Letshuoer S15
Intro
Today I am reviewing one of Letshuoer’s latest within their lineup of planar magnetic iems, the “Letshuoer S15”. Letshuoer is one of those brands that seems inclined to try something new, something different, possibly something that not many of us have heard of. This is the case with this wonderful new planar magnetic iem, further in the review I will certainly expound on that. Back to Letshuoer, there is also something different about this brand. From an outside perspective that is, and perception is reality of late as we’ve seen different tech housed within their lineups. I have very much enjoyed everything I’ve tried, tested, or owned from this brand.
Letshuoer
Shuoer Acoustics was formed in 2016 by Danny To and Jeff Wong. Together, along with a team of people, they’ve built their company into what it is today. You can read a little bit about some of these folks HERE. Letshuoer which began their journey branded as “Shuoer” has created many fine earphones that have truly stood the test of time. I myself have reviewed only three of their sets, the Letshuoer S12 Pro (S12 Pro Review), the Letshuoer DZ4 (DZ4 Review) as well as the S15 which I am reviewing here. I’ve also “tried” a few more of their more expensive sets that I simply don’t have the funds for, and I’ve walked away flat out impressed every time. I also own the Letshuoer D13 which is an underrated iem and a fun one at that. They have some massive successes in the business with the Letshuoer Tape & Tape Pro, the D13, Soloist, DZ4, S12, S12 Pro, EJ07, EJ07M, EJ09, the Conductor as well as the Cadenza 12 among many others. Each having its place among some of the great sets in their relative price points and each having its own special tech. Obviously, Letshuoer makes sure to exhaustively work on a product until it is finished and complete. I can respect that. Maybe one of these days I’ll be able to test out some of their high-end gear for review. Till then I’m very pleased with what I’ve heard.
S15
The Letshuoer S15 comes with quite a bit of fanfare as it’s a direct sibling of one of the most impressive and heralded series of planar magnetic earphones on the planet. The S12 was surely one of the biggest success stories in the entire audio world. Then Zeos came out with a collaboration effort and released the Letshuoer X-Z Review Z12 which was another smashing success. We got a couple different versions of those and then Letshuoer decided to trump them all with one of the better planar sets under $250 with the Letshuoer S12 Pro. To say that the S15 has a lot to live up to is an understatement. Another thing is that the S15 brings with it some skepticism because of the addition of what they called a “passive radiator” which was later explained that it isn’t a passive radiator at all, but instead it’s a pressure relief, but I’ll get into that later. The point is, the S15 better bring it. This is quite a price jump ($330) and it’s more than flirting with the mid-fi scene. The number of great sets between $300 and $400 is silly folks. We shall see…
Thanks
With that, I thank you for reading this review and hope it helps you out. Truly. That’s why I even do this, along with the fact that I love writing about the subject of personal audio. Before I dive into this review, I must thank Letshuoer for providing the Letshuoer S15 in exchange for a full review and feature at Mobileaudiophile.com. Let it be known, I receive nothing in compensation for this review or for any sales of any units of the S15. I am not affiliated with this company or any company that I review for. Please rest assured I would never bind myself to any agreement like that… Ever! Nobody has ever, nor will ever pre-read any review of mine. I would rather not review at all if that was the case.
Lastly, please understand that what I write are my thoughts, my experiences, and my words… end of story. However, we all have our own biases and in a subjective game such as reviewing, those biases can surely appear in my writing, I am a human being after all. I promise to put you (the buyer, consumer, hobbyist) first and tell you my exact feelings to the best of my ability. With that said, the Letshuoer S15….
Purchase Links:
S15 Pros
-”HeyGears” build is dope (this can also be a “con” for some)
-Unboxing is awesome
-Cable (Modular)
-Fit & ergonomics
-My opinion: the best planar to date that I’ve heard
-Very dynamically expressive sound (big macro-dynamics)
-Impressive musicality
-Large quantity bass & large quantity of control
-Smooth midrange with nice timbre
-Non-fatiguing treble region
-Holographic stage, nice stage size
-Sound Layering is great
-Imaging is fantastic
S15 Cons
-The price will be too much for many fans of the series
-Could use a hint more treble emphasis
-The build and look will not be for everyone, especially at $330
-May be too aggressive sounding for some
Gear used for testing
–iBasso DX240 with Amp8 MK2
Packaging / Accessories
Unboxing
Letshuoer does a great job of packaging their earphones. Well, at least any of the sets I’ve checked out. The S15 is no different. I love how Letshuoer got kind of creative with the unboxing, it just adds an extra short-lived element of anticipated joy. Okay, maybe it is just me. Anyways, the S15 arrived at my house in a good size rectangular box covered in a thin cardboard sleeve. There really isn’t a whole lot to say about the look other than there is a design on the front similar to their promotional material.
Anyways, remove the sleeve and you are presented with an even more utilitarian box. Open the box top and you’ll see the dope looking Letshuoer S15 earphones sittin’ pretty staring back at you in cardboard/foam cutouts. Lift up the foam layer and you’ll see an envelope with some reading material as well as a poster of the same promotional image we’ve seen relating to this set. So, as I was looking over the box I realized after far too long that there is a drawer on the lower half of the box. Open the drawer and you’ll see the case as well as the modular cable adapters also sitting in foam cutouts. Inside the case you’ll see the cable as well as the eartips. Not bad Letshuoer! I feel the contents are good enough for a higher price tag.
Eartips
So Letshuoer added in six sets of tips in total. Or two different varieties of tips as well. The first set of tips is a semi-wide bore set of white silicone tips (S, M, L) with a pretty stiff stem and a firm flange. I’d say reminiscent of KBear 07 tips but with a slightly thinner stem and slightly less firm flange. They are very good tips. The second set of tips is a light blue set (S, M, L) of wide-bore tips. These are actually the tips that I used the most during my time with the S15. They’re a wide-bore, shallow fit, firm flange type of tip and they look great on the S15. More importantly they actually sound good too with the S15. I’ve used about every set of tips in my arsenal on the S15 trying to find the best fit. Some of my favorites include the KBear 07, JVC EP-FX10, and Divinis Velvet. However, for review purposes and because the fit is silly good, I simply chose the included wide-bore tips. They work like a charm for me.
Carrying Case
The carrying case is a hockey puck styled case with a threaded lid that simply screws on & off. The look of the case is not the most luxurious as it’s made out of plastic.I do like the coating they use on it. It’s this matte blue color, similar to the S15 shell, and has this rubbery feel that is very nice to me. I have no reason other than that of why I like it. It has a satisfying feel, for whatever reason. Probably not the most robust and Letshuoer probably could’ve sprung for a better material for the case but… oh well. The truth is, I haven’t used a carrying case in years but for storage at times. So it doesn’t bother me too much. However, for those who value a good case just know that it isn’t too large, the threaded top unscrews with ease (shocker), and you may be able to fit a small dongle dac inside as well.
