Softears RSV VS TangZu Tian Peng

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Softears RSV breaks the usual BA timbre stigma with a natural, cohesive presentation that avoids the metallic edge often blamed on poor crossovers. Its tuning lifts the upper-mids/early treble just enough to throw vocals into center stage, creating a lively contrast against an otherwise balanced base. At higher volumes the treble feels smooth and correct—cymbal hits sound “right” without glare—while the midrange stays clean, forward, and free of bleed.

Technically, it’s above average but not a show-off: speed, separation, and imaging are tight, yet sets like SA6 Ultra or U12t resolve a touch sharper. Bass carries typical BA traits—quick, textured, but without dynamic-driver slam—though U12t still edges it for bass texture. Where RSV shines is vocal immersion and timbre, arguably among the best under $1,000; just note its source sensitivity at loud listening—pair it with a clean, capable source to avoid distortion. Not a pick for bassheads, but for vocal lovers chasing a smooth, lifelike top end, RSV feels special.

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The Tanchjim Fission presents a neutral, balanced, and clean sound signature that is also described as smooth and full. It offers a very natural and laid-back listening experience, making it a strong option for those seeking a safe, non-fatiguing tuning. The technical performance is solid for its price, with good detail retrieval and instrument separation, though it isn't the most dynamic or sparkly set available.

Tip selection is crucial, with recommendations for the Tri Clear or Final E tips to open up the sound, while the Spinfit CP155 can add a touch more bass. The included tuning switches are largely seen as a gimmick; only the middle silver setting is recommended, as the others introduce a significant sub-bass roll-off. The Fission excels with genres like rock, indie, acoustics, and classical at moderate volumes, but its lack of sub-bass rumble and extension makes it a weak choice for hip-hop, EDM, or rap.

Its greatest strength is its value proposition, as it is essentially a cheaper version of the Tanchjim Origin, sharing the same driver and sound profile for a lower cost. This makes competitors like the Moondrop Kato seem less relevant. However, when compared to other all-rounders like the Juzear 4U or Simgot EW300, the Fission faces stiff competition. The EW300, in particular, offers more bass, tuning variety, and similar technicalities for half the price, making the Fission a tougher sell unless its specific brand of smooth, neutral tonality is exactly what you're after.

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Softears RSV brings a 5BA recipe with a shell that’s handsome but larger than average, featuring a recessed 2-pin that can fuss with some cables. Comfort is generally fine, yet the size and wide body may test smaller ears. Sonically it’s a neutral-leaning tuning with clean mids and polite highs, but the presentation trades off texture, sub-bass weight, and upper-air sparkle. Stage feels spacious, extension is more average, and while the technicalities are solid, the current crop of mid-fi monitors has pushed beyond what this 2021 design delivers.

Stacked against today’s options, RSV gets pressure from several directions: Elysian Pilgrim hits harder down low with greater perceived clarity; Supernova offers a more natural tonality and better sub-bass; HiSenior Mega5 EST graphs similarly but adds a touch more air; even value picks like a “super mix”/EM10-style V-tune bring fun, slam, and engagement. RSV remains easy to pair and its upper-mids are tastefully set, yet vocals can feel a bit soft—more “fun and cozy” than pristine. At typical new pricing around the mid-$500s it’s tough to champion; catch it closer to $350–$400 (or a good used deal) and it becomes a very enjoyable pick for those who prize smooth mids over maximum bass grip and airy bite.

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TangZu Tian Peng arrives as a 1DD + 6BA + 1 bone-conduction hybrid around $630–$650 with a striking, oversized shell that still wears comfortably. The build feels premium: sturdy two-pin sockets, a handsome 4.4 mm cable with a reliable chin slider, and a generous accessory spread including Sancai/Noble-style tips and a genuinely luxury case. Packaging is a highlight—easily in the top tier of unboxings and a big part of the product’s appeal.

Sonically, performance sits in the “fine but middling” camp. The graph promises tasteful bass and controlled upper mids, but in practice the low end lacks impact—coming across a bit flabby—while the mids and treble are merely decent rather than crisp or pristine. Extra energy around 4–6 kHz and ~8 kHz can add hiss/edge, and the overall tone could use more warmth (think earlier bass rise near ~200 Hz). It’s an improvement over the discontinued Baji in air and detail, yet still feels short of expectations at this price.

In comparisons, alternatives like Symphony Ears Prestige (clearer tuning with better balance), Mangird/Xenns Top Pro (more pristine, better controlled treble), Shuoer YU9 (smarter bass rise), or even fun picks such as Punch Audio Martillo and the Zigge Crescent offer stronger value or more engaging sonics. The Tian Peng’s bone-conduction implementation brings some charm but doesn’t transform the experience; given the price-to-performance mismatch, this is a hesitant recommendation—worth a demo if the aesthetics and packaging allure, but not the go-to for pure sound quality.

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Softears RSV presents as a premium, well-finished all-BA set with five balanced armatures, a secure, slightly deeper fit and above-average isolation. The package feels thoughtful—nice case, multiple tips, cleaning tools—while the shells have a tasteful, dark flake aesthetic. Ergonomically it fills the ear a bit more than comparable models like Moondrop’s S8, but comfort and stability are standouts.

Tonally, RSV opts for a warm, laid-back Harman tilt: elevated sub-bass with restrained mid-bass, even mids with a touch more body than typical Harman, and an upper-mid presence that’s assertive yet not shouty. The treble is notably smooth and controlled—never sharp or sibilant—contributing to an unfatiguing, polished listen. For an all-BA design, the bass is punchy and clean, staying out of the midrange; the main trade-off is a stage that can feel narrower versus more expansive peers.

Against benchmarks, RSV comes across as the “gentleman’s” alternative to the more energetic Moondrop S8 and the livelier, deeper-reaching ThieAudio Monarch, while showing more consistent bass body and smoother treble than DUNU SA6. At roughly $730, it emphasizes balance and refinement over fireworks, earning a solid four-star verdict: extremely competent tuning and execution for those prioritizing maturity, comfort, and smoothness over maximum excitement.

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Softears RSV delivers a rare combo for a full-BA set: organic timbre without the plasticky edge. The bass carries sufficient weight with a mid-bass emphasis—tight and tasteful rather than earth-shaking, and understandably shy of a DD’s thump. Midrange separation from the bass is clean yet never thin; male vocals keep their body, while female vocals and instruments sound natural, relaxed, and true-to-life. Treble sits neutral and tame—enough sparkle to animate vocals and instruments, but not tuned to spotlight microdetail. Detail retrieval is above average for the price, though not a detail monster, and staging plus imaging sit comfortably slightly outside the head with competent placement. The overall takeaway is a beautiful all-rounder that prioritizes realism and balance over fireworks.

Against peers, RSV squares up closely with Thieaudio Oracle: choose Oracle for more dynamic bass, pick RSV for more organic mids and vocals. Versus sets like Moondrop Variations, RSV trades a touch of separation/analytical edge for fuller lower mids and a more lifelike tonal weight. It won’t chase the widest stages or the sharpest micro-etch, but the tuning and timbre are so dialed that technical trade-offs fade into the background. As the most affordable Softears model, RSV feels like a love letter to musicality: realistic tone, versatile tuning, and a presentation that simply sounds right across genres.