Letshuoer Cadenza 12 (2024) Review

Intro 

Hello, this review and feature covers a flagship level IEM from the audio brand Letshuoer named the Letshuoer Cadenza 12 ($2,299). The Cadenza 12 unit that I have is actually the updated version which some refer to as the Cadenza 12 2024. The Cadenza 12 is actually a 12-driver hybrid iem which consists of one dynamic driver and eleven balanced armature drivers (more on that later). Friends, this set is absolutely loaded with some of the best drivers, and it is truly one of the most cohesive sounding big hybrid sets on the market, regardless of the price tag. Of course, there will be much more on that later. For now, I simply want to convey my thanks to Letshuoer. 

Quality Time… 

Folks, I’ve had the Cadenza 12 with me for about two months now. I’ve spent every single day with the Cadenza 12 in my personal rotation, with me, every day. I chose to make this a long-term review. One that I could make a long-term assessment of. If I could conduct every review this way, I would. I think it has truly impacted how I look at this set. I have such an intimate understanding of the Cadenza 12 that comes from actual time spent over a lengthy period. Much has to do with the price tag. Because +$2k is not cheap, and consumers want to know what the expectation can be after a longer period of time. I came to this decision because some of the other kilo-buck iems that I’ve reviewed were always “typically” 14 days of listening and then the review. That’s not long enough. I believe wholeheartedly that every review should be at least three weeks, at least! So, I credit Letshuoer for giving me no window or time frame for when this review was published. Truly a testament to the brand. A brand I’ve come to respect quite a lot. At any rate, I’ve easily logged well over 150 hours with this set in my ears. That has to be on the low side. So, I can certainly say that I will give my best long-range interpretation of the sound. 

Letshuoer 

What can I say about Letshuoer that I already haven’t said in multiple reviews now. They are simply one of the premier Chinese brands who consistently put out quality with every product. Well thought out, well envisioned, and well-constructed products on a constant basis no matter the price point. I am so impressed by this brand. Folks, from the Letshuoer Cadenza 4, to their amazing run with the S12 series; the brand Letshuoer has become a staple of the audio faithful. Friends, Letshuoer has been a highly touted audio brand for years now, yet they’ve actually been in business since 2016. This is a fact that I’ve known for quite some time, but that doesn’t make it any less impressive. 10 years is no small feat in this day and age. To stay relevant for such a prolonged period of time suggests great price to performance, quality products, and an ability to create widely renowned tunings which sit atop the community consciousness. Basically… you have to be good. 

Letshuoer cont… 

The truth is, every Letshuoer product which hits the market has at least some level of community interest, which is saying a lot considering we have vast amounts of new audio products which hit the market every week. Letshuoer has timely releases, they never release a product too early, and they’re the furthest thing from a brand who throws spaghetti at a wall to see what sticks. They’re releases matter in such a way that it is obvious that Letshuoer has their finger on the pulse of the community. By-and-large the feedback has been positive. I for one have been fortunate enough to feature many of their products as well as own even more and I’ve been nothing but pleased with Letshuoer. 

Feel free to check out a couple handfuls of my Letshuoer reviews over the past couple years:

Letshuoer S12 Pro, Letshuoer DZ4, Letshuoer S15, Letshuoer Cadenza 4, Letshuoer S08, Letshuoer S12 2024, Letshuoer Mystic 8, Letshuoer DX1, Letshuoer S12 Ultra 

Friends, it’s no secret that for the cost of over $2k, the Letshuoer Cadenza 12 2024 needs to be highly qualified in its target tuning. At these prices we typically see iems with more particular tunings. The point is that the earphones meet those targets set out by the brand. The Cadenza 12 is clearly a flagship set with flagship intentions folks. Also, I’m definitely ready to get this one going. So, without further ado, the flagship Letshuoer iem… Letshuoer Cadenza 12… 

Non-Affiliated Purchasing Links:

