ARTTI T10 PRO VS Letshuoer S12 Ultra

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The ARTTI T10 Pro is a compact, metal-shelled planar with an earbud-like footprint that fits easily and isolates well. It ships with a surprisingly nice modular screw-termination cable (3.5 mm and 4.4 mm included), a stable chin slider, clear L/R markings, two sets of ear tips, and a tidy branded zip case. Build feels solid, the nozzle is well executed, and the black faceplate looks sharp—overall a very complete package for the price.

Sonically it hits bassy, detailed, and clean: a rising bass shelf, energetic upper mids, and airy treble extension that reads cohesive in-ear rather than etched. Technicals overperform—imaging, sparkle, note weight, and soundstage all impress—while the main caveat is a slight noise floor. Versus peers, it avoids the mid-treble glare of sets like S12 Pro and NiceHCK F1 Pro, feels more engaging than the safer S08, and offers a more refined, mildly V-shaped take compared with Kiwi Ears K4. In short, this is a “planar that doesn’t sound like a planar” in the best way—highly recommended and an easy default pick under $100 for those aligned with this tuning.

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LETSHUOER S12 Ultra wraps up the S12 line with a 14.8 mm planar driver and a familiar metal shell in gunmetal or mocha. The housing is vented, comfy for long sessions, and solidly built with a flat 2-pin interface that grips tips well. The stock package is practical: a soft case, a fair tip spread, a braided cable with swappable 4.4 mm termination, and even a plug-and-play USB-C DAC that performs capably for on-the-go use.

Sonically, this set aims for a mild V-shape with tasteful tweaks that elevate it over prior S12 iterations. There’s a touch more sub-bass than the S12 Pro and a smoother 10 kHz zone, reducing fatigue while keeping upper-treble reach for air. The presentation favors balance over sparkle: detailed without the brittle edge many planars flirt with, and notably non-fatiguing over longer listens. Technical chops are strong for the class—clean, clear, and “planar-fast”—though instrument separation can lag behind pricier hybrids, and the topmost “crispy” sheen is slightly restrained.

On graphs and in practice, S12 Ultra reads as a refined take on modern planars—more bass weight, tidier 4–6 kHz, and better treble behavior than its siblings. Listeners hypersensitive up top may still prefer something like the S15 for a softer treble contour, while those chasing maximal separation may lean to sets like AFUL Performer 7 (with a spicier treble). With the usual planar caveat about unit variance and fit, this edition comes through as the standout of the S12 series: a clean, engaging, and genuinely high-value recommendation under $500.

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The ARTTI T10 PRO follows the OG T10—still a value monster—but pivots to a different flavor: it’s warmer, bassier, and not as squeaky-clean, yet remains surprisingly airy. Expect more bass, laid-back vocals with less 2k shout, a touch less bright, and better scaling with volume, while keeping a sense of openness. The overall profile is warm-but-airy, evoking a mini Symphonium Meteor vibe that’s easy to enjoy across casual listening.

Think of it as a cheaper Timeless 2—similar vibe (silver-nozzle tuning style), just a bit warmer and less technical. If the OG T10 is already in rotation, the clearer “pure performance” step is something like an ET42, making the T10 PRO more of a sidegrade for those wanting extra low-end weight without killing the air. Value still favors the original T10, but the T10 PRO earns a recommendation for its distinct, bass-leaning twist that stays engaging rather than muddy.

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The Letshuoer S12 Ultra comes through as the smoothest tuning in the S12 family— a sub-bass boosted all-rounder with quick transients and satisfying rumble that makes pop, hip-hop, and EDM notably fun. Technical performance sits around earlier S12 variants, but treble detail is dialed back a touch versus the OG/Pro in exchange for a more natural timbre and less “planar-bright” edge. It’s the bassiest S12 to date, hitting with better texture, impact, and extension, while keeping imaging crisp enough to stay engaging rather than clinical.

Tuning tweaks tame the upper range: a cut past 1.5 kHz and an 8–15 kHz dip ease shout and sibilance, with air returning via a lift around 15 kHz. Vocals sit a bit pulled back and the treble is the least energetic of the series, which helps long-session comfort—though brighter, heavily produced tracks or songs with little low-end can still sound peaky if pushed. Best results come at ~65–70 dB; tip-roll toward clear or bass-supporting tips to smooth the top and reinforce the lows, while avoiding brightening tips that exaggerate energy.