Cable
The included cable that came with the S15 is a very nice cable. Similar to the cable provided with prior iems but this one is a bit fatter and also has modular connections (awesome). To be exact, the cable is a .078 2-pin 216 strand mono-crystalline copper cable which comes equipped with 3.5, 2.5 & 4.4 right angled modular connectors. I don’t find the cable to be microphonic at all and find zero reason that anyone would “need” to replace it or cable swap. It is a very nice-looking wire that pairs well against the silver and baby blue of the S15 earphones. The color is a braided mix of brown and white and I really dig it.
The actual function of switching out the modular connectors is about as easy as it gets too. Simply line em’ up and push the connectors on. Now, not all modular connectors are created equal. For instance, I find Letshuoer’s cable connector to be much better than something like the Tripowin Noire for example. The connection is tight and rigid and never comes off. The included cable also has durable enough and pretty robust hardware for a set at this price. I think this is a nice addition and I’m glad to know that Letshuoer understands that a good cable is important to us hobbyists.
Build / Design / Internals / Fit
Build Quality
This is one area that may be a point of contention for some of you. In fact, I see it going one of two ways. First off let me explain. The Letshuoer S15 is made by “HeyGears” by way of 3D printing. HeyGears is a well-known company who has assisted many brands with such needs. The material is advertised as a “3D printed Resin”. But not like the typical resin you’d see nowadays… Obviously. This is a very cool feeling & matte baby blue colored material that almost has a rubbery feel to it. Just like the material used on the Letshuoer DZ4. Same stuff. I think I like it. It doesn’t get cold, it’s super light, and it looks very cool in my opinion. However, I said this’ll likely be a point of contention. I do fear that many folks will see the price of the S15 and wonder why there isn’t a more robust material. That said, I really think it is a trendy and durable material that many will enjoy. There’s also a small vent hole towards the back of the unit as well. The nozzles are average in length and are made of the same material as the Shells. Again, the entire acoustic structure and internal cavity has been 3D printed to specific parameters to keep the tuning principle intact. It’s a good build, whether one hates it or not. It’s obviously durable, impervious to corrosion or attack from the elements, it’s very lightweight and also, it feels good to the touch.
Design
This is an area that I would’ve thought would garner across-the-board approval. Apparently not everyone feels this way. Maybe my eye isn’t as good as I thought it was. At any rate, I think this set looks really cool. I love the understated, non-logo havin’, simplistic yet modern design language. As you can see the faceplates are made out of all alloy. That’s “Anodized Aluminum” to be exact. The faceplates are all silver in color with raised above flush little waves creating a pattern on the faceplates. Those patterns are CNC carved and then sandblasted & anodized. The Shells themselves are 3D printed, with a matte baby blue color and an ergonomic shape. Listen, in the looks department it isn’t the best look I’ve ever seen but it also isn’t even close to the worst. For me personally, I think it looks pretty darn sweet but some folks on Facebook remarked that they didn’t appreciate it too much. I suppose it only matters to the person buying them.
HeyGears crafted shells
Letshuoer Promotional
The S15, after thorough optimization of its chamber structure, strikes a perfect balance between form and function. In collaboration with the class-leading 3D printing company, HeyGears, the shell is crafted to ensure a lightweight and comfortable wearing experience. The faceplate is made out of aluminum-magnesium alloy which is CNC precision carved, sandblasted, and then anodized. Not only does it look unique, but it is also resilient against scratch, smudge, and everyday use.
Internals
This is once again (for whatever reason) another point of contention. First off, Letshuoer went with a 3rd generation 14.8 mm Planar Magnetic Driver as well as a 6 mm Passive Filter Module which actually isn’t a driver or a passive radiator like some (me included) thought it was. Well, if you read their promotional at the beginning that is what they called it. Obviously, a passive radiator didn’t make any sense in this application, much the same as the Letshuoer DZ4 where we also had some groaning from some people screaming that they were being lied to. Or something.
PFM
The “R-Sonic Passive Filter Module”, or “PFM” simply acts as a pressure relief for when the sound pressure level begins to rise. That’s it. When the SPL is a bit stronger than the PFM membrane is activated which ultimately pushes or pumps the energy away and out of the vent holes within the same acoustic cavity. This also is said to reduce the excursion or movement of the actual planar driver which will also reduce listening fatigue for these situations, or so it is theorized and patented. When the SPL is not enough to activate the PFM then it will simply sit idle. There ya go, it all makes sense. I simply think there was some confusion when the S15 was first advertised. I fell victim myself and posted that this set came with a passive radiator. Now we know…Moving on.
Thankfully everything seems to work as intended and I get no undue resonances in the sound field. At least nothing which I can hear. Also, this set sounds great in my opinion, so I think Letshuoer is doing something right. Letshuoer also uses “dual sound tubes” which is a well-known method of filtering different parts of the frequency allowing each 3rd of the mix to come across coherently.
R-Sonic Passive Filtering Module
Letshuoer Promotional
To achieve a more natural and comfortable sound reproduction, LETSHUOER’s research and development team poured every ounce of their technical know-how into combining the 14.8mm dual chamber planar magnetic driver with LETSHUOER’s proprietary ‘R-Sonic’ PFM technology. Breaking through multiple technological barriers, the S15 is another outstanding entry into LETSHUOER’s planar earphone roaster, which delivers an unparalleled audio experience.
Dual Acoustic Tubes
The dual acoustic tubes filter the sound on different frequency bands, allowing the highs, mids, and lows to shine through proportionately and seamlessly. Every detail is carefully tuned, presenting an excellent balance of audio quality.
Fit / Isolation
The Letshuoer S15 takes a minute of fiddling to get the right fit. This all depends on the eartips that I choose though. Using a fatter and more rigid shallow fit tip like the blue set that comes with the S15 I have zero issue at all. In fact, they fit rather perfectly. As I say in every review; I don’t know how they are going to fit in your ears. This section is almost pointless for review purposes. I will say that the S15 does have an ergonomically polished build that does seem to nestle right in my ear very nicely. As far as isolation is concerned the S15 are simply average. I don’t feel they attenuate outside noises but at the same time they do block out enough. There really isn’t any sound leakage to the outside world either. All things considered; this is a solidly built set that has comfort as a priority.
Drivability
Mobile Listening
Letshuoer states that the S15 has an impedance rating of 30 ohms and a sensitivity of 106 db’s. What this translates to is a set which can get adequately loud, even on less powerful sources. Don’t be fooled though, there is some benefit to giving this set some more power. In fact, I don’t think you receive the full potential of the S15 without at least decent output. By decent I mean 100mW or more I would say. Best guess.
Listening with the IFi Go Blu presented a nice sound on 4.4 balanced. I felt it was a more open and more precise sound then listening on 3.5 single ended, to a slight degree. The synergy is great with the Go Blu’s CS43131 dac chip and its good power output. The neutral leaning warmth of the Go Blu reacts wonderfully with the S15. Using the Moondrop Dawn 4.4 I found a great pairing too. The power is enough to really energize the planar magnetic driver and also produces very nice synergy. However, I actually liked the warmer Hidizs S9 Pro Plus (ES9038Q2M dac chip) which gave me a relatively smooth sound that has great dynamics with the S15. It’s a good mix of tonalities. Of course, this determination is subjective to me.