–Letshuoer

–Aliexpress

–Linsoul

–Audio46

Cadenza 12 Pros

-Impeccable Titanium build

-I cannot get over how much I love the simple, beautiful design

-Comfort is top shelf for this guy

-Unboxing is absolutely fitting for a $2299 iem

-Extremely smooth cadence, yet top tier resolve

-Wonderfully mature sound 

-Dead neutral, musically engaging sound without sounding too dry & clinical

-Wonderful neutral-natural timbre which comes across realistic 

-Speedy sublevel attack, tight decay, nice rumble

-Semi-forward and effortlessly transparent mids, great vocals, vibrant

-Extended, sparkly, airy, and super detailed treble. Some of the best 

-Detail Retrieval is flagship level

-Multi-layered sound field presentation 

-Imaging is distinct, precise, and spans the entire sound field

-Soundstage depth is fantastic, awesome stage height, just-above-average width

-Holographic and immersive feel to every track

-Smooth cadence yet crisp at the edges, nothing abrasive to my ears

-Top shelf technical replay, across the board 

Cadenza 12 Cons

-Cable can be problematic (subtle issues) 

-Could use some mid-bass warmth

-Lower midrange is a hair thin in note body, not as rich as some may enjoy

-Some folks may have issues with the 10k peak (I don’t at all) 

-Not the most dynamic or enthused presentation 

-Some warm, dark lovers may have issues with the treble region 

Gear used for testing 

–Shanling UP6

–Shanling UA6 

–Ifi Go Blu 

–Hidizs S9 Pro Plus  

–Shanling UA7

–Shanling H0

–Hidizs AP80 Pro Max 

–Fiio JM21 

–Hiby R3 Pro II

–Hiby R6 Pro II 2025 

–Shanling M1 Plus

–IBasso DX240 with Amp8 MK2 

–Shanling M6 Ultra 

–Fiio Q15

-Many more sources used

Packaging / Accessories 

Unboxing 

Flagship +$2k iems should come with a flagship level unboxing experience. If someone is going to spend that amount of money on a set of iems, it better be unbelievable. That goes for all iems at this cost. Thankfully Letshuoer does not disappoint. Granted, there’s only so much these brands can do to provide an unbelievable unboxing. However, I find that the presentation that Letshuoer put together is one of the best that I’ve come across. The Letshuoer Cadenza 12 arrived at my home in a pretty large silver (almost mirror finish) cardboard box. The box itself is indicative of any flagship level packaging. Basically, it is big (9” x 9” x 3”). However, it’s big, but also very simple in design, which is all class. No doubt it is a Creme de la Creme style introduction to the Cadenza 12 2024. Now, the silver box actually contains the real inner box. That is a beautiful, all black, faux leather cladded hard cardboard box which honestly feels hard enough to be wooden. Quite surprising it isn’t. Also, the cladding covering the box is about as close to leather as you can get. It is so very nice. The box opens from the top with a magnetic flap which holds the box closed. Real quick, Letshuoer actually provides some fabric covered wooden partitions to use as separators for holding your audio gear. Very cool. 

What’s inside the box? 

So, the moment you open the box you are greeted with a beautiful display of the earphones sitting in foam cutouts near the bottom and a thin box above that with “Letshuoer” in gloss black lettering. The lid of the box is covered in a very soft cushioned internal lining. Very bougie. So, take out the thin box and inside you’ll notice many cards which explain the Cadenza 12 as well as Letshuoer’s pursuit in creating this set. It is so cool. Among various other reading materials and a soft micro-fiber cloth. Just under the thin box is the carrying case as well as a cartoon like big metal plaque featuring Letshuoer’s mascot, a dog, which is playing the violin sitting on what looks like a TV. It’s simply awesome. On the back is a little stand as well. Now, on the lower half of the box if you remove the earphone layer, you’ll see the partitions that I was talking about. Under the partitions you’ll see the awesome number of eartips displayed nicely in foam cut-outs. Inside the package there is also the cable and the cable adapters (3.5 & 4.4 terminations). Listen folks, this set is very well adorned in the beauty of simplicity. Once again, it’s all class. Whoever purchases this set will have a great time going through the unboxing process. 

