Yu9 Que VS Softears RSV MK II

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The YU9 Que sports a premium, durable resin shell in pure black with a metallic-feeling faceplate and a comfortable design featuring an anti-tragus catch. While the build itself feels handsome and unique, the included cable is criticized as wimpy and unpleasant, with a strong suggestion to upgrade it. Accessories are deemed solid, including a nice selection of tips and a particularly praised case with a soft, luxurious interior.

Sonically, the YU9 Que earns immense praise for its exceptional tuning, described as clean, resolute, and non-fatiguing. It delivers strong, textured bass that avoids being overwhelming, coupled with extremely well-done upper mids. While not class-leading in technicalities like micro-detail or instrument separation, its tonal balance is considered sophisticated and reminiscent of far more expensive sets like the Annihilator, even surpassing the Monarch MKII in tuning preference. It's highlighted as a fantastic all-rounder with a smooth, agreeable signature suitable for long listening sessions.

Despite its modest single dynamic driver + 3BA configuration and $409 price point, the YU9 Que is declared a very special and unique IEM, worthy of the hype it received. The review concludes it's a price leader and a highly competent package from a small brand, offering outstanding value and a beautiful, well-executed design that makes it an easy recommendation for those seeking a smooth, non-fatiguing sound.

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Softears RSV MK2 takes the original’s idea and pushes it into a bolder, bass-centric direction. The compact shell is comfortably contoured, isolates well, and uses a slightly recessed 2-pin; the angular faceplate gives off an “evil Voltron” vibe in the best way. Packaging and accessories feel premium—a silky cable terminated in 4.4 mm with a matching 3.5 mm adapter, tip selection, cleaning tools—though the bundled case looks nice while feeling a bit faux-leather and questionable for durability. Under the hood is a 5-BA array around the ~$700 mark, presented with the fit and finish expected at this tier.

The tuning is unabashedly bass-heavy with a warmer rise through ~150–200 Hz and a slightly dark-leaning top end; not super airy, but undeniably full, rich, and musical. That weight can introduce occasional roughness/sibilance in certain vocals and can muddy spoken-word content, so this isn’t for everyone. Within Softears’ catalog it stands out: far more low-end than RSV (OG), Volume S, Twilight or Studio 4, and a different philosophy than Enigma’s vivid upper-mids. Versus sets like Monarch MK4, this goes for a deeper, thumpier shelf with a gentler upper air—trading a bit of “technical” sheen for tonal density and groove.

As a “tactfully executed bass-head” Softears, RSV MK2 delivers: impactful low end, natural mids, comfortable build, and a coherent, down-sloping balance that suits modern music exceptionally well. It isn’t flawless—moments of aggressiveness, plus a case that feels more pretty than tough—but the overall package is compelling. In the $400–$900 bracket it scores a 9.4 on this scale, while strong lower-priced options (e.g., bass-shelf specialists like Punch-tuned sets) may satisfy similar cravings if budget leads. For listeners craving a plush, powerful low end done with intent, this is a distinctive and deeply enjoyable take from Softears.

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YU9 Que presents a balanced, almost neutral tuning with a tasteful touch of mid-bass for warmth and punch. Treble is clean and controlled—more clarity than “sizzle”—so detail comes through without harshness, while mids keep vocals natural rather than forward or thin. Technical performance sits in the “solid for the price” camp: separation and imaging are tidy, but not the kind of hyper-etched sparkle that chases wow factor.

In practice, it shines with slower pop, R&B, acoustic and vocal-centric tracks where its coherence and smoothness pay off; those seeking big sub-bass drama or ultra-aerated treble fireworks may find it a touch polite. Versus brighter, more contrasty sets, the Que trades spectacle for musicality and long-session comfort, making value hinge on whether a refined, low-fatigue signature is preferred over maximum excitement at the price point.

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Softears RSV MK2 shifts from the OG’s vocal-centric tilt into a bass-forward all-rounder. The sub-bass and mid-bass hit with real slam and weight, giving drums and bass guitars a satisfying, dynamic punch. Upper mids (3–6 kHz) are tamed to avoid shout, while a gentle 1–2 kHz rise keeps vocals open and natural—slightly less pushed than the original but still clear. Treble is smooth with decent air; not super sparkly and there’s no EST “sauce,” but it stays clean and non-fatiguing.

As a package, MK2’s standout is the low-end texture—thunderous yet controlled—making it one of the more engaging bassy sets under four figures. Technical performance is solid for the tier, though some rivals at lower prices bring more raw detail and EST extension. Build and accessories get a tasteful, modern refresh. For best balance, the stock tips work well; bass-boosting or treble-opening tips can shift it toward a more V-shape at the expense of overall smoothness.

