64 Audio U12T VS Thieaudio Origin

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The 64 Audio U12t lands exactly where its reputation suggests: a warm, laid-back, yet highly detailed all-rounder that stays engaging without ever turning fatiguing. With the apex M15 module, bass shifts toward a tasteful sub-bass lift that adds punch and body while keeping the midrange clean; vocals sit a touch relaxed, and the treble reaches high with smooth extension and air. Despite being an all-BA set, the low end carries surprising weight and macro-dynamics, and the overall presentation feels effortless and cohesive—“does-it-all” tuning done right.

Trade-offs are minor: timbre can sound slightly artificial at times, and dropping to the M10 module trims bass but also some excitement. Build is comfortable and compact, though the stock cable is annoyingly wiry and memory-prone. Against its stablemates, U12t stands as the benchmark: cleaner and less fatiguing than U18t, more versatile than the warmer Nio (with M15), and less head-stage wow than Trio but more universally balanced. End result: a confident 5/5 for a high-price IEM that actually feels worth chasing if this signature hits the brief.

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At $850, Thieaudio Origin positions itself as an unapologetic bass icon with a complex driver stack (1DD/4BA/2EST plus bone conduction). Build and accessories are a mixed bag: the large, chunky shells will be too big for many ears, and the semi-transparent, pattern-heavy faceplates feel a bit generic. The thick stock cable suits the heft but the swappable plug mechanism is long, doesn’t lock, and often detaches at the adapter rather than the jack—an unnecessary annoyance. Fit is the major caveat; for smaller ears, contact is mostly at the tip, which compromises comfort and seal consistency.

Sonically, Origin is unmistakably bass-forward—well beyond Harman—with a warm, thick low end that initially reads as overbearing and soft on definition. With time, that bass takes on a distinctive, “ooey-gooey” atmospheric quality that sits under the mix rather than congesting it, enabling a surprisingly grand, spacious presentation. Above the lows, the tuning is “new-meta” adjacent: neutral-ish mids, balanced upper-treble, and a touch of mid-treble bite that sharpens transients and adds contrast. The trade-off is occasional edginess/sibilance on certain vocals, but guitars and percussion benefit from extra snap. Live recordings in particular gain scale and drama.

Against the Mega 5 EST Bass+ (cheaper, similarly boosted), Origin offers better separation and more engaging transients, while the Mega feels sludgier and less distinct—though also less edgy. Overall, Origin is a unique bass experience that prioritizes mood and scale over textbook bass tightness. The combination of fit challenges, polarizing low-end quality, and treble bite tempers enthusiasm, settling at a three-star (out of five) verdict—compelling for bass lovers seeking something different, but not a universal recommendation.

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Presented as a former favorite turned cautionary tale, the 64 Audio U12t shows a neutral-warm bass with good texture, speed, and separation, though the mid-bass can feel unnecessary for a non–bass-head tuning. Trouble starts at the 3 kHz scoop, where vocals lose presence and clarity; attempts to restore bite via added treble create sharpness instead of openness, with emphasized peaks around 13 kHz and 17 kHz. This combo makes volume scaling tricky—either accept recessed vocals or endure fatiguing highs—though the treble is otherwise solid from 6–10 kHz. Technical chops are undeniably strong: detail retrieval, instrument layering, and imaging are top-tier, with quick attacks and clean separation across the stage. Still, the staging feels wide yet flat, as the recessed mids reduce depth and contrast, and dynamic tracks (K-pop/J-pop/J-rock) expose the unevenness, prompting constant volume tweaks; slower, softer material fares better. Given the vocal recession and treble fatigue, the value proposition is questioned for a $2,000 set—alternatives like the Variations and EGL7m offer more open, extended vocals with smoother treble, while RS5 and Heyday provide extra warmth without the same pitfalls.

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Thieaudio Origin takes the “Meta” idea and dials it toward a fuller, bass-forward presentation without losing control. The bone conduction driver is not a gimmick—low notes carry palpable vibration and reverb while staying tight with clean layering and no mid bleed. Vocals sit naturally—neither shouty nor buried—though this isn’t a vocal-focused set (reach for RS5 if that’s the priority). Versus Oracle Mk II, the Origin trades some cleanliness for deeper tactility and weight, making bass textures feel more alive.

