Tanchjim Fission VS HZSound Luna

Youtube Video Summary

Tanchjim Fission follows the brand's long-arc approach with a full bass arc and upper mids set just under Harman, yielding natural lower mids and balanced male/female vocal weight. A four-way switch plus three swappable, clearly labeled nozzles alter geometry subtly and nudge treble/texture, so cycling nozzles matters; in total there are up to twelve tuning combinations that stay coherent rather than gimmicky.

Compared with Origin, bass sits lower/back on the stage, freeing space for vocals and instruments; presentation is bigger and airier with better imaging and layering. Mids are more neutral in weight and closer to the open “Oxygen” style than the thicker, in-head feel of Origin, which helps EDM and mixed-genre playlists sound cleaner while avoiding mid-bass bloat.

Technical resolve is modest for the class: detail retrieval trails the stage/imaging strengths, and treble extension is good but not top-tier for a dynamic driver. Value is price-appropriate; pick the most resolving nozzle and consider lowering bass via the switch. The modular USB-C DSP connector and app add five sensible warm U-shaped presets—this brings real versatility—whereas a CS43198 “Luna”-type dongle tends to flatten depth, making the DSP path the preferable pairing.

Youtube Video Summary

Build and accessories on HZSound Luna revive the legacy of the brand with a 13 mm planar driver in a resin and alloy shell that feels solid, slightly weighty and generally well executed, backed by a modular cable, tip selection and case that make the accessory package feel genuinely premium. Despite this, the roughly 109 dollar price positions it on the high side for 13 mm planar sets, especially when similar sounding competitors undercut it, so Luna becomes much more attractive once discounts and big sale events pull the cost closer to the sub 100 dollar bracket where this driver class really belongs.

Tuning and tonality closely follow the familiar 13 mm planar template seen on competing models, but with a more natural balance than earlier attempts, thanks to a raised low end and slightly reduced treble that avoid the lean, thin presentation and planar timbre glare that can plague this driver type. The result is a bassy, upper mid focused shallow V that keeps coherence with the low end, avoids fatigue and gives popular music a thick, fun weight, yet voices do not sound as transparent as on more mid centric planars and the selective emphasis in the treble leaves clear peaks and valleys where different tracks may either sit comfortably or constantly remind the listener of that unevenness.

Technical performance falls in line with other 13 mm planars: clarity is good and imaging remains nicely defined, but resolution and overall capability sit a step behind 14 mm big brothers, and the stage is flatter and more intimate due to the emphasis on bass and lower treble rather than air and upper treble openness. Taken together, Luna offers a clear, bass boosted, timbre focused signature that will appeal to listeners who want a fun but controlled planar style sound without brightness or fatigue, while those chasing the most spacious staging, mid forward vocals or maximum value at full retail may find better options and should ideally target this set during major sale periods.

Youtube Video Summary

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.

Youtube Video Summary

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.

Youtube Video Summary

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.

Youtube Video Summary

The TANCHJIM FISSION comes as a single dynamic driver IEM in roughly the 100 to 130 dollar bracket, with a metal shell that feels robust yet lightweight and a very soft modular cable. The package includes multiple tips, three tuning nozzles, a dial for four sound modes and a USB C plug that unlocks the Tanchjim app, so there are a lot of tuning options even if the inclusion of only a pouch instead of a case and the familiar shell design feel a bit safe.

With the preferred combination of default dial position and silver nozzle the overall signature is basically neutral with a slightly vocal forward tilt. Bass quantity sits in a truly neutral zone with good punch and very solid bass dynamics, though the transition into the lower mids can sound a bit congested and separation could be cleaner. The midrange carries some warmth and note weight for male vocals while a steady rise into the upper mids around 3 kHz gives vocals and instruments clear presence without becoming shouty. Treble is tuned safely and naturally, with enough energy for cymbals and strings to cut through without harshness, plus just enough upper treble for a bit of air and shimmer and some welcome micro detail for a single dynamic driver.

Technical performance is generally good but more in the average range for this price. Detail retrieval and soundstage sit around class typical, with staging that leans a little intimate in depth but respectable left right stereo focus and imaging that makes it easy to place instruments. Compared with other recent sets in this bracket like the Yaksha, TRN Jaws or Juzear Defiant, this is a pretty decent neutral option but not the clear standout, especially with its more relaxed bass and others offering similar or better technical ability with more low end presence. Overall the FISSION feels like a versatile, neutral leaning daily driver that will appeal to listeners who value natural tonality, safe treble and EQ flexibility over big bass and showy technical fireworks.

Youtube Video Summary

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.