Hisenior Mega5-EST VS Softears RSV MK II

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Hisenior Mega5-EST brings a tidy, understated shell with a semi-custom fit that sits secure and comfortable on medium-small ears. The box is loaded—foam and silicone tips, a microfiber cloth, and a chunky Pelican-style case—but the included cable is a mixed bag: it looks great and handles well, yet comes only in 4.4 mm balanced, which will annoy single-ended users. Build is clean, nozzle a touch long for a slightly deeper seal, and overall ergonomics feel sorted.

Sonically, this is top-tier tuning. The FR hugs a neutral target with a tasteful sub-bass lift under ~150 Hz, midrange sits right where it should, and treble is polite rather than hot. The result is a warm-neutral, low-contrast presentation that’s easy to listen to for hours with solid imaging and separation plus a nice sense of front-to-back depth. The trade-off: initial transients don’t bite—bass and string attacks are clean but not snappy—so the technical “zing” is more good than great.

Against peers around $550, Mega5-EST slots between flavors: DUNU SA6 is warmer and sparklier up top but softer through the mids; Yanyin Canon 2 delivers chunkier, more physical bass and standout vocal texture; and Moondrop × Crinacle Dusk (on its analog cable) sounds cleaner, more clinical, with sharper bass attack and a tick more resolution. As a daily-driver tonality, Mega5-EST is excellent—the kind of curve that just feels “right”—held back only by middling incisiveness. Verdict: a solid 4/5 for sublime tuning, ergonomic ease, and relaxed refinement, with the caveat of the 4.4-only cable and merely moderate macro-dynamics.

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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.

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Mega5-EST (Bass Edition) shifts the original’s polite profile into a fuller, more satisfying listen. It keeps the smooth, relaxing, inoffensive tuning of the OG but adds extra oomph and slam down low, coming across warmer and bassier without mid-bass bleed or muddiness. Separation and microdetail take a small hit versus the cleaner, “vanilla” OG, yet the payoff is a more musical, comforting tonality that grows with time—great for R&B and jazzier sets. Upper-end extension is present and airy from the ESTs, but it’s subtle rather than sparkly; vocals and treble don’t jump out, they sit naturally in a well-balanced mix.

Where it flexes in tonality, it yields some ground in technicalities. The bass has proper quantity and impact, but texture and tactility are a touch smooth versus fresher peers that sound quicker and more resolving. If a laid-back, cohesive presentation is the goal, this tuning makes sense. If the wish list includes bigger dynamic contrast and crisper detail retrieval, options like recent hybrids and tribrids push ahead in separation, control, and bass definition.

Value is the sticking point. At around $600, compelling alternatives undercut or outclass it: budget-friendlier hybrids offer tighter low-end texture and more engagement, while mid-tier tribrids (e.g., Oracle MK3) bring cleaner balance, better bass control, and an overall resolution lift—even if they’re not as overtly bass-forward. For listeners craving a comforting, slightly warm, and easy signature, Mega5-EST (Bass) is genuinely enjoyable. For those chasing technical performance per euro, similarly tuned sets like K4-style isobaric DD hybrids or punchier tribrids present a stronger case.

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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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Hisenior Mega5-EST (Anniversary Edition) hits with a rare mix of slam and finesse: a single DD + 2BA + 2EST that pours out a chest-pressing low end yet keeps the mids and treble startlingly natural. The magic is in the space—not fake wide, but convincingly three-dimensional, with instruments stepping forward, drifting back, and snapping into place. Tracks that should sound “live” actually feel like a venue, with reverb and air rendered uncannily well. Call it “neutral” if the graph says so, but the tuning is exciting, never sleepy, and it scales from an affordable dongle/amp to tubes without losing its character.

Build and kit are delightfully weird in the best way: the cable is a stout two-wire with fixed 4-pin hardware, the case is hilariously oversized (and oddly practical), and the box stuffs in a mountain of tips—foam and multiple silicone sets—so fit is basically guaranteed. Cosmetic quirks (“Febos” branding on the shells, Anniversary shells looking plainer than the regular version) are the only eyebrow-raisers. None of it matters once the music starts: the imaging is knife-sharp, dynamics pop, and that sub-bass rolls in like weather.

At around $550—aka Moondrop Variations money—this thing doesn’t just trade punches; it outperforms for the same reasons Variations became a benchmark, then adds more body, more staging, more goosebumps. The verdict is not coy: this is a straight 10/10, the kind of IEM that makes changing tracks feel painful because the current one sounds too good to leave.

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Hisenior Mega5-EST arrives with a polished package, a rugged Pelican-style case, and plenty of tips. Comfort is excellent for long sessions. Sonically it favors an even-keeled, natural presentation with a touch of warmth down low. Bass has punch without the heavy, resonant sub-bass of its Dunu counterpart, which helps detail come through. The midrange is smooth and clear, vocals sit naturally, and treble offers good extension without fatigue. The big talking point is stage and imaging: the Mega5-EST throws a wide soundstage with strong layering and separation, though it’s a little more relaxed in focus than sets that push elements forward.

For competitive play the tuning is a mixed bag. In Apex Legends, the stage can feel so wide that subtle cues get a bit distant, and occasional low-end punch can blur separation during chaotic fights—performance sits around a B to B-. In Call of Duty it scores about a B- as well: immersive and impactful, but long-range tracking and lighter taps demand more effort. Valorant fares better at roughly a B, where gunfire pierces the mix and footsteps carry decent depth on tighter maps. Overall, Mega5-EST is a non-fatiguing, musical IEM that shines for music and general entertainment, and rates a B- on the Wall-Hack Certified tier list for competitive gaming.