The top end is airy and extended on smooth Sonion ESTs, cutting through the warmth to balance the tuning. Most tracks are fine, but snare- and cymbal-heavy songs at higher volumes can push the treble into fatiguing territory (e.g., around 3:30 in Hikaru Utada’s “Time”). It’s generally controlled at moderate levels; just note that treble energy scales and can turn sharp when cranked.

In A/Bs, the Origin’s bass texture outclasses sets like Mega 5 EST, offering more detail, impact, and less boom. Against TITAN, Origin’s reverb and low-end “shake” edge it out while avoiding the Titan’s 5 kHz peak—though Titan still feels more exciting with livelier vocals. Versus all-rounders Monarch Mk II and Hype 10, those remain cleaner with better mids/layering but can’t match Origin’s sheer bass depth. The wildcard is BAJIE: stock, Origin wins; with EQ, BAJIE’s bigger 14.2 mm driver slams harder, while Origin stays the more balanced, tactile choice. Net: for a premium, fun, bass-centric daily driver under a grand, Origin sets a new reference—unless maximum slam with EQ is the goal.

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Thieaudio Origin brings a wild driver stack—1 DD + 4 BA + 2 EST + 1 bone conductor—inside a massive yet surprisingly comfortable shell. Build feels premium: striking faceplate, visible bone-conductor puck, proper nozzle lip, and a thicker cable than usual from the brand. The hockey-puck case is a nice touch, and for about $100 more there’s custom artwork available, making the unboxing and ownership experience feel a bit more special.

Sonically, this one swings for impact. Bass hits clean, strong, and fun, with upper mids that come across pristine. The trade-off: a hotter mid/treble band (around the 4–10 kHz region, with a notable 6 kHz glare) that can push cymbals and strings into an unnatural territory. Resolution and imaging don’t always keep pace for the price; stage is big and enveloping, but fine detail and separation can blur, making it a specialist that thrills on bass-centric tracks yet feels less convincing on metal or complex orchestral pieces.

Against its siblings, Origin sits like a more fun, bass-forward take compared with HYPE 4/10, but with a treble execution that’s less refined. Versus Oracle MK3, the latter’s ESTs sound crisper and cleaner; versus Monarch MKIII, that model’s tasteful 5–8 kHz dip lends better resolution. If pure detail is the target, sets like HiSenior Mega5 Bass or the Subtonic Annihilator may prove more satisfying. As a whole, Origin is a unique, bass-thrilled experience with excellent fit, huge space, and customization perks—great for those chasing visceral low-end and a cinematic stage, less ideal for listeners prioritizing treble finesse and microdetail at this tier.

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Presentation falls short of flagship expectations—especially the stock cable, which feels flimsy and uninspiring—but the tuning is where the 64 Audio U12t earns its reputation. With a gently U-shaped response and swappable apex modules altering bass quantity (M10 leaner; M15/M20 adding a deeper, sub-bass-tilted shelf), the low end carries uncommon texture and decay for an all-BA setup while preserving BA speed and control. The sub-bass shelf levels off around 200Hz, avoiding midrange bleed and keeping the overall tonality clean and balanced.

The mids are slightly scooped yet inoffensive, with ear-gain centering near 2kHz and a tasteful dip through 2–5kHz that preserves depth without hollowing out vocals. Treble is distinctive thanks to the tia super tweeter mounted at the nozzle: a mid-treble dip followed by pronounced peaks around 15–17kHz creates a sense of airy “pseudo-treble” that some listeners (especially younger ears) perceive as bright, while others may find it dark if those upper harmonics aren’t audible. Tip choice matters—Spinfits can emphasize air, while Final E can tame the top end—making the signature unusually tunable to preference.

On the technical front, the U12t is highly resolving, pulling micro-details forward with ease, yet its transient attack has a subtle softness that gives an “analog” character rather than razor-edged sharpness. Where it truly distinguishes itself is macrodynamics—quiet-to-loud swings feel visceral and engaging, a rarity among BA designs and rivaled only by a select few dynamic-driver flagships. Summed up, it’s the “90-in-every-subject” kind of performer: maybe not the single best at any one metric, but making the fewest compromises across the board. For anyone seeking a well-rounded flagship that handles almost anything with poise, the U12t remains a top recommendation.

