Dunu Kima 2 VS Tanchjim Fission

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Dunu Kima 2 goes straight for the dopamine: a single dynamic driver with a DLC composite diaphragm and beefy magnet system that’s being compared to Falcon Ultra—only this time the tuning hits even sweeter. The limited green shells feel properly weighty, the 2-pin sockets are neatly angled, and the accessories scream overkill for the tag: a chic Dunu case, an interchangeable-plug cable that looks and handles like “flagship” kit, and the excellent Dunu S&S tips amid a pile of spares (plus a cheeky waifu placard). The kicker is the price: at around $119, this package reads like a prank on the mid-tier.

Sonically it pours like a great coffee—creamy and smooth yet bold—with an intimate stage that keeps everything “right here,” not stadium-wide, and somehow makes the volume creep up because the presentation stays clean and composed. The imaging punches well above class, vocals project with that “front-row, back-of-the-skull” focus, and the bass hits like a steady heartbeat—present, textured, never sloppy. It’s the kind of single-DD tuning that makes multi-driver sets feel fussy: refined treble, lively macro-dynamics, and zero harshness. In short, a value nuke that can bully most $100–$250 competitors on sound alone—and with this cable and accessories, there’s barely a reason to look elsewhere.

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The Tanchjim Fission is an absolutely spectacular IEM that feels and performs far beyond its $129 price tag. It comes loaded with a ridiculous amount of customization, featuring three interchangeable nozzles (stainless steel, titanium, and brass) and a four-way tuning switch, creating a potential 12 different sound combinations. The entire package feels flagship-tier, boasting an excellent interchangeable cable system with 3.5mm, 4.4mm, and USB-C terminations, a waterproof bag, and even a keychain tool for adjustments.

After extensive testing, the definitive "cheat code" for the best sound is using the brass nozzles with the tuning switch set to Pop mode, which seemingly bypasses internal circuitry for a pure, direct sound. This configuration delivers exceptional clarity and a surprisingly wide soundstage, though they are not bass monsters. The fit is excellent, passing the "pinky test," and the build quality on everything from the IEMs themselves to the accessories is exceptional.

While not every combination of nozzles and switches is a winner, the sheer number of options ensures you can find a sound you love. For the price, the value is unmatched, feeling like a product that should cost $279. It comes as a full recommendation, offering a premium, highly tunable experience that is arguably one of the best deals in the IEM market, cementing Tanchjim's reputation for making no bad gear.

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Dunu Kima 2 keeps it simple with a single dynamic driver and a design that punches well above its price. The CR Edition in vibrant green looks unique and feels premium: a compact metallic shell, recessed 2-pin, and a tasteful gold nozzle that fits comfortably for long sessions. Accessories are stacked—loads of tips, shirt clip, cleaning tool, and DUNU’s quick-swap cable (3.5/4.4) that changes in seconds—plus a leathery cup-style case that’s genuinely excellent. Overall packaging and build quality come off as impeccable and thoughtfully executed.

Tonally, it leans a touch bass-light at times, but the upper mids, air, and detail impress for the money, delivering a clean, even, and musical presentation with pleasing imaging and soundstage. Compared with bass-heavier or older-school V options (e.g., Titan S), this tuning sounds more cohesive and refined; versus costlier sets like Falcon Ultra, it offers a similar sense of open, airy presence at roughly ~$80 less, and it avoids the occasional bass oddities heard on some rivals (e.g., DaVinci). Not a basshead pick—though a small EQ lift near ~100 Hz can help—this is a chill, vocal-friendly set that shines across genres and even light studio work. With its great value, standout accessories, and tasteful tuning, Dunu Kima 2 earns a full recommendation as a bang-for-buck daily driver.

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The Tanchjim Fission presents fantastic value right out of the box, largely thanks to its inclusion of a high-quality USB-C DAC cable with 3.5mm and 4.4mm terminations. The all-metal build feels premium, and the included cable is extremely silky and pleasant to use. A standout feature is the set of interchangeable nozzles that allow for sound tuning; the gold nozzle is the clear winner, providing the best balance, while others can make the bass less impactful. However, the fit can be a challenge for some as the shell lacks a pronounced lip, and the nozzles can be tricky to remove and replace.