On genre fit, MK2 shines with hip-hop, pop, EDM, and R&B, where its punch and warmth bring rhythms to life; for orchestral or leaner acoustic picks, the bass can edge forward depending on the mix. It scales to mid–high volumes nicely (around the 70–80 dB zone) without turning sharp. Compared with the OG RSV—now likely affected by a silent retune in recent units—the MK2 is the safer buy: less shout, more authority down low, and a broader all-rounder appeal. Recommended, especially if found below full MSRP, for listeners craving tasteful bass with natural mids and relaxed, smooth treble.

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At ~$400, YU9 Audio Que sets a new bar for the bracket: a 1DD+3BA hybrid with a modest bass shelf, slightly forward mids, and linear treble extension that sounds more speaker-like than typical IEMs. The presentation is exceptionally polished and quiet-backgrounded, yielding crisp separation, convincing imaging, and staging in depth, width, and height that resembles far pricier gear.

The low end brings tactile mid-bass impact with deep, controlled sub-bass, pairing naturally with that extended, peak-free top end; the result is a true playlist killer across EDM, rock, vocal, and classical. Nitpicks exist: mids can sit a touch forward depending on track and the set rewards a slightly higher volume and a secure, deeper fit, while V-shape fans may find it too boring.

Compared with favorites like Dusk, Cadenza 4, and Volume S, Que keeps their strengths but fixes common complaints by delivering fuller bass weight, cleaner openness, and more realistic attack and dynamics. It does not need giant-killer claims to stand out; at this price it is simply class-leading.

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Build & accessories: a hybrid 1DD + 3BA set priced around $399 with a spacious zipper case, multiple silicone tips, pouches, cleaning cloth, and shirt clip. The faceplate’s wavy, stone-like texture looks premium, and the shells use a 2-pin connector. The downside is the stock cable: it’s springy, only in 4.4 mm, and feels below the tier. Fit is serviceable but not ideal—the shell isn’t the most ergonomic, the nozzle lacks a lip, and seating a deeper fit can take a moment; once set, stability is good and tips stayed secure in use.

Sound: this isn’t a “new-meta” curve; it’s a unique, lively tuning. Bass is punchy, dynamic, and highly textured—more physical in practice than the graph suggests, with excellent impact and kick-drum authority. An early rise after 1 kHz pushes vocals front and center for an intimate, engaging presentation without tipping into shout. Treble is refined, sparkly, and well-extended: it is a bright set but avoids harshness, peakiness, sibilance, and fatigue, delivering crisp cymbals and defined transients even for rock and metal at any volume. Technicalities are class-leading under $500 with standout detail retrieval and separation; the one wish is a larger soundstage.

Comparisons & verdict: the Elysian Apostle still wins on bass texture/impact, treble refinement, and overall resolution, but the Yu9 Que offers a convincing “Apostle flavor” at a lower price. Versus Elysian Pilgrim, the Que is fuller and bassier, while Pilgrim’s treble is tamer; versus Volume S, the Que is cleaner, brighter, more detailed as the Volume S trends warmer with more neutral treble; against Dusk DSP, Dusk sounds more natural/balanced but the Que feels more fun and technical. Recommended for those who crave clarity, sparkle, and engagement without fatigue; less ideal if treble-sensitive or preferring a warm, relaxed tonality, and worth demoing for comfort. A top contender and serious gatekeeper around $400—final rating: 4.5/5 with a strong recommendation.

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Yu9 Que arrives with a surprisingly premium unboxing: a crush-resistant carrying case with plush padding, an IEM pouch, microfiber cloth, cable clip, and two ear-tip sets (standard silicone and more premium liquid silicone). A quirky 3D-printed nameplate with serial number and a faceplate etched in a topographic-map motif give it character. The shell is on the larger, wider side—comfortable for many, but small ears should test fit first. The stock cable is just okay (some memory, no chin slider), though it’s offered in 3.5 mm or 4.4 mm terminations.

Tonally, this is a neutral-reference set with a tasteful bass lift—clean impact without throwing off balance. Sub-bass has satisfying thump and texture, though bass-heads coming from sets like Kiwi Ears Punch may find it polite. The mids sit even and accurate—no “vocal magic,” yet clearly above average. Treble stretches well into the air with a touch of brightness that adds crispness and a slightly clinical edge, staying shy of fatiguing. Technical chops are the draw: a decently wide soundstage (roughly 3–4/5 by comparison), standout 3D imaging, and strong resolution/separation make it excellent for gaming—worthy of a two-controller nod—though ultimate detail still trails pricier kilobuck options.

