Thieaudio Monarch MK3 VS 7th Acoustics Supernova

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Thieaudio Monarch MK3 takes the flagship slot with swagger: a 2DD + 6BA + 2EST array and a 4-way passive crossover, centered on the Impact² isobaric push-pull dual 10 mm subwoofer. The shells are huge and gorgeous (plain backs at ~$1000, fancy backs around ~$1100), vented on the underside, and paired with a supple, interchangeable-plug cable (2.5 / 3.5 / 4.4). Despite the driver count, coherence is the headline: this isn’t a parts parade—it’s a single, surgically precise instrument.

Sonically, bass behaves like a well-tuned subwoofer in a treated room: tight, fast, and slammy without bloat. The real party trick is imaging and spatial “distance”—sounds lock into place with eerie specificity, making familiar tracks feel new. Instrument separation is crystalline, treble air is effortless, and the set is easy to drive yet scales—more power refines rather than merely getting louder. Tip rolling matters: stock foams/silicones are okay, Dekoni helps, Dunu S&S can fit oddly on these large shells, while Render tips seal the room and boost performance ~15–20%, supercharging the imaging and engagement.

Against the Monarch MKII (good, kept around), the MK3 feels like a different tier—the sort of tuning that glues ears to music and makes skipping tracks impossible. Accessories are minimal because the message is clear: you’re buying the sound, and it arguably feels underpriced for this level. Currently on pre-order, this is peak IEM energy—an endgame-grade, king-making performance that invites hyperbole and earns it.

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7th Acoustic Supernova brings a 6BA setup at around $850, dressed in pretty shells but a bit bulgy for the fit. Packaging quirks and micro-print gripes aside, the included Versus Audio cable (permanent 4.4) looks flashy and feels premium. Tip rolling from Dunu SS to Render shifts the presentation, but the core signature stays smooth to a fault—vocals sit a touch further back, treble hints at a lift then fades with different tips, and only the occasional techno track shows bass that carries well. It’s the kind of tuning that’s impeccably polite yet tip-dependent and rarely grabs attention.

Across sources—from a warmer Alpha Pro chain to other amps—the Supernova keeps a straight face: competent, clean, and ultimately boring for the price. Against known yardsticks (neutral “glass-of-water” sets, bass-heavy options, or value champs like Kiwi’s Astrals), the Supernova doesn’t carve a clear identity; it’s smooth without the thrill. Final takeaway: lovely looks, nice cable, but the sound feels meh at this tier—barely meeting the bar where musical moments should pop. On the value meter, the cable helps, the tuning doesn’t; there’s been better—and for less.

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Bass is where the Monarch MK3 steals the show: tight, textured, and rumbly with real slam and no bleed, giving male vocals a more natural heft while staying clean. The Prestige LTD pushes the low end back for a lighter hit but trades that for a more open, airy stage and superior layering—great for busy mixes like rock, metal, and classical. The Hype 2 mirrors the LTD’s bass balance and rumble conceptually, but lacks the same overall technical resolve, making the MK3 the better pick for pop, EDM, R&B, and hip-hop that benefit from weighty sub-bass.

Through the midrange, the LTD steps ahead on separation, detail, and note definition, presenting vocals slightly set back yet more airy and sparkly; female vocals especially shine. The MK3 counters with more weight and engagement on male vocals and a forward presence, though its stage isn’t as deep or spacious as the LTD (a modest vertical lift over Hype 2, but not a “$1k soundstage”). Up top, the LTD has the smoothest, best-extended treble with the most air and microdetail of the trio. All three excel at moderate volume, but none invites cranking like certain high-volume specialists.

As an all-rounder, the MK3 checks nearly every box yet misses that distinctive “special sauce” expected at its price; think ~15–20% uplift over Hype 2. The LTD delivers the bigger technical jump at roughly 25–30%, with staging, extension, and air taking the crown, making a strong case paired with a cheaper daily driver. The Monarch MK2 still earns a nod for its midrange/vocal magic if that’s the priority. Final word: both LTD and MK3 score an S; for those willing to spend, they’re easy to recommend—just match the tuning to the library and the qualities valued most.

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Supernova’s calling card is its treble: extended, butter-smooth, and startlingly even. No peaks, no weird dips, no BA glare—just airy shimmer with spot-on decay that stays stable at any volume. It rivals the best under $1K and even brushes the Symphonium Helios (OG) for finesse, yet remains less bright and more relaxed. Despite being all-BA, there’s no BA timbre. Dynamics feel controlled rather than fiery—big chorus swings (think “Run Away With Me”) are rendered cohesively without harshness, trading adrenaline for refinement.

The low end is clean, tight, and well-separated—not a sub-bass sledgehammer. Sets with DDs like Hype 2, EJ07M, or Monarch dig deeper and rumble harder, but Supernova’s bass gives body without smearing. Vocals sit mid-forward but not shouty, a hair warm from mid-bass/1.5k lift; extension around ~3k could use a touch more presence for extra “head voice,” yet the overall presentation remains natural and unfatiguing and scales beautifully with volume. Versus Moondrop S8, Supernova trades a bit of the S8’s clinical separation for fuller mid-bass weight and more textured, even treble; the S8 keeps a leaner, clearer stage and more vocal gain.