Eartips

Within the packaging Letshuoer provides a grand total of nine pairs of eartips over three different styles of eartips. I gotta say that all of the provided eartips are great and I’m such a stickler about eartips. I don’t at all enjoy flimsy and weak eartips. They have to be rigid, and firm. Thankfully all three pairs are just that, rigid and firm. So, the first set of three (S, M, L) are Letshuoer’s “Vocal” eartips. These tips have a gray silicone flange and bright green stem, semi-wide bore, slightly longer for a deeper fit. The flange is very similar to KBear 07 tips in the way it is fairly thick, and it won’t just buckle with a little pressure. Certainly not flimsy. Next, Letshuoer added in three pairs (S, M, L) of their “Bass” eartips. The bass tips are an orange silicone tip covering orange low-rise foam. Very isolating and extremely firm. These tips seal and mold to your ears very well. The bass eartips also have a semi-wide bore. Lastly, Letshuoer provided three pairs (S, M, L) of their “Balanced” eartips. Now, it’s the balanced eartips that I like the best. Now, these are white silicone eartips with a very firm flange along with a thicker, more rigid black stem. Once again, these are also semi-wide bore as well. Also, very similar to KBear 07 eartips. You’ll see these tips in many Letshuoer sets. I actually have a mountain of them by now. Still, I like these the best. Granted, all three eartips fit me well and seal well. Honestly, they are all good eartips folks. 

Carrying Case 

This brings us to the carrying case. Friends, the carrying case is flat-out dope. It’s a gorgeous gray leather case, about 3” x 3” and it is very nice to look at. I am not one for carrying cases, but I love this one. It has the most satisfying magnetic clasp as it slams shut. Really a nice looking case too. I love the stitching around the sides and really it just looks like it would come with a premium set of earphones. However, there is a slight issue with its size when using the Letshuoer Cadenza 12. What I haven’t explained yet is the cable, which is pretty fat. I actually have a semi difficult time fitting both the earphones and cable. Now… it can be done… but it’s tight. I wish the case was about another ½” bigger all the way around. Having said that, it is a slick looking case and perfectly fits the “class-act” style aesthetic of the Cadenza 12. 

Cable

The cable which comes packaged with the Letshuoer Cadenza 12 is without question a premium cable. Letshuoer did not disappoint when it came to quality materials at all. To be exact, it is a 204 strand 6N monocrystalline copper (6N-PCC) and silver hybrid weaved cable. This cable has flush mount 2-pin connectors as well as very nice stainless-steel fittings. One other aspect that is great is that this cable is a modular design and comes with a 3.5 single ended and 4.4 balanced adapters. I of course primarily use the 4.4 adapter. The cable itself is a two-toned design with the ear hooks down to the y-split being a typical light brown weaved cable. However, from the y-split down to the terminations this cable is extremely stiff with a very thick and stiff black sheath which covers the cable. Honestly, folks, this is the stiffest cable I’ve ever felt in my life. It is not very easy to work with at all. Now, the cable sounds amazing and looks super dope. So, it is truly an awesome cable that I don’t think I could ever break, or ruin from usage. There’s no way. This thing feels like I could hang my house from it. No joke. Okay, I am certainly joking, but I am definitely serious that the cable is extremely stiffened due to the very tight wrap that the fabric has. This for me is an issue. I say that ebcasue wrapping this cable up for storage is almost laughable. There’s no winding the cable up to safely store away. Folks, this cable springs apart with some force. I have to stack other sets or other “things” on top of it to hold it all together. Of course, I deal with it because it’s such a cool looking and well sounding cable. So, not a huge complaint, but you should know these things. 

