronger, tighter bass, smoother treble, better comfort, and more refined layering; compared to FiiO’s FX17 and BGVP Solomon, it sounds cleaner, more naturally voiced, and less fatiguing. Against Elleian Apostle, the Apostle hits harder down low, while Dawn-X feels more balanced and immersive. Recommended for those who want a fun-yet-natural, all-rounder flagship with effortless treble and textured mids—less so for meta-leaning bright V tunings or very small ears. Final verdict: 4.5/5, a top contender at its price.

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AFUL Dawn-X arrives as a 12-driver quad-brid flagship (1 DD, 8 BA, 4 EST, 1 bone conduction) priced at $1,300. The unboxing mirrors AFUL’s higher-end sets: big leather case, cable clip, four ear-tip sets, cleaning brush, plus a soft but slightly memory-prone cable available in 3.5 or 4.4—and given the set’s power hunger, 4.4 makes sense. Design skews conservative: a red stabilized-wood faceplate paired with a plain black shell that doesn’t showcase the intricate internals. The shell is also very large (think Monarch-sized), creating comfort issues; small ears will struggle. Tip sensitivity is high, and stock tips provide the most balanced result.

Tonally this is classic AFUL house sound: a mild V with a slightly warm, musical tilt that remains balanced overall. Bass hits with punch, texture, and sub-bass rumble without bloat—ample enough for bass fans yet controlled. The midrange is a standout: natural, lush vocals with male voices gaining a touch from the warmth and female vocals kept more neutral, preserving timbral authenticity and emotional nuance. Treble is rich, smooth, and well-extended; the ESTs are tuned tastefully—no harsh glare—adding just the right air and sparkle. The bone-conduction driver focuses on mids and stays subtle in practice.

Technically, Dawn-X competes with top peers: high resolution, excellent separation, and rare cohesion for a multi-driver design. Imaging and layering feel strikingly realistic, while stage favors depth over width (wider sets like Fatfreq Quantum still outspread it). As a recommendation, it suits listeners seeking a slightly warm, highly detailed, all-rounder; it’s not ideal for small ears, lean-bass preferences, or those wanting brighter upper-mids/treble. Despite strong diminishing returns above mid-fi prices, Dawn-X punches above its tag and earns a rare two-star recommendation from Kois Archive—a flagship that feels genuinely special if the fit works.