Daps
Listening with either my iBasso DX240 (ES9038 Pro chip), or my Shanling M6 Ultra (AK4493SEQ chip) I got two different and distinct sounds that married well with the S15. I’d say I like the M6 Ultra a bit more as it has that warmer, smoother and velvet sound while coming across very resolving and dynamic. I felt there was a hair more of a metallic tinge to the very crest of notes with the DX240.
At the end of the day
I feel, so long as you have a decently powerful dongle dac you should be fine with the Letshuoer S15. This is not one of those planars which needs a million watts of power to shine. Yes, the more you can give it the better, but I do think there is a cap to that. Granted, I’m sure the S15 can handle a lot but the benefits it seems begins to diminish at a certain point. This is a nice sounding set that seems to react and synergize pretty well with most sources.
Sound Impressions
Note: all critical listening was completed after roughly 25 hours of burn-in. To be honest, I really don’t know if this helped or not because I loved the sound out of the box. So, I don’t know if burn-in is really needed. I usually complete at least 75 hours on most sets, but during my check up on the S15 I found no real reason to go any further. I used flac or better music files for all listening, I used the stock shallow bore tips, stock cable and I listened mainly on 4.4 balanced on each source. Primarily the Shanling M6 Ultra.
Great way to hear my music!
Listening to the Letshuoer S15 is a great way to hear my music folks. I don’t want to come across as though this is the best thing on planet earth, but the sound is ridiculously good. Let’s just get that out of the way, no confusion. The S15 is a very nice sounding set to my ears. Does the S15 compete with other sets of different driver configurations within the price point? Now that is a more nuanced conversation. For me yes, but for you? As far as planar magnetic earphones go, I find the S15 to be engrossing and unlike any I’ve ever heard. Of course, the price is definitely something to consider. So, another question I will try to answer is if that cost is reflective of the S15’s worth. Again, very nuanced and not simply a cut n’ dry answer. Also, these are my own personal and completely subjectively objective thoughts and my own preferences. So, I will do my best to explain what those preferences are so you may have some sort of a gauge.
What does it sound like?
The sound of the S15 comes across as warm/neutral, or warmer with a slight tilt to neutrality. It’s warmer listening with the M6 Ultra and slightly closer to a neutral sound with the iBasso DX240. However, there is always that hint of cozy warmth to add fullness and realism where needed. If I were to categorize the sound, I’d say it’s a warmish U-shaped sound or even a warmer W-shape sound. Somewhere between the two maybe.
The sound has this solidly lean-lush note weight that carries good but smooth note definition throughout. I’d call it lusher than it is lean. Some areas of the mix are more defined than others though. I find the sound to be punchy, thumpy, but also structured, never sloppy, and decently detailed too. Depending on the track being played and what area of the mix we are talking about of course. Resolution is very nice for the tuning. The stage leans more holographic in its presentation than it does flat like most planar sets. Imaging is good and sound layering is fantastic. Macro-dynamics are full sounding across the board and even lower volume micro-dynamic shifts come across agile and clean.
Nothing inherently bad
I don’t hear anything that jumps out at me as inherently bad. Possibly those who yearn for an ultra lean, snappy and ultra detailed response may not appreciate the S15 on every track. Maybe those who want a bright and crisper sound will want to keep looking. But honestly folks, I really have enjoyed my time with the S15. I think that (for the most part) the sound is smooth, coherent and well controlled. The sound is transient swift yet there is evident fullness within the body of a note. This note weight and clean warmth helps the atmosphere in my music to bring some emotion to the sound. The biggest thing is the warmish and effortless musicality that I hear which invades my senses folks. Probably not for everyone but for those that enjoy this type of sound… You’ll be impressed.
Quick look: Sound between the 20’s
The bass is surely emphasized and holds a large part of the focus of this set. I would say we have a mid-bass emphasis, but rest assured the sub-bass and mid-bass do well to share the lower half of the mix. It’s pretty big and pretty fast and able to handle fast bass passages fairly easily. The beauty of the bass is the full and round note delivery though.
The midrange is more forward than it isn’t with great presence in the mix. There’s some depth to the midrange and some good and dynamic energy that is wide and immersive for vocals and instruments. Males have plenty of authority and aren’t really recessed. Females are a hint more forward; they have some warm bodied shimmer with a softer vibrance but without going overboard. Females are so very easy on the ears.
The treble comes across as softer in note definition but nicely emphasized. I find the treble to be a very nice piece to the puzzle without ever adding any peakiness, glare, or sibilance. The treble will not please treble heads or those who struggle hearing this frequency, but it does lift up the rest of the mix quite well, in a coherent way. Or just enough. The stage is wide and even has good depth, again, Imaging and layering of those images is really great for a planar. Also, per the softer, fuller, warmer tuning… Detail retrieval is better than it should be.
If this is all you read
If this is all you read, then just know that (in my opinion) the Letshuoer S15 is simply one of the best planar magnetic earphones that you can buy for under $400. The entire mix is accounted for and well-tuned with plenty of vibrance, emotion, and yet capable of a very nice technically adept sound.
Bass Region
This is a very nicely done bass region for a planar set. No doubt. I consider planar bass to be a good middleman between a leaner, speedier & drier balanced armature type low-end, and the organic boom and reverberant authenticity of a dynamic driver. Folks, the S15 is the epitome of this sentiment in my opinion. Truly it has a deep enough grumble and rumble to hit those decently extended sub notes, and it has tactile speed and punch as well without coming across too knife edged, artificial, bloated or muddy.
Absolutely smitten
There’s this elastic and rubbery malleability that adds realistic weight and body to the texture of a bass drop, bass guitar riff or kick drum boom etc. There’s also a warm roundness which holds the Integrity of the timbre through a note and releases cleanly after the efficient sustain forming a resolute note definition. It isn’t falsely over-saturated, over resonant, it isn’t fuzzy, or pillowy, and isn’t too vibrant in its tonal color. It isn’t dry, and damn sure isn’t weak. This bass is nicely separated with almost the same type of naturally occurring timbre of a DD. Really. Not quite there but similar to my ears. At least on the initial attack that is. The bass has a very clean and hard lined attack edge at the crest of a note and a short lived sustain. I don’t want to oversell but I also don’t want to undersell, and so I may be in a precarious situation with my words. However, I’m absolutely smitten with the sound of the S15, and the bass is one 3rd of the reason why.
Sub-bass
The sub-bass reaches deeper than I thought it would be able to while still being able to coherently deal with the rest of the mix. The sub-bass strikes a great balance of cohesion and dynamic amplitude. There is a dynamic balance on this set and the sub-bass quite literally is one of the cornerstones or foundational anchors to that dynamic balance with the rest of the mix. Now, the S15 is certainly capable of some rumble down low and has plenty of palpable haptic feeling to the sub-bass which comes through to the listener as vibrational energy. It adds some nice depth to the sound. I still wouldn’t exactly equate the sub energy of the S15 to the feel of a good Dynamic Driver, but in some ways… it’s just as good. In its own planar way.