Build / Aesthetic / Internals / Fit 

Build Quality 

Oh my, friends, the Letshuoer Cadenza 12 is built like an absolute tank. A relatively light tank that is. The Cadenza 12 is built entirely out of titanium alloy. Friends, I don’t know if you know anything about titanium, but it has a very high strength-to-weight ratio, great durability, and typically low resonance. In fact, the very reasons why it is so unbelievably good for earphones is the same reason that makes Titanium difficult to form and shape into a small and complex design like the Cadenza 12’s shells and require specialized skill to accomplish. So many issues can arise when working with Titanium. I know because I’ve worked with titanium in my past quite a bit. Titanium raises many issues. However, it is also one of the best materials on planet earth to use. Letshuoer used 5-axis CNC machining to shape the Cadenza 12 shells followed by aggressive polishing to give it that mirror-like finish. I’ve noticed that the shells are surprisingly lightweight too. Not in comparison to resin shells, but certainly lighter than other alloys not named aluminum. Letshuoer added only one vent near the 2-pin connectors. Now, the nozzles are of moderate length and have a width of 6.1 mm, which is about standard size. Honestly folks, the Cadenza 12 is one of the best built iems on the market. I mean, you can only get so good. However, I am very impressed at how ergonomic and how beautifully designed this set is. 

Aesthetic 

Now, the aesthetic may be another story for some of you. Not everyone wants a set that has almost no decorative aspects to it. However, I happen to think the mirror polished Titanium shells are like jewels as it is. I adore this design. The same way I adored the TRI I3 Pro’s stunning simplistic, and completely beautiful mirror polished design is much the same way that I dig the Cadenza 12’s beautiful look and aesthetic. I think it’s genius. Letshuoer knew that they didn’t need to adorn the Cadenza 12 in ornate fashion. They knew that they didn’t need to try so hard. So many of these kilo-buck iem makers go to some of the craziest extent trying to blow the mind of the consumer. Honestly, much of the time those designs are gaudy, and almost too much. The Cadenza 12 is quite literally the definition of “class”. I applaud Letshuoer for having loads of just that… Class. 

Internals

Once again, the Letshuoer Cadenza 12 uses a vast number of drivers which are expertly and delicately stuffed into its shells. In fact, there are actually 12 drivers in total per side in a hybrid architecture, which is very ambitious of Letshuoer. Taking care of the lows is a 10 mm LSS (liquid silicone surround) kevlar dome dynamic driver. The midrange is taken care of by a total of seven Sonion balanced armature drivers, some are BA arrays. Letshuoer states that they used Sonion composite midrange woofer arrays (stacked BA drivers) as well as Sonion composite midrange tweeter arrays. Next, the treble is covered by a total of four Knowles balanced armature drivers. Truly a huge number of drivers to try to cohesively tune in a homogenized manner. Letshuoer was able to do this (in part) from the usage of a 6-way electronic crossover which helps to assign certain regions with certain drivers. Also aiding that sound separation is the use of five 3D printed acoustic tubes. Lastly, Letshuoer smartly used titanium, not just for its beautiful design, but for its acoustic properties too. Titanium is known for its ability to reduce internal resonances and vibrations, and it was definitely used in this manner with the Cadenza 12. 

Fit / Comfort

I can only speak for myself when it comes to comfort and fit, but I can tell you that the Letshuoer Cadenza 12 seems to be about as good a fit as any set. I can tell you that I don’t have any fit issues. It isn’t oddly shaped, and it doesn’t have any jagged edges. The Cadenza 12 is actually quite comfortable for me. Once I found some tips that I enjoyed, which was just about every set of tips that Letshuoer provides with the Cadenza 12, I was good to go. I honestly don’t feel that many folks will have any issues. The Cadenza 12 isn’t too big (believe it or not), even with its large number of drivers, and it isn’t too heavy either. That too is odd because it is an all alloy iem. The weight is distributed rather well I’d say. Altogether, the fit is good for me. 