Versus peers: Moondrop Dusk (DSP) is warmer with bass that hits a bit harder, while Yu9 Que is the more neutral, reference-leaning take. Elysian Pilgrim offers smoother treble, but Yu9 Que counters with better bass grip, stage, and imaging. AFUL Performer 7 tilts mild V; choose it for extra mid-bass and forward treble, otherwise Yu9 Que wins on technicality. Mega 5 EST chases the meta target yet stumbles in bass/treble; NiceHCK Rockies refines that approach and might be the more exciting alternative if spending slightly more. Bottom line: the hype is justified—a superb all-rounder around $400 with only the cable begging for an upgrade. It’s a clear pick for neutral/reference fans, though those seeking more “fun” might look elsewhere; call it a pragmatic, two-star recommendation amid a crowded market and likely pre-order waits.

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Yu9’s Que lands as a “safer Annihilator”: a warmer, scaled-back take that pushes ample sub-bass while keeping the rest tastefully controlled. The low end feels liquidy and bouncy, underpinning an aggressive 1–3 kHz rise with a gentle 3–5 kHz taper, so vocals sit upfront and crisp yet remain remarkably smooth thanks to the extra low-end warmth. Treble is slightly scooped around 5–6 kHz and then climbs in small, well-placed peaks out to ~15–18 kHz, yielding excellent extension that feels on par with sets like Moondrop Variations in this range.

What makes it pop is the value proposition: at $400, the overall resolution, tonal balance, and staging read far pricier—more like the $700–800 bracket. With its engaging sub-bass lift, lucid mids, and airy yet controlled top end, Que comes off as a polished, crowd-friendly tuning that still excites detail chasers. If momentum holds, this looks like the next big thing around the $400 mark.

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The Softears RSV MK II is a 5BA set at $699 with a sleek, performance-driven look—carbon-fiber “V” and RS badge on the faceplate—paired to an ergonomic shell and fish-mouth nozzle that stays light and exceptionally comfortable over long sessions. The package is solid: a braided 4.4 cable (plus a 3.5 mm dongle), cleaning cloth, two pouches, and two sets of silicone tips; the only nitpick is wishing for a more premium carrying case at this price.

What sets RSV MK II apart is how a generous bass boost/extension coexists with top-tier imaging, separation, and layering. In Valorant, footsteps hit with extra energy and impact yet subtle cues—water steps, micro-movements—cut through even during Vandal spam and 5v5 ability chaos. In Battlefield the set is a standout for immersion (planes, tanks) while preserving precise gunfire placement and the light “clinks” that win fights. The latest mix in Apex plays to its strengths: thermites don’t mask light taps, elevation cues remain clear, slides and shield pops are easy to track; and in Call of Duty, airstrikes and mortar fire don’t swamp critical information. It’s scored as the lowest-priced S-tier on the WallHack-certified list—note the tonality skews a touch dark, so strict reference seekers may prefer something lighter, but for impactful low-end plus elite competitive clarity, RSV MK II is a killer pick.

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Softears RSV MK II brings back the all-BA ethos at $700 with five armatures and a promise of “re-engineered BA bass.” Build and accessories feel premium (sleek shells, plush case), while the cable choice is quirky—4.4 mm only with a 3.5 mm pigtail. Fit is outstandingly secure and custom-like but on the larger side with a longer nozzle, so comfort depends on ear size. Softears’ Ultra Clear tips work well; the new metal-ring variant adds little beyond novelty.

On the graph, bass looks like gigabass, yet in ear it settles into a warm, weighty foundation without steamrolling the mids. The midrange follows a “new-meta neutral” tilt—fuller than Harman with forward upper-mids—while treble lands clean and sparkly without fatigue. Imaging is tidy rather than cavernous; separation and delineation are convincing, with the top end executed better than the bottom. BA bass here is among the more physical and satisfying of its kind, though tactility can be track-dependent and turn a bit tubby on very bass-heavy mixes.

Against peers, Symphonium Meteor sounds warmer and more “special” but less all-round; DUNU SA6 MK2 is more colored with janglier treble and the least convincing bass; 7th Acoustics Supernova trades warmth for vivid, bright-tilted imaging; Softears Studio 4 is lighter on bass and airier; and the old Moondrop S8 stays the lively, vocal-centric counterpoint. Net take: a supremely competent, character-light all-rounder that favors bass weight over panoramic staging. Verdict: 4/5 stars—a welcome throwback done right, and notably cheaper than the original RSV launch price.