In the track “Groove” by Ray Wylie Hubbard, the S15 gives a gravely and very rumbly performance as the bassline sets the tone for this track. I use this song probably more than any other to describe bass in my reviews. I know what it’s supposed to sound like, I know what deep sounds like on this track, I know how tight the reverb can sound or what it sounds like when it’s muddier and sloppier. The S15 takes this sonorous sound and gives a good low-pitched rumble that doesn’t have any overhanging and lagging harmonics. Instead, it is easily distinguished and discernable with a bigger than moderate low toned and tight 3D presence.
Mid-bass
Moving on to the mid-bass, I do feel the very slight majority of the low-end volume is in this region. The mid-bass has some real nice slam with a very robust and warm boom for bass drops and a good and full droning growl for bass guitars. For the most part anyways. Kick-drums like those in “Billie Jean” by Weezer (Michael Jackson cover) sound very hard hitting and decisive with a booming and hollow thud that’s met with a nicely tacky edge. I don’t hear as much of the resulting decaying harmonics from the kick drums but the S15 sounds really nice to my ears. The S15 has great cohesion and depth to the bass and sounds very good against the neutral/warm backdrop of the rest of the mix. It’s a hard-hitting density that couples well with the lush airiness in the overall tuning. It’s agility-rubbery-textured meets rigidity & bold authority.
Mid-bass cont…
Another track is “Feelin’ the Miles” by The Wilder Blue which has a warmer atmosphere to it. There’s a sick bass guitar riff which literally carries the tune. I love how the S15 can replicate the fullness of this instrument and does so with great tonal color and actual dimensionality. There is something to the sound which is palpable enough to mimic proportions. It’s full, meaty, it’s emphasized too. However, that emphasis does not overtake the rest of the mix. The percussive elements on this track are many and each is displayed very cleanly, with an organic & lush try at precision. I also like “All My Life” by Lil Durk as the mid-bass has a well composed boom and then gets out of the way. It colors the mix without clouding the mix and not to a detriment. The bass drop on this track is hard and not pillowy at all. It’s structured and not muddy. It’s macro-detailed and not one-noted. Smoother than it is crisp and has great note weight without adding a veil to the sound.
Further thoughts on the bass region
From the moment I put this set in my ears I have enjoyed the low-end of the S15. I would call it the “darling frequency region” of the S15, but that is very much debatable. I love how complete the bass makes the S15 sound. Never too much to become gaudy and over-resonant or over-saturated, but big enough to have borderline Bass-Bois bobbing their heads. Not quite bass head to me though. The bass is simply a well-represented & fun sounding bass. Also, it isn’t technically deficient. I feel this bass is great for fans of hip-hop, edm, even jazz and any other genre which relies on a dense and authoritative bass region but doesn’t go overboard.
Downsides to the Bass Region
As far as issues which may arise in the minds of some of the folks in the hobby, I’d say that for sure the S15 may have too much low-end emphasis. Those people who enjoy an ultra-quick, drier and transient rapid type listen will feel this is a little too much. I’m sure. The other thing which may be an issue in the bass range is that there are sets in the price point which can do a fun type of bass a bit better. There are DD’s which can perform a slightly more organically authentic sound and can do so with more feel to the sound and boom. However, I say that but what the S15 does is it carries this low-end in a way that has some measure of exactness without losing its tonal color or heft. There is density to it and a juicy element that still holds tight to its depth and roundness. But there’s also a measured approach to the bass that can easily take faster bass tracks just as well as it can perform a booming bass drop. It’s flexible, rubbery and It’s a nice bass for a planar set folks. Who am I kidding, it’s a great bass for any driver configuration.
Midrange
Oh, my friends, I love this midrange! What an inviting and sultry sound that holds my attention so well. The midrange is the type that sounds forward in the mix with plenty of warm air to the sound yet still comes across with some splashes of healthy separation. I call it U-shaped, but the midrange gives me doses of a W-shape sound. The mids are more neutral than they aren’t but keeps this slight ubiquitous warmth which adds so much to the sound. The nice thing is that this warmer airiness or lush openness is not at the expense of note weight. In fact, the weight to the midrange sounds very natural. Of course, this is my interpretation of what “natural” sounds like. Perhaps just a tad less weighty than natural but certainly in a “lean-lush” way with a very technically adept sound that is just as transient-swift as it is atmospheric.
The crazy part is that the bass doesn’t add this veiled weight to the sound. The S15 depends solely (it seems) on its natural body which completely separates this set from other planars in my opinion. The timbre is very nice, especially for a planar iem. To be completely honest, I absolutely dig the vocals here! I mean I REALLY ENJOY them! Now, it isn’t the Penon Fan 2 type of warmth, forward, & meaty vocal, or the Aful MagicOne type of holographic neutral forward vocal either. Instead, it’s this type of delivery that manages both smoothness & non grainy crispness. I feel the S15 does whatever the track asks it too with hints of coloration, dense malleability, and a completely musical character.
Lower-midrange
As I said, the low-mids have some carry over from the bass region which adds just enough body to a male vocal for me. I would usually like a hint of more warmth here but I’m not complaining because most male vocalists come across with good presence in the mix and are prominent while maintaining good placement. Listening to the raspy voice of Chris Stapleton in the track “Higher” (from his latest album) shows off the smooth texture of Chris’s voice in less dramatic parts of this song. As his voice raises, the natural knife edge to his voice comes out but the S15 maintains its control over the timbre on these occasions. I don’t hear that planar electric fuzz and grain at the note edge, but instead I hear a constrained and controlled intonation to his voice with a smoother and more round note delivery.
A lower pitched baritone like Avi Kaplan in “On My Way” has a very nice sound as the S15 keeps a strict control over his voice with a deep and crisp sounding vocal treat. His vocals simply sound clean. Higher pitch male voices like Noah Kahan in “Bury Me” sound a bit more forward in the mix and have a nice sounding intensity or glimmer, while his voice also sounds a bit leaner than lower pitch vocalists. There’s always a certain density or solidity which brings an otherwise artificial sound (Noah’s voice) back to earth. The sound is more neutral on this track and some of the lower pitch warmth is not affecting his voice as much. His voice almost has a luminance to it which isn’t perfectly natural sounding but very nice to listen to. Also, what’s natural? His voice sounds amazing folks.
Upper-Midrange
The upper midrange is where most female vocalists reside as well as a lot of instrumentation. As far as female voices, they come across more forward in the mix than males though the difference isn’t great. You know what, I just have to say before moving on… Female vocalists sound freakishly good for a planar iem. In fact, I’ve never heard a planar sound so full and so enveloping in my time in this hobby. Okay, carry on… Females have some shimmer to them and mostly come across lushly open (if that’s a thing… it is now) and have some added vivacity while never carrying over into harsh pinna glare. I find the S15 does an admirable job providing a robust female voice with actual texture to them. This is not always the case. Some iems will come across even warmer and they will have that juicier sound and they will have that great texture. However, the S15 does the same (juicy, texture) but also with a more naturally open sound, more non-brilliance airy while still maintaining that smooth and engaging quality. Females still have that lean-lush but also solid note weight and sculpted smooth presence that works very well.