Drivability / Pairings 

Sensitivity / Scaling

The Letshuoer Cadenza 12 is rated with an impedance of right around 16 ohms and a sensitivity of about 110 db’s. Basically, the Cadenza 12 is a very sensitive iem. So, I can tell you that without the shadow of a doubt the Letshuoer Cadenza 12 can fairly easily be driven off of just about any source device without much of an issue. Just for testing purposes I always check every set with the weakest sources that I have. Those are an older Android phone with a 3.5 se jack, my iPad, three different weak 3.5 single ended Conexant dongle dacs etc. You get the point. I found that the Cadenza 12 had zero issues getting both loud enough and dynamic enough. However, there is no reason to run this set off of anything that doesn’t have some good and clean power under the hood. No doubt about it the Cadenza 12 has some nice scaling abilities. I find that a solid dongle dac with reasonably good output power will do the trick. The Cadenza 12 really doesn’t need much, but a good and quality source along with some decent power will certainly bring out the best in this set. You’ll notice improved dynamics, expanded soundstage, and enhanced note separation. As honest as I can be, the Cadenza 12 sounds great with many sources so long as you have enough power to bring out the dynamic expression within the drivers. 

Source Pairing 

As far as tonal Pairings with source devices, the Cadenza 12 matches best (in my opinion) with sources closer to warm/neutral when speaking in generalities. However, I think you will be able to find audio nirvana with anything from neutral to warm. I don’t think the Cadenza 12 is super picky of source so long as it isn’t a brighter leaning source. I think it is far more important that your source has good and clean dynamics and a clean sound in general. The Cadenza 12 is ridiculously resolving and so it’ll pick up any subtle noisiness or less desirable sound coming from any source. Now, I highly doubt that anyone looking to purchase this set already has a high-quality dongle dac, dac/amp, dap, or desktop setup. I don’t think a newbie will all of a sudden decide to drop a cool $2.5k on an iem with no source to play it with but a smartphone. So, I imagine whoever is reading this has something of decent enough quality. Still, it takes all kinds in this hobby, and I try to speak to everyone. So, once again, make sure you have a clean source, preferably between neutral and warm in tonal color. Try to get a source with clean power, good power, and make sure to enjoy every minute of it, then you’ll be set. 

Sound Impressions 

*Note: before I do a deep dive into the sound, I definitely need to speak on a few things. First off, I did burn-in the Cadenza 12 for roughly about three full days. It’s the typical amount I usually give all of my review sets. I do think that burning in helped to relieve some of the metallic upper-mid to lower treble edginess. Not that it was ever really bad, but I could hear the difference. Next, I listen entirely from flac (some mp3) or better files which are stored on my devices. Rarely do I stream my music. I used too many sources to list here. Also, my Android music player of my choice is mainly UAPP (USB Audio Player Pro), Hiby Music Player, and the native music player for my non-Android daps. I used stock tips and stock cable for all of my critical listening. 

What’s it sound like?

After spending so much quality time with the Letshuoer Cadenza 12 I feel that I have a very good grasp on this set. Both its strengths as well as its “subjective” weaknesses. So, to my ears I find the Cadenza 12 to be extremely refined. In fact, to me “refined” is the word that best explains this set. Without question the Cadenza 12 has a high-end mature tuning meant for audiophiles who prioritize balance across the spectrum, musicality, and a high level of technical ability. Furthermore, this set has what I’d call a slightly split personality as the lower regions add warmth, but the upper regions gleam bright, while the tonal color of this set hovers around warm/neutral. However, the sound as a whole comes across very naturally. Really, if it wasn’t for the slightly brighter upper half I would have called the Cadenza 12 one of the most true-organic sounding sets that I’ve heard. Now, Letshuoer knows what they are doing folks. That added upper half sparkle is a much-needed presence boost which adds presence spectrum-wide. Everything sounds wonderfully transparent with instruments which sound realistic, exceptionally clear, but also with a certain clean-lined & lean-lush note body, and it all flows fluidly in a very smooth demeanor. Yet, don’t let that smooth demeanor fool you because the Cadenza 12 is also very precise, with quick stop-and-go dynamics, tight transients across the board, and ample crispness which does very well to help define and contour notes from the sublevel bass to the upper treble. 