Comparisons sharpen its profile: against EJ07 (OG/KL), EJ07 offers darker tonality and stronger sub-bass immersion, while Supernova is airier and smoother up top. ThieAudio Monarch series: Mk1 has snappier vocal clarity, Mk3 hits harder with bass texture/slam, but Supernova wins on treble quality and macro-smoothness. Neon Pro can feel more engaging at mid volumes with firmer low-end and crisper imaging, whereas Supernova shines when cranked, remaining composed and immersive. Net take: an “endgame”-leaning, balanced all-rounder for those wanting refinement over fireworks—genre-agnostic, not a treble-head blaster or bass cannon, and short on “special sauce” theatrics, yet consistently excellent where it counts. Availability is the real enemy; production scarcity makes it hard to snag.

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Custom-built shells and faceplates make Supernova feel special from the start, and the ergonomics seal the deal: a light, durable shell, super comfortable fit and a supple, well-textured stock cable. The tonality stays open, clean and free of sibilance, with imaging that snaps into place both horizontally and vertically. Detail retrieval in busy scenes is immaculate, making it superb for long gaming sessions—not to farm K/D ratios, but to elevate the overall experience as in-game micro-details sparkle. Tip rolling works well (SpinFit, Divinus, Latex H70), though the included tips are decent; the clamshell case is nice, if a bit annoying to twist shut.

Versus peers, Supernova shows almost perfect tuning with exceedingly strong technicals and a touch of juicy, lush timbre. Against Night Oblivion Butastur, the overall tone and bass texture on Supernova are a hair better, while Butastur gets you 95–98% of the way for less and shines for classical and pop. Compared with Monarch Mk III, the FR curves are scarily close (within a couple dB), yet Supernova’s treble refinement and stage feel a tad more convincing, even if Monarch brings different technical strengths. Net takeaway: a holographic, genre-agnostic performer that’s easy to recommend; the only real caveat is the long wait time to get one, and the bass could use a touch more authority.

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Thieaudio Monarch MK3 steps up as a true flagship: a 2DD + 6BA + 2EST hybrid with high-grade Knowles/Sonion drivers, a gorgeous marbled faceplate, and—crucially—a vastly improved shell over MK2. Comfort moves from a 2-hour limit to all-session wear, and the stock package (solid cable with swappable terminations, foam and silicone tips) is well thought out. Tip choice meaningfully shapes performance; options like SednaEarfit Short or Comply foam push it toward its best.

Tuning follows a balanced, studio-leaning tonality with extra sub-bass warmth, delivering both clinical insight and genuine fun. Micro-detail is standout, bass is clean, textured, and physical (from Nirvana’s “Lithium” to modern hip-hop drops), and male vocals are among the most convincing heard on an IEM in this tier. Stage is wider and a bit taller than MK2, with excellent imaging, layering, and separation, keeping drums, bass guitar, and synth lines neatly organized without blunting impact.

For competitive gaming, the MK3 brings a tight soundstage, strong depth perception, and clear audio cue emphasis, offering precise 360° placement and adequate verticality. Versus Prestige Limited, it trades some sterile clinical edge for a more engaging, atmospheric presentation that reads distance and urgency better; compared to Yanyin Moonlight Ultra, it’s the more coherent pick for both games and music. While great mid-fi options like Zens Top, Orchestra Lite, or Yanyin Canon 2 remain strong, Monarch MK3 feels like the elevated, “dreamy” flagship experience—a new top choice for music enjoyment that also dominates in game when properly tipped.

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Hand-built in Indonesia with customizable abalone faceplates, Supernova feels like a boutique step up in value: a handsome, slightly medium-large shell, stable fit, strong isolation, and a tasteful, beefy copper cable. The only nit: a smooth nozzle with no tip notch means soft tips can slip. Overall execution—build, comfort, and the personal order-to-chat experience—delivers a “next level” vibe uncommon around $750.

Tonally, this is a clean, body-intact neutral with a touch of sub-bass lift and a tasteful push in the lower treble. Midrange is the star—full, natural, and richly timbred without the hollow lower-mid dip of leaner targets. Treble is well-extended, linear, and textured, giving transients snap without tipping into sibilance. Technicals impress: tight bass attack, clear separation, precise imaging, and strong micro-contrast that keeps dense mixes like The Cure’s “Disintegration” organized and alive. Caveats are mild: listeners sensitive to lower-treble energy should note its presence, and the low end—while punchy—still reads as BA bass with less sub-bass “flutter” than a dynamic driver.

Against peers, Supernova blends the fuller midrange charm of Moondrop Blessing 2 with the technical grace of Moondrop S8, yet sounds more natural than either. Symphonium Meteor offers bigger bass and a lush stage but trails in separation and mid texture; S8 feels smoother with even stronger 3D imaging but less body. Taken together, Supernova’s tuning, texture, and boutique fit/finish make a compelling all-rounder—and an easy five-star recommendation, especially for those who value lifelike mids and crisp, controlled sparkle over maximal slam.