Eerily Mesmerizing
Gracie Abrams has a more soft and feathery voice on the track “Will You Cry?”. The S15 is well able to surround her voice and give it some weight while holding tight to that feathery and lite inflection and tone. She sounds nice. Taylor Swift sings “The 1” off her “Folklore: the long pond studio sessions” album released recently. The S15 gives Taylor a black canvas to work on as her voice is almost hauntingly sweet and smoothly defined with a very nice body to her vocals. Her tone is dimensional, natural in her intonations, but eerily mesmerizing and emotionally inviting. A lone trickling piano arranges the melody along with slight percussion etc. The piano notes are bouncy, vibrant enough, but are also stretched out in body which arranges the mood of the song. Like reminiscing of “what could have been” but with a smile on her face. This isn’t a song review though. However, I love the S15’s ability to convey not just difficult and fast paced tracks, but also slower and more emotional tracks like this one. Her voice is very melodic with the S15 having almost perfect tonality for this song. To me, females in general sound very nice. No doubt it won’t be for everyone (my constant disclaimer), but the S15 will please many.
Instruments (in general)
Piano in this region has a nice root tone and the residual harmonic resonance sounds nice to me. It sounds real to me. There is a 3D type placement of the stage and a 3D rendering of each instrument and voice which is very revealing. Acoustic guitar has a natural sound with easy to pick up details especially on acoustic tracks. Electric guitar is easily digestible without that sheened-out glare. Even sustained in distortion I find it very enjoyable and never really harsh. Percussion has a very nice luster in most any track. Especially snares which pang with a snap to them. Cymbals have that bodied and warm “chisk” & tambourines (for the most part) chime and shake with good energy. Violin goes from nicely brassy and bright with a sharp edge to warm and almost wooly, again with adequate note weight and definition. Friends, I’m not going to go through every random instrument I’ve heard. These are just very broad and general descriptors which come from my notes taken from songs on my Playlists. Just know that I didn’t hear anything outright “off” to my ears.
Downsides to the Midrange
When picking apart the midrange to find subjective gripes or issues I suppose I could say that there are instances when the right track can become a bit too sharp. Too few and far in between to call this a “con” for me but for someone else it may be a deal breaker. Especially for those ultra thick, warm/dark midrange lovers; they may not appreciate the overall tone & timbre of the S15. This isn’t the most technically savvy and most detailed midrange. Though I would say it is just fine. However, I could see some folks wanting a leaner, snappier, more technical midrange. Some folks may want a longer sustain to the harmonics that planars don’t necessarily have all the time. The tighter transient behavior of the S15 actually can come across atmospheric though. Of course, it isn’t perfect. However, at the end of the day I think the S15 sounds great in this region. It’s warm/neutral and lean-lush note body has great note definition, above average resolution and is great for detail retrieval.
Treble Region
The treble presents a slightly less lively top-end but still has a pleasant amount of emphasis which balances very nicely with the rest of the mix. Almost leaning dark but is saved by some milky luminance that adds just enough smooth levity to the sound. However, I would not consider this a sparkly or brilliant treble region. Treble heads will want to look elsewhere. Still, there’s good coherency of sound between the treble, mids, & bass. I feel it is lifted enough to add a mellow but natural vibrance to the upper mids, some snap and energy for percussive instruments and is able to slightly uplift the overall sound. Enough so that I wouldn’t call it darkish or subdued. I’d like to say it’s just enough without ever becoming fatiguing to my ears. In fact, even when raising the volume, I didn’t hear that screeching treble sheen or shout. Letshuoer made sure to tighten up this region with smooth compactness. So no, it isn’t the most boosted, but it is a nice sounding and musical top end. I feel there is some improvement in harshness from previous versions, like the Letshuoer S12 and S12 Pro. I hear an evident reduction of actual treble air compared to those sets but what I’ve gained is note structure and better bodied note definition.
An improvement
The highs on the S15 have very good resolution and they come across with good bite. There is ample energy that is rewarded with decent haptic feedback which does add another dimension to my music. Don’t get me wrong, this isn’t a treble heads paradise, but it is a marked improvement (in my opinion) in the Letshuoer lineup from earlier sets. The treble comes across a bit smoother and not as edgy and grainy over long periods and everything is just “kept in check”. There is a healthy balance of warm shimmer with good treble presence and a nice ability to expose and highlight the subtleties within a track. Not a detail monster though. It’s more lush, authoritative in its richer note structure which isn’t exactly a precursor to detail retrieval. Still, it isn’t bad by any stretch. I feel for those people who would’ve liked less treble emphasis than something like the S12 Pro would likely appreciate what Letshuoer did on this set. There isn’t any forced resolution or any pushing of the treble quantity in attempts to add some air, extension, or details, which at times can make the sound artificial.
Examples
The great thing about this set is that the treble fits the other frequencies very nicely. Somehow. Again, the treble balances very well and doesn’t seek to overtake any other part of the mix. It simply works in a smoother bite with enough slight brilliance, and I think the result is great. The treble is transient-snappy but does so with this fullness, which flattens the perception though make no mistake, the S15 can take on the quickest tracks with relative ease. Listening to Billy Strings “Secrets” is a good example. The S15 easily replays Billy’s breakneck speed of his guitar and banjo and does so effortlessly. Every note is accounted for. The cadence is on point, the timbre sounds awesome, and I don’t hear any blending of sounds at all. “Bishop School” by Yusef Lateef is another track I use quite a lot as there is a lot of treble activity within it. I really enjoy how well the S15 is able to create space and delineate each instrument in this lusher environment. Granted there are other sets in the price range which can also do a great job on this track with more bite and tactical ability. Basically, it isn’t a miracle set and it doesn’t have the most brilliant sound up top. Still, I am impressed when I look at the entire scope of the S15 sound.
Extension
Extension is also pretty nice on the Letshuoer S15 as we have a reasonable amount of info obtained past 10k. I wouldn’t call the S15 the most extended, but it plays very well against the overall mix. For instance, the secondary harmonics of a cymbal strike doesn’t have a splashy sustain and doesn’t come across digital, or like a mishmash of treble sheen. I don’t find them to be attenuated either. Warmer in body and natural in note portrayal. I find extension nice. Not the best, but nice. It isn’t a detriment, let’s put it that way.
Downsides to the Treble Region
What are the problems with the treble? Obviously treble heads will want an even more naturally weighted and haptically vibrant treble that’s even airier. They’d probably be looking for better fine micro-nuance control, and easier to distinguish details. For the price that is. Beyond that, I would certainly say that warm and dark fans would likely not completely appreciate the amount of shimmer and sparkle up top. That all said, I think the treble is very nice. I don’t find the treble to be sibilant at all, it sparkles yet doesn’t pierce, it isn’t shouty or harsh and the note structure and body is well done in my opinion. Also, I will repeat what I said a moment ago, the treble really does fit the overall sound in a very coherent and nice way.