Technically Speaking 

As far as the Cadenza 12’s technical abilities, I can tell you right now that this set will have very few which compete with it, at any price range. It’s that clarity rich. However, the micro-dynamics are truly at an expert level here. Within the subtle, rapid changes in volume, or volume shifts, the Cadenza 12 is well able to capture the subtle nuances and minute expressive minutiae within a track. It’s actually extremely capable at illuminating the finer details without sounding clinical. How the Cadenza 12 remains such a smooth operator is truly a testament to Letshuoer. I love the cleanly-layered approach which doesn’t neglect the emotionality within my music. In fact, musicality is fantastic in this set. Just not in a traditional way. However, back to the technical stuff, the bottom line is that the Cadenza 12 has very fast drivers which are also very well controlled. Even the most complex passages of music are not a threat to the Cadenza 12. In truth, all complicated tracks are intelligible and clearly distinct, and I don’t hear any grain, fuzz, or veil clouding the mix or blurring lines between notes. It’s all clean! All leading edges to any instrument come across with crisp without any abrasiveness. Add to that, every instrument has its place in the sound field with solid imaging along with a multi-layered experience with this set. The only real drawback to the transparent and clean-lined sound is that poorly recorded tracks… will sound like poorly recorded tracks. Lesser quality music… will sound like lesser quality music. The Cadenza 12 will pick up any minute, nanoscopic, or microscopic impurity and just as well it’ll pick up every last micro detail as well… the Cadenza 12 doesn’t discriminate. 

The Beauty of the Cadenza 12… 

I think the beauty of the Cadenza 12 is in its ability to be both musically gifted and technically gifted without coming across either too rich/warm or too dry/clinical in tonal color and note structure. What you have is a very pristine sound, excellent precision, and a glass-lined surface texture that doesn’t lack emotional engagement. Instead of dry or thinly rendered notes carrying forced brilliance and air, the Cadenza 12 has natural body to notes, and strict fine lines between those notes with better-than-adequate openness providing a very lifelike presentation. The Cadenza 12 has a very tight, very focused, and very rapid transient response between the DD and all of the BA’s stuffed inside of its gorgeous titanium shells. Its dynamics are expressive enough with macro-dynamic swings coming across with gratifying weight so that bass lines, percussions, feel more engaging rather than papery, dry, flat, or purely clinical. It has a boosted sub-bass and boosted treble which adds some excitement and energy, yet the mids stay fairly even and clean. The result is a believable tonality. This beauty has those clarity-rich and clean lines across the spectrum which never sound abrasive but always sound fluid and smooth. To add to that, the texture is wet rather than etched, good note density throughout and sparkles everywhere. Folks, it’s simply some very nice timbre. The beauty of the Cadenza 12’s tuning is that it truly can playback multiple genres very well. Sure, you may be missing some mid-bass weight, but for the most part this set is very well tuned. 

Not for everyone 

Of course, not everyone is going to be a fan, let’s just put that on the table right now. Not everyone is going to want to spend $2.5k on a set with moderate mid-bass slam, weight, and warmth. Like anything the Cadenza 12 is simply not going to appeal to every person. There will be those who consider the treble to be too enthused, too sparkly, and too energetic. However, I feel it’s the warm/musical types, or those who listen mainly to EDM or bass heavy Hip-hop (which is most Hip-hop), or even heavy metal lovers who need that bass weight to be foundational for their listening experience. Having said that, I find this set to be very clean, highly detailed, close to “authentic-to-life” timbre, great with most of my music, while boasting a very well dimensioned sound field and one of the cleanest multi-layered performances that I’ve heard in its price point. Let’s check out each 3rd of the mix… 

