Letshuoer S08 VS Tanchjim Fission

Youtube Video Summary

Letshuoer S08 comes in a small but chunky shell that’s easy to seat and stays comfortable thanks to a slim nozzle and secure fit. The accessory pack overdelivers: a supple, screw-lock cable with flat 2-pin connectors and an included 4.4 mm plug, plus a simple but protective case shared with pricier Letshuoer sets. Build and ergonomics are rock-solid at the ~$100 mark.

Tonally, S08 leans bass-light with a touch of upper-mid restraint, countered by clean air and above-class technicalities. The graph looks friendly in the mids, but sub-bass could use more weight—which can thin out guitar body and blunt some cymbal impact. Still, the set sounds coherent, with nice extension up top and a presentation that’s easy to live with; a sprinkle of EQ on the low end and a nudge to the upper mids tightens everything up and pushes it toward “great.”

Versus peers, it’s preferred over the Letshuoer S12 thanks to a more relaxed treble; it also beats Truthear Hexa on bass presence and technical ability (fit quirks on Hexa don’t help). AFUL Explorer offers better sub-bass and comfort if spending a bit more, while Dunu Talos trades blows with a brighter tilt and higher price. NiceHCK F1 Pro is hard to recommend due to its 4–6 kHz glare, and the Simgot Singolo brings punchier upper mids and bass but slightly less sparkle/detail. Net take: a good-value planar at $100 (closer to great nearer $80), with minor flaws and clear upside with EQ—an easy recommend for listeners prioritizing balance, air, and comfort over sheer bass quantity.

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 Letshuoer S08 hits with a present, to-the-point delivery: tight, quick, and more “first-row” than lounge seat. Staging isn’t expansive, but the focus and planar speed make music feel energized without turning sharp. Transients snap, treble has some bite yet stays civil, and the overall tuning gives that dopamine kick missing from sleepier sets—engaging, not fatiguing.

Build and kit are surprisingly premium for the bracket: a comfy, small ovoid shell; a springy 4-wire modular cable with both 3.5 and 4.4 plugs; a screw-top, rubber-lined case; and a rotating tip wheel with “balanced” and “vocal” options. Connection tolerances feel tidy with the flush mount, and the silver finish looks cleaner than the stealthy black.

The kicker is the spec and price: a 13 mm planar driver at about $99 makes this a value play with real bite. Judged on price-to-performance, comfort, and accessories, S08 scores a solid 9/10—not a summit killer, but an easy recommendation for anyone wanting a lively, fast planar that simply sounds fun. Letshuoer keeps the streak alive; more of this, please.

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

Letshuoer S08 enters the sub-$100 planar crowd with standout build and thoughtful accessories. The compact metal shell looks clean and distinctive, pairing with a soft, well-behaved cable that includes swappable 3.5 mm and 4.4 mm terminations. The angled 2-pin plugs aid stability, the chin slider actually stays put, and the pre-formed ear hooks help the fit. Size is a solid medium; the body tucks in securely, though the front end is a bit bulky and sits slightly forward.

Tonally, S08 favors a warmer, bassier, more laid-back presentation. Treble shows decent extension but stays restrained through the upper-mids/lower-treble, yielding a thicker note weight with less contrast and delineation than brighter planars. Vocals come across more natural than the Tin HiFi counterpart, and high-frequency percussion (hi-hats, brushes, cymbals) sounds realistic and metallic rather than splashy. The weak spot is the low end: bass can turn poofy and a bit smeary, especially on dense mixes, and there can be a touch of sibillance at times.

Overall, S08 shapes up as the better pick versus the Tin HiFi DUDU/Duo on both build and tuning execution, but it’s not a runaway. For listeners wanting a warm, bass-tilted planar around $100, it’s a respectable choice. Verdict: 3/5 stars. If stronger, cleaner bass is the priority (and planar isn’t required), consider an alternative like the AFUL Explorer; otherwise, S08 makes the more compelling case between these two.

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.

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

Letshuoer’s S08 marks the brand’s anniversary with a thoughtful package: a supple modular cable (3.5 mm + 4.4 mm with a sturdy knurled lock), six pairs of tips (the wide-bore set trims bass if needed), and a pocketable hockey-puck case. The shells are CNC-milled aluminum—light, durable, and shaped to fit a wide range of ears with notably smaller nozzles than many planars. Spec-wise, the new 13 mm double-voice-coil planar is easy to drive at 26 Ω/105 dB, playing happily off laptops, phones, or DAPs. Comfort is a highlight: no hotspots, stable fit, and a resounding pass on the “tiny-ears test.”

Sonically, the S08 delivers a warm-tilted planar done right: sub-bass and mid-bass have satisfying weight and slam without muddying the midrange. Vocals and instruments remain clean and tonally correct, with upper-mids/treble kept relaxed yet still detailed thanks to planar speed—crisp cymbals and percussion texture without sting. Technicalities impress: strong microdetail and separation, accurate imaging, and an average-wide soundstage that places players precisely on well-mastered tracks. Crucially, the tuning avoids the “planar trap” of turning up the volume into fatigue; it stays smooth, musical, and non-fatiguing, and scales well with EQ if a bass-cannon mood strikes.

Against peers, it reads like a refined Hidizs MP145—even more relaxed up top, better accessories, a smaller shell, and roughly $60 less—while the 7Hz Timeless AE feels overpriced by comparison. The verdict is emphatic: a “you should buy this” rating. As a first IEM around $100 or a fresh flavor for seasoned planar collectors, S08 is a crowd-pleaser: comfortable, easy to drive, non-fatiguing, and musically addictive—an anniversary release with the chops to become a future benchmark.

Youtube Video Summary

Letshuoer S08 shows up as an easy recommendation for mixed gaming, balancing clarity and comfort with a tuning that’s smooth, a touch warm, and pleasantly velvety. Footstep reads and positional cues are confident across titles, and in Valorant it trades punches with the Dunu Titan S2 at the front of its bracket. More importantly, it tames gunshot harshness—if transients feel hot on sets like the Truthear x Crinacle Zero, S08 makes firefights less fatiguing without smearing detail. It’s a true do-it-all pick that plays well in Apex, Fortnite, and CoD, and it’s notably better than Letshuoer S12 for these uses.

For pure competitive edge, the Wall Hack Certified ranking keeps S08 around the same tier as the Truthear Zero rather than pushing it above—Zero still holds its own on raw performance. But S08’s safer, smoother tuning makes overall sessions more enjoyable and easier on the ears, especially during chaotic gunplay. If the priority is strong imaging and separation with a more relaxed top end, S08 is the favorite of its row and a confident, versatile choice that fits both gaming and casual music listening.

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

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.