Technicalities
Soundstage
This one surprised me and I’m not sure why. I suppose I was awaiting the dreaded flat plain of sound that I always hear on planar magnetic sets. Of course, I’ve had quite a few where they had some depth and 3d qualities so… I don’t know why I worried. The stage size of the S15 is good for what it is. I hear a pretty wide stage with decent height (maybe average) and I hear nice depth to the sound. There is a 3D element to my music which adds a somewhat holographic sound field within my mindscape, in a way that sounds realistic. Some tracks it does feel like I’m in the room with the band. I wouldn’t call the stage some massive expanse of sound but I do find it above average in size. Overall the stage is a plus in my eyes. Let’s put it this way, there is most certainly nothing which seems cramped or congested … At all. There’s air and room to breathe folks.
Separation / Imaging
Separation of elements within an imaginary stage have no issue sounding distinct and delineated to the extent that a track will allow. I think this is an area where the Letshuoer S15 excels which is usually a hallmark trait of planar magnetic earphones. Some do it better than others of course. The faster transient attack/decay, the clean notes and nice definition (albeit smooth), the space inside the stage to operate and the capability of the drivers all goes into how well the S15 is able to create space and separation. Imaging is another strong suit. So long as you aren’t listening to a bass heavy track. In those songs I did notice some blending happening. We have fantastic depth for layering of sounds which helps tremendously in how well I am able to place an instrument. Left to right is spot on as well. The S15 is good y’all.
Detail Retrieval
The Letshuoer S15 is a very capable iem friends and I think that detail retrieval is another area that the S15 will not dissatisfy those who enjoy a richer sound. Again, the sound is open enough, snappy enough, clean enough, and balanced just enough to afford the listener with some of the finer nuances within most tracks. Possibly on bass heavier songs with mid-bass boom overtaking the rest of the mix, that is a moment that you obviously won’t hear every last fine detail. Of course, nobody is listening for details on a bass heavy track, let’s just be real. However, in songs that most folks generally enjoy picking apart the subtleties in their music, I think you’ll be happy with the S15. Live tracks are phenomenal, and I do enjoy listening for finer details in the face of a warmer and more solid delivery.
Details cont…
Now, is the S15 a detail monster? Um… No. No, I don’t think the main tuning strategy was to assure that the S15 would be a detail king. This set was tuned well with a nice mix of technical and musical and I’d say that Letshuoer absolutely nailed it. To me it’s much more-so on the musical and emotional side of the aisle. There are plenty of actual detail banger iems out there in the Audioverse and especially within the $300 to $400 price point. There are sets that specialize in this attribute and most of the time those sets will not carry this sense of musicality and macro-dynamic fullness. They are usually less musical, more analytical and drier sounding with an even better balance across the mix. I still maintain that the detail retrieval of the Letshuoer S15 is certainly a “Pro”, especially in the face of this tuning effort.
Comparisons
Note: Due to the length of this review, I will keep all comparisons very general and more concise than usual. I will still do my best to help the reader understand what I believe the differences are so to help with understanding the set I’m reviewing. None of my comparisons are a duel to the death or a battle to find out which is better. That is pointless to me, and I don’t think it helps you to make a good decision. However, verbiage within the comparison may just make it easy to spot the better set.
Letshuoer S12 Pro ($159)
The Letshuoer S12 Pro (S12 Pro Review) is one of those sets that quite literally did almost everything right. For me anyways. The S12P (as I’ll call it) is a true banger of a set that was generally praised almost across the board. Truly a fantastic set which is still in the mouth of hobbyists. As it should be. The S12P also has a 14.8 mm planar magnetic driver and comes very well accessorized in a way that is fitting of its price. Truly a beauty of a set that is still one of the most gorgeous in its price point.
Differences
For starters, both sets are built differently. I have a sneaky suspicion that many folks would consider the S12P the better built set. The S12P’s built with an all-alloy build while the “HeyGears” resin build of the newer S15 is not quite as solid. I don’t necessarily think that though. The HeyGears build quality is phenomenal and won’t corrode and you won’t get scratches or scuff marks either. But still, if “durability” is what we deem the defining characteristic in “build quality” then, I’m sure many would consider the S12 Pro the better built set. I would also venture to say that most folks would crown the S12 Pro the better-looking set. I’m also not as convinced on that, but again, I’m sure many folks will see it that way. I actually like them both quite a lot. The S15 is a bit larger but I find them more comfortable as the material is just easier on the ears. Accessories are obviously much better in the S15 as well. Of course, the most important difference is that the newer S15 is roughly $180 more expensive.
Sound Differences
I find the new S15 is a bit warmer whereas the S12P comes across slightly more vibrant up top. I find the S12P to be more V-shaped then the S15 as the S15 has a slightly better balance over the mix. Between the two I find the S15 has better note definition and better control over the mix. The S15 has much more of a thick and rich timbre that is better textured to the S12P’s leaner sound. Details emerge well on but the S12P does illuminate the minutiae a hair easier. Imaging is better on the S15, and the stage size is a bit larger too with better depth of field on the S15. The S15 simply has (in my opinion) the more engaging sound with thicker note weight across the board.
Bass Region
The S12P and the S15 both have a healthy bass presence but the S15 simply has more control over the region. There’s a more round and warm depth with better texture. Not taking anything away from the S12P. The S15 has an easier time keeping up with quicker bass tracks and has a more solid density down low. I find the S15 to have a more robust and warm authority on attack whereas the S12P comes across thinner and less dynamic in comparison. That all said, the S12P has flatter slam and flatter boom with its increased quantity compared to the S15. You can hear pretty easily that the S12P has more sub-bass emphasis, but even with the emphasis the S15 has better tactile and palpable feel to the drone down low. The S12P has a more vibrant ADSR delivery with a flatter perceived presence. The S15 is simply fuller and more 3D in its attack presence. The S15 flat out has the more sophisticated and developed bass.
Midrange
The S15 has a more forward midrange but also a more robust note weight while coming across smoother to my ears as well. Fans of a drier and leaner and more lustrous presentation may enjoy the S12P a bit more but for everyone else the S15 is absolutely engrossing in this area. The S15 does vocals with a silkier and inviting tonality and timbre and with a more 3D note delivery. Females aren’t as vibrant on the S15, but they are more luscious and charming to this guy. The S12P doesn’t have the body and 3D rendering and layering of the S15. The S12P has a brighter sound that adds that planar grain to the attack edge which the S15 does not have.
Treble
I find both of these sets do the treble very well in their own way. I wouldn’t be surprised to find many folks digging the S12P’s treble a bit more as there is more clarity & brilliance up top. Again, the S15 has more note body and fullness with just enough bite and haptic recognition. The S15 has a lusher body and a more mellifluous sound altogether. Both sets have a decently extended treble but the S12P does define the finer details a pinch better. Of course, that’s at the expense of rich musicality.