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Unique Melody MEST MKII brings a distinctive recipe: a DD + 4BA + 2EST array augmented by a full-range bone-conduction driver, translating to a relaxed yet vividly holographic presentation. Bass quantity sits in the pocket—neither shy nor boomy—while the sub-bass extension digs deep and rumbles on cue, sketching out stage width and depth with authority. Mid-bass hits cleanly but avoids brute-force slam, keeping space clear for detail. Mids read a touch lean/diffused: tonally correct and easygoing, gorgeous on plucked strings, a bit light in note weight for violins and cellos. Treble is sparkly without sibilance at sane volumes; push volume for bigger bass hits and the upper range can tip into fatigue. Don’t over-trust FR graphs here—the BC driver adds presence that won’t show on measurements.

Technical chops are firmly high-end: resolution and separation impress, EST speed makes cymbals and chimes glide, and dynamics pop when sub-bass swells. The staging is the showstopper—layered, airy, and convincingly 3D (hell yeah). Versus peers, MEST MKII trades some midrange weight/tonality for superior sparkle and more satisfying bass texture; sets like V16 Divinity or Elysian Diva may win for mids, but MEST counters with atmosphere and bite up top. With the current price drop around the ~$1k mark, it becomes an easy recommendation for those seeking immersive imaging and sub-bass architecture—just ditch the atrocious stock cable ergonomics and enjoy the ride.

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Thieaudio Origin goes full mad-science: 1DD + 4BA + 2EST + bone conductor (eight drivers per side), big shells, hefty stock cable, and a tuning built around a ~12 dB sub-bass shelf. Fit can be a touch chunky, but foam tips (think Render) lock in seal and turn the low end from “more bass somewhere” into deep, anchored slam; silicone leaves it a bit loose. Accessories are barebones—swap plugs, tips, case—and that’s it. No fancy gifts, just a box of sound.

Sonically it’s a deconstructed presentation: instead of one smooth ribbon like a single DD, the Origin spreads the band across space—drivers carving out their lanes so instruments pop up here… then there… then over there. It’s not “mushy blend,” it’s forcible separation that can feel museum-exhibit surreal: treble details flit around (hello ESTs) while bass feels omnipresent and room-filling. It doesn’t really scale with amps; neutral DAC/amps to pricier rigs all keep roughly the same character. What can change the tonality is cable impedance—at 9 Ω and high sensitivity, cheap/high-resistance wires can skew things, so stick with a stout low-impedance lead.

Gripes? The cable is thick, custom faceplates up the bill, and the package isn’t exactly a Santa sack. But for $850, the payoff is a unique, spacious, “pulled-apart” soundstage that turns playlists into set pieces. Not for purists chasing one-driver cohesion; absolutely for listeners who crave clarity, staging theatrics, and tactile bass. Final word: a solid 9/10 on sound and swagger—price keeps it off the throne, excitement keeps it in the cart.

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Thieaudio Origin steps into the high end with a hybrid array—1DD + 4BA + 2EST + bone conduction—that pushes a richly textured, holographic presentation. The soundstage is wide and deep, imaging snaps into place, and the resolution clears the bar set by mid-tier sets. Most striking is the low-end: sub-bass digs deep with palpable rumble and impact yet avoids flooding the mix, leaving mids clean, detailed, and lifelike, and the treble airy with convincing cymbal sheen. At $850, the overall technical polish and bass quality feel appropriately premium—better than some kilobuck options.

For competitive gaming, the tuning translates across titles with ease. In Valorant, staging, separation, and distance cues deliver an A experience; occasional low-end bloom can introduce slight over/under flicks on sudden off-screen shots, but not often enough to dent performance. In Apex Legends, verticality and imaging impress (A-): during chaotic third/fourth-party fights, some lighter movement cues (slides, climbs) could cut through a bit more. In Warzone, depth and impact enhance immersion without masking key information, keeping imaging and separation strong. Tip rolling helps: foam trims bass and brightens; silicone restores slam.

Build and ergonomics match the sonic ambition: a galactic faceplate, sturdy 2-pin cable with swappable terminations, and a chassis that’s larger than average yet comfortable for long sessions (minor fatigue around the 6-hour mark). The nozzle is wide but short with a solid lip for secure tips. Overall, this is a fun yet precise set that excels in music and earns a high mark on a “wall-hack certified” style tier list for shooters—driven by standout bass, convincing staging, and top-tier separation.