Versus peers, S12 Ultra feels like a bassier, less shouty take on Supermix 4/Nova and a slightly more V-shaped, punchier alternative to Defiant. It’s not a value monster for sheer detail compared with cheaper planars (T10, F1 Pro, etc.), but the payoff is a presentation that’s more musical, smoother, and easier to live with. For listeners wanting added slam without losing the S12’s speed and airy sense of space, this version offers the most enjoyable balance in the lineup.

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ARTTI T10 Pro steps into the relaxed planar club with meaningful upgrades: an all-metal shell that’s smaller and sturdier, a pocketable hard case, and a slick modular cable (3.5 mm & 4.4 mm). Fit is easier thanks to the slimmer nozzles and smart venting—no pressure build-up or driver flex—while the familiar 14 mm planar still only asks for a decent dongle to shine. At $110 MSRP (often around $95 street), the accessory set and build punch well above the tag.

Tonally, this is a warm-tilted, easy-listening planar: sub-bass rumbles, mid-bass hits with tidy punch, and the mids carry a lush body without smearing. Female vocals can sit a touch behind the mix, but timbre stays natural. Treble is smooth with sparkle—non-fatiguing at sane volumes, with only mild edge creeping in when cranked. Technical chops are confident for the class: tight bass texture, clear micro-details that don’t shout, solid imaging, and stage that’s about average in width yet fully reveals well-mastered spatial cues.

Against peers, it sits between LETSHUOER’s S08 and S12 Pro: fuller low-end and more air than S08 (which favors female vocals and loud listening comfort), but less top-end shine/detail pop than the S12 Pro. Versus Hidizs MP145 (red nozzles), tuning is very close, yet the T10 Pro wins on comfort, accessories, and value; MP145 still stretches a wider stage. Net result: a versatile all-rounder that suits most genres and listeners—just not die-hard trebleheads, bassheads, or those whose libraries lean heavily female-vocal-forward. For everyone else, this is an easy recommendation at the price.

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ARTTI T10 Pro brings a slick metal shell (black or silver), a pocketable case, two sets of tips, and a soft four-core cable with interchangeable 3.5/4.4 mm plugs on a standard two-pin connector. The fit is standout—small, low-profile, and comfy enough for sleeping. Tuning skews balanced with a bass boost: neutral-ish ear gain, smooth treble with a 10 k dip, and plenty of air.

The bass hits hard and textured with that fast planar attack/decay—clean, minimal bleed, less bouncy than a big DD slam. Mids stay natural and slightly forward without turning shouty; female vocals read neutral while male vocals gain meat from mid-bass warmth. Treble is smooth yet airy, adding micro-detail and openness; the extra air can feel a bit intense on longer sessions, though it makes strings sound fluid and well-extended. Technicals impress for the price: crisp separation, convincing 3D imaging, and excellent footstep pickup in shooters like Apex—easily a two-controller gaming nod.

Versus peers, the former favorite S08 plays more relaxed up top with less air and slightly less bass; T10 Pro feels more natural in vocals where S08 can get a touch forward. The Explorer (DD) is warmer and more laid-back with lighter bass and softer treble for pure chill. For an all-rounder that stays fun, T10 Pro takes the pick; choose S08 for easy long listens, Explorer for coffee-and-book vibes. At around $100, this is planar done right—punchy textured bass, neutral mids, smooth airy treble—and it earns a confident three-star recommendation.

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Final revision of the series brings a very coherent, slightly warmer presentation with treble pulled into safer territory and mids that feel a bit weightier. Ultra sits between the smoother S08 and the rawer S12 Pro, and it comes across a touch bassier than the graphs suggest. As a single-driver planar, it retains solid resolve and a natural, easy tonality that will suit most listeners, especially at the 169 price point.

Despite graphs looking similar to S12 2024, Ultra sounds smaller and flatter, with less transparency and dynamics. Soundstage is mainly left-right; height and depth are curtailed, so placement is not always in the right place on more spacious tracks. The smoother top end avoids harshness and makes long sessions comfortable, but the trade-off is reduced sparkle and air versus the 2024 tuning.

Versus budget planar standouts like KZ PRX, Ultra is a clear, smoother upgrade; versus S12 2024, it is the safer all-round pick but not as open or exciting. Dense mixes can nudge the bass toward a slight bloom and compress the center image. For most, this is the one S12 to buy; stage and transparency chasers may still prefer the 2024 version.