My thoughts
Guys and gals, what can I say? This may be an easy decision. The defining factor in all of this will affect almost everyone differently. That is… $180 more. That $180 speaks volumes. Now, I do feel that these two have enough tonal differences to warrant a “preference battle”, but in the end it’ll all come down to what you can afford. If you can plop the extra dough down on the S15 then it would be irresponsible for me not to tell you that “Yes, the S15 is the better iem”. In fact, without question the S15 is the better set in my mind. However, that’s just me. Just because it costs more doesn’t mean it’s better for everyone. If this was a preference battle for you and your preferences aligned closer to the S12P than… Easy decision. The one thing that is true about both however is that both sets are very good options where they are priced.
Hidizs MP145 (Now: $149 MSRP: $199)
What a great set this is friends. I was absolutely taken aback by the Hidizs MP145 (MP145 Review) and how well it replayed my music for the price. This set is a stunning peice of art that is absolutely built like a tank. What Hidizs did with this set is nothing short of impressive. The MP145 has a 14.5 mm planar magnetic driver and a hulkingly large frame and chassis. Truly one of my favorite iems of 2023 folks. But does it do enough to warrant purchasing the S15 instead? Or does it make sense to upgrade to the S15?
Differences
For one, the MP145 is built to a champion level and seems to be built more durable. I don’t know if it’s as structurally sound as the S15, but it is built very well. Made with an all-alloy build and enormous in the ear, the MP145 is truly a uniquely designed iem and I guarantee you won’t purchase anything else quite like it. I like both designs and the aesthetic appeal of both iems but it’s hard to say the S15 looks better. Both sets are accessorized very well, but I’d give the nod to the S15 as that cable is great and it has a carrying case. Without question the S15 is the more comfortable set of the two as the MP145 is just very large and sometimes the cable slides off the ear. Though weight distribution is great. Of we are going by MSRP than the Letshuoer S15 is about $130 more in price, so obviously that is something to consider.
Sound Differences
I find both sets offer a warmer delivery but the MP145 is a shade brighter. I find the timbre of the S15 has less of that planar timbre and a bit better note density. Both sets have a near 3D sound field but the S15 does give a rounder presentation, a more weighted presentation and a more holographic replay. The S15 has a more expressive macro-dynamic fullness with more dimension to the sound. The S15 is also a bit smoother in my opinion. Detail retrieval is actually a bit better on the MP145 but they both fare well there. I find imaging and placement of elements within a stage easier to spot on the S15. The soundstage is a bit more widespread on the MP145, but depth of field is better and more 3D on the S15.
Bass Region
I find both sets have a nicely tuned low-end. Both sets can BANG friends! However, as far as actual quantity is concerned the S15 has a bit more with a more robust sound but both iems carry nice transient swiftness. The S15 has more of a solid note definition as the MP145 is a bit more pillowy at the note edge on attack. The MP145 sounds flatter in its note delivery to me with a drier tone, more paper to a degree. The S15 is more dense, secure, round in its presence and bolder in authority. They are simply different animals. Both are really great in my opinion, but both will appeal to a different audience.
Midrange
The S15 has the milkier, smoother and thicker sound in this region while being more forward in the mix for both males and female vocalists. I love the MP145’s vocal delivery and really do prop it up at the price it is at but the S15 is simply more enthralling, more engaging, lusher, more 3D, and simply comes across a bit truer to life. Both are fantastic but the S15 is special here folks. The S15 is somehow warmer but also more sprightly, more lively, more dynamic. Details emerge good on both.
Treble Region
The highs on the MP145 come across brighter with slightly better extension I to the highest of highs. The S15 has better definition in this region with better control. Better micro-dynamic agility and adds some extra bite and contour that the MP145 only slightly lacks in comparison.
My thoughts
Another great set that is far cheaper than the Letshuoer S15. Perhaps these are horrible comparisons for this review. I figured anyone wanting a planar set may just want to read about other planars iems in the market. Maybe that wasn’t the best decision? There are very few planar sets in the same price point, and I can only compare what I have. Still, we find ourselves in the same predicament as the last comparison. The S15 is a lot more money. Yes, it is a better sounding set (to me) but is it that much better? Well, people will pay for incremental changes folks. That’s just a hard reality. This is a personal decision for all of you who are reading if these two are in front of you. Both are phenomenal at their price, and both make this reviewer very happy.
Raptgo Hook-X ($239)
The next comparison is yet another planar magnetic earphone, the Raptgo Hook-X (Hook-X Review). The Hook-X is flat out one of the best sounding planars in the market. At least that my ears have heard. I have held this set on sort-of a “planar pedestal” to which my bar, or my personal standard would be set for this specific driver type. The Hook-X does have one more thing up its sleeve. Not only is it equipped with a 14.2 mm planar magnetic driver, but it’s also outfitted with an 18-layer double-sided Piezoelectric (PZT) driver. Truly this is a set which came out of nowhere and rightfully made huge waves throughout the hobby. Surely the Hook-X has been able to stay relevant as well as remain one of the best and most complete planar sets out there. Now, whether it stacks up to the Letshuoer S15 is another thing altogether.
Differences
Beginning with the build of each set; the Hook-X actually has an alloy shell and an open back plastic faceplate. Of course, we know the S15’s build by now. I think this is pretty much a draw in my mind. Both sets evoke feelings of durability and longevity, and each has a structurally sound chassis. As far as the look, again, I love these both. I couldn’t choose. Both look dope. Now, the Hook-X is a bit larger with a deeper and slightly wider shell, but I would say that the Hook-X does fit me a little better, though neither set is a bad fit. As far as accessories, the S15 is the better accessorized set of the two, but again, both are great unboxing experiences. I would say that the S15’s cable is better, more premium but both are great modular cables.
Sound Differences
Between the two the Letshuoer S15 has the slightly warmer sound yet never really strays from that warm/neutral sound. The Hook-X has some bright spots likely brought on by the PZT driver which handles the high-highs. I find the S15 has a smoother delivery with better clarity and control. Please understand that this is very minimal. I just find the S15 has a bit better control over the mix with a more contoured playback that defines notes a bit better. Not only defines them but seems to handle micro-dynamics or transients a bit better. The notes are more round and complete to me. Both sets have a more expressive macro-dynamic sound but the S15 sounds fuller and more buoyant. Both sets perform detail retrieval very well. Possibly (this is certainly debatable) the Hook-X draws out the finer stuff a bit better in the treble region while the S15 sounds more resolute in the midrange. Imaging is great on both sets, but the soundstage has more depth on the S15. Not that the Hook-X lacks but the sound field is more out in front and wide, it’s big but sprawled out in front. The S15 is all around.
Bass Region
The bass on both sets is pretty similar in quantity except I notice that the Hook-X has some additional resonances at times while the S15 keeps tighter reins on its bass region. Both sets are very dynamic in this region, and both can entertain faster bass tracks with no problems. Truly both sound great down low with the type of bass that will be what a track asks it to be. Maybe the S15’s bass sounds a hint more forward as the Hook-X has some extra treble emphasis to sort of counter its low-end to a degree. After listening to about 10 bass tracks, I feel the S15 has a slightly more polished bass. Again, I am very happy with both as the differences are marginal at best.