Sonically, the Fission is extremely close to the more expensive and beloved Tanchjim Origin, offering a smooth, energetic sound with a tonality that is highly enjoyable. It provides a touch of warmth, pristine detail, and good air, making it a set that is easy to recommend and daily drive. When compared to other sets in its price range, it holds its own against competitors like the Dunu Kima (which has better fit and accessories) and the Kiwi Ears Quintet (which offers more bass), though the choice ultimately comes down to personal preference for tonality and the value placed on its tunable nature.

While it doesn't break the so-called "curse of the $150 IEM," the Fission is a strong contender and gets a full recommendation. Its few cons include a fit that may not work for all ears and a bass quantity that some may wish was greater. For those who value its specific sonic qualities, the excellent build, and the incredible package value with the included DAC cable, the Tanchjim Fission is a fantastic and competitive option that is very easy to enjoy.

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Dunu Kima 2 goes for a neutral-warm, relaxing tuning with a distinctly laid-back presentation—very much a chill listen. Resolution sits on the softer side, prioritizing smoothness over bite, so the overall vibe stays silky and easygoing. Fans of similarly mellow sets like the KiRA Ching or the Abyss will feel right at home with this approach.

The trade-off is in the mids: vocals can come across a bit weak and too relaxed, with less power and extension, and the 3–5 kHz region feels tame, so it’s not the most engaging or detailed take for vocal-centric listening. That said, the build and cable quality are excellent, and for those seeking an easy, non-fatiguing daily driver, Kima 2 makes a lot of sense—even if vocal lovers may want to look elsewhere.

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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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Dunu Kima 2 shows up at $120 with an accessories suite that punches way above class: a big, usable hard case, shirt clip, cleaning brush, shell “booties,” four full tip sets (including Dunu S&S and Dunu Candy), and a modular cable (3.5 mm + 4.4 mm). The cable’s paracord-sleeved lower half feels stiff and behaves differently from the supple top half, but microphonics are low and the QD swap system is convenient. The CNC stainless-steel shells are well-vented and sturdy; a tiny seam misalignment doesn’t affect comfort. Fit is easy—even on smaller ears—and isolation/pressure are handled well. Bonus flair: the acrylic character stand is pure fun.

Sonically, this is a mid-centric neutral tuning with tasteful sub-bass reach rather than boom. The bass stays accurate and textured, doing what the mix asks without spotlighting itself. Mids are the star: instruments separate cleanly and female vocals get a gentle lift without veering shouty. Upper-mids/treble bring a bit of shine for air and detail; generally non-fatiguing, though very treble-sensitive listeners at higher volumes may notice some bite on bright tracks. Technical chops are strong for a single DD—resolution and imaging match sets like EA500 LM, with stereo separation and a convincing 3D stage that scale nicely with good recordings.

Against peers, KZ Krila (all switches off) mimics the tonality but is harsher up top and less refined. Dunu Titan S2 plays it more V-shaped with extra treble energy; if that felt hot, Kima 2 is the calmer, more balanced pick. CVJ Aria (silver nozzles) sits a touch brighter with less sub-bass; the blue nozzles warm it up, but Kima 2 still has the better driver and vocal delivery. Think of it as a modern, slightly warmer, less shout-prone Starfield with a far better bundle. Verdict: a fantastic all-rounder and beginner-friendly choice if neutral with a vocal focus sounds right. Not for bassheads or sparkle-chasers, and the stock cable could be nicer, but overall it earns a firm “this is brilliant” for value, tuning, and usability.

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Tanchjim Fission comes in at $130 with a quirky onboard tuning dial that offers four bass positions—but every setting trends toward modest bass anyway, making the adjuster more novelty than necessity. The default “bass-max” profile presents that familiar single-DD contrastiness with a bit of dynamic punch, a slightly bright/forward tilt, and overall inoffensive treble. It never tips into harshness or sibilance, but the bass attack reads a touch pillowy and the whole presentation stops short of truly incisive.

In direct comparison, it’s more comfortable tonally than the spikier sets yet less engaging and less tight than the standouts, settling into a solid C-tier alongside other “fine but unremarkable” options. Resolution and imaging are serviceable, treble stays safe, and the included cable is surprisingly nice, but there’s not enough slam or bite to push it up the chart. Net result: a competent, easy-listen single-DD for those who value smoothness over excitement, with limited payoff from that bass dial.