Bass Region 

As I said earlier, the bass region of the Cadenza 12 is not overly boosted in an attempt to maximize weight or slam and it isn’t there to be the centerpiece. Though the bass is a substantial reason for the sonic beauty of this flagship set. The Cadenza 12’s bass region is tuned much more for quality, control, and realism. I’d say a moderate emphasis at best, yet that moderate emphasis is enough to balance the spectrum nicely. The bass as a whole comes across very agile, very well defined, and pretty fast with adequate muscle for most low register instruments and voices but not even close to enough weight and muscle for anyone who calls themselves a “basshead” or “bass-boi”. It’s more of a support style bass that never calls attention to itself yet covers this range very well. However, it should be made well aware to anyone seeking to purchase the Cadenza 12 that they should not expect a heavy-handed low-end. Instead, they should expect a bass that is very well defined, refined, and articulate as it meanders through just about any and every bassline with a very nuanced approach for a flagship set. They should expect a robust presence and atmosphere, yet only moderate levels of boom, slam, or juddering rumble. Without question this is a bass region which can and does show up when called upon. Very nice texture for anything from double-bass, synthesized bass, to bass guitar and bass vocalists. Never muddy, never one-noted, and always precise. Obvious separation is created from the 10 mm LSS DD’s ability to stop-and-go on a dime, with transients that influence space between notes, low-end details, and it does so without breaking a sweat or ever sounding too clinical. The bass has a natural tonality, adequate physicality, never veiling the mix, but instead the bass promotes a very clean canvas, preserving clarity for vocals and instrumentation. Folks, it truly is a talented region, even though it may get overlooked. 

Sub-Bass 

The sublevels of the Cadenza 12’s low-end carries the brunt of the emphasis and does so in a convincing enough manner providing a nice rumble anytime a track contains deep content. The beauty of the sub-bass is that its influence is not constant and it doesn’t permanently flavor or color any area of the mix. There’s no low-end swell of bulbous weight and no muddy created from a persistent sublevel dominance. No sir. Letshuoer smartly tuned the sub-bass to only make itself known when a track specifically calls for it. There’s no bloom or boomy resonance smear on this set. The Cadenza 12 carries such an expertly tuned sublevel response which caters to naturality and timbre correctness. Its maturity is infectious when you understand it. Once again, when a track contains some deep and guttural bass, the Cadenza 12 does respond. Tracks like “Mancey” by Andrew Bird carry some rounded and bullish bass guitars and the Cadenza 12 responds rounded and bullish. Every fundamental tone sounds dense, with moderate weight, but very tight attack through sustain and no extra resonance sheen. Basically, the sub-bass is extremely clean friends. I hear this time and time again. I’ll say it again, the sub-bass (and the mid-bass) take on a supportive role and never usurp dominance, yet they play their part with adequate dark vibrance, always clean and articulate over thick and gooey. Nothing soft or pillow-like, and always naturally textured with a lifelike lean-density. 

Mid-Bass 

Once again, the bass region as a whole was tuned primarily to add just enough warmth for timbre realism but dialed back enough for supreme clarity. The mid-bass plays the role really well. Having said that, I understand if the mid-bass slam isn’t quite what some hobbyists would enjoy. Honestly, after listening to this set daily I am of the opinion that the mid-bass is tastefully tuned. Elevated just enough to provide some body, some punch, yet deliberately dialed back to prevent against smearing of any kind down low. I will say that the Cadenza 12’s mid-bass can sound fairly robust when a track calls for it and I have many notes citing this. The mid-bass is highly textured, well detailed, very well resolved, and stays true to the timbral integrity that Letshuoer targeted. Again, a fast attack, nice snap on attack as well and a natural decay helps percussion. In fact, the Cadenza 12’s mid-bass excels with any instrument where texture and decay are paramount, especially for acoustic or natural instruments. Most certainly double-bass is wonderful as I can hear the woodiness of the sound and the string vibration. Or the bow texture on a cello tuned with just enough weight to give a realistic body. Of course, there are many more, but I think you get the point. No, the Cadenza