Midrange
Beginning with male vocalists I find the Letshuoer S15 carries thicker note weight and once again has a fuller and more natural sound. I hear the Hook-X has a more forward sound which can be a bit too lustery and grainy in some situations. Especially with males that perform at a higher pitch. Lower register males have a stouter sound on the S15 with a rounder and more complete sound. Females pretty much follow suit. In the Hook-X they sound generally brighter, drier, shimmery, but really do sound nice for what it is. The S15 on the other hand has some semblance of shimmer but it’s kept in check while holding onto that note body and note roundness. The S15 has such a naturally holographic and well-tuned sound which separates all sounds and has smoother but more contoured vocals and instruments. The Hook-X simply comes across brighter yet has less dynamic energy. It also is subject to minor sibilance whereas on the S15 that is nowhere to be found.
Treble Region
The treble of the Hook-X sounds brighter, more brilliant, maybe the emphasis adds some details that are easier to pick up on then the Hook-X, but I echo this entire review; the S15 has better body! This is huge! The musicality aspect is so easily discernible friends. The Hook-X has a bit more treble bite as well and does have better treble extension up top but the S15 sounds less splashy with a more robust vibrance. Without question, clarity is better on the Hook-X in this region as it simply is boosted enough to cater to it. It’s drier and separated better in this region. Attack bite on the Hook-X is sharper, albeit thinner and brighter. I certainly enjoy the S15 more in this area as it is much less offensive. The Hook-X treble rise does affect the midrange snappiness and attack edge for percussion and detail retrieval is better on the Hook-X up top. However, I adore the sound of the S15, and I’d take it’s lush, smooth, and bodied sound any day.
My thoughts
I realize this comparison doesn’t exactly sound like a ringing endorsement of the Raptgo Hook-X. However, it is a great set, truly. It has a slight bit more brilliant treble energy and can be a hair peakier, but it holds its own against any planar. Still, the S15 is a different beast folks. It is simply better in my opinion as it has the more controlled, and holographic replay with more of a musically toned sound. It also has better and more full note weight, but resolution may go to the Hook-X. Of course, there is a substantial price difference once again to be mindful of. Both are truly great sets for most any collection. Unless of course neither of them sounds like your preference.
Is it worth the asking price
This is the big question from so many. They want to know, is the S15 really worth such a huge price jump? I read quite a bit of outrage over the pricing of this set. Is the S15 even worth this huge price jump from other planar iems? Let me start by saying, maybe. Like I said before, it all comes down to your “own” wallet & your “own” preferences. The truth is, you’re asking a question that I or any other reviewer can’t answer. How am I to know if the S15 will be worth the $200 more to “you” and for “you” than let’s say… The S12? It’s a ridiculous thing to ask really. I read on some forums, in Facebook etc. many comments revolving around “Is the S15 really $200 better?” What!?
Listen folks, I’m not in the game of telling you what’s the worth of anything… for you. You decide. There is no quantifiable way on planet earth to distinguish if anything is worthy of its price better than how it makes you personally feel. I’m not doing that for you. Letshuoer can ask whatever they want folks. They could’ve asked any amount for this set but they felt $330 was the amount that was reasonable for all the hard work they put into it. I get it though. It’s more than you are used to seeing. Well friends, until you put them (S15) in your ears, you won’t know. Until you sit and digest this set for multiple hours, you won’t know. Plain and simple. The best I can do is answer this question “for me”.
Is it worth it to me?
Now, do I think the S15 is that much “better” than the other planars I’ve heard? 100% yes. Folks, the difference is substantial, and I do think it is worth the price. But please hear me… I’m not you. I’ve never heard a planar like this actually, and to be honest, it’s one of my favorites. I’m so used to a dryer, thinner, snappier and more artificial sound that when I heard this vocal friendly, 3D & lusher S15 sound… I couldn’t put them down. Truly they are the best planar magnetic earphone I’ve ever heard. Of course they also jive with what I personally prefer. Also, I wasn’t as impressed by the S12 or a handful of others for that matter. They all sound somewhat the same. Impressive sure, but simply different variations of similar tunings. This is different.
The Why
Why? Where to start? Let’s begin with the packaging. The unboxing experience is absolutely at the $330 level in my opinion. Of course, not many people really care about this aspect but for those who do, just know it is a nice experience. The S15 comes with a great modular cable, actual good tips which makes sense for the set I’m reviewing. Which is a rarity. The threaded case isn’t bad, and you even get a poster friends! Next, the build is one of those dope HeyGears types with the softer feeling resin with the matte appearance. I loved it on the DZ4, and I love it on this set. The design language is what I would call sleek and modern with a minimalist approach. Very nice. However, it’s always about the sound and always will be. Forever the sound will be at least 80-90% of the true worth of an earphone.
Why cont…
The sound is a beautiful rendition of a lush sound yet has a technically sufficient fine tuning and a boldly dynamic foundation which has a 3D holographic and totally immersive quality to it. Friends, it’s special. Now, there are sets out there with different driver configurations that do well against it in this price point. However, this one is very special. You have the transient quick sound which is agile enough to duck and dive around quick and complicated passages of music, but you also have that pervasive smoothness that isn’t simply a one noted affair. Instead that rich delivery has a personality; there’s roundness and a three dimensional, stereoscopic and robust sculpting of each and every note and there’s fantastic cohesion in the mix. Are there subjective issues? You betcha! Not everyone will jive with the Letshuoer S15 like I have. So many folks are in a different place in their audio journey and so many will not appreciate all that I’ve tried to describe. To me the Letshuoer S15 is not just a great planar earphone… no sir. To me the Letshuoer S15 is simply a great earphone in general. Yes, it is worth the $330 Letshuoer is asking for.
Conclusion
To conclude my full written review of the Letshuoer S15 I have to thank the great people of Letshuoer for providing this set for a fair and honest review as well as a feature at Mobileaudiophile.com. I also want to thank you (the reader) for taking the time to actually read my thoughts and I do hope that it has helped you. You are why I do these reviews friends. I’ve been a hobbyist longer than I’ve been a reviewer and I know what it’s like to constantly search and seek out opinions. So, I hope I was in depth enough and I hope I’ve answered any questions you may have.
Different perspectives
One thing I implore out of all of you is to seek out other perspectives about the Letshuoer S15. Friends, this set is great but don’t just take it from me. It may not be great at all to the next man. Take in other thoughts and opinions so that you can get a better idea of what the S15 sounds like and if it’ll fit your own personal preference. It’ll only help. We simply aren’t all the same and each of us has been down a different journey in audio, we’ve got different gear, different libraries of music, different hearing abilities and we don’t all have the same likes and dislikes. So please, don’t simply stop at me, check out some of the other reviewers out there who pour their time into their reviews. Please take good care, stay as safe as you are able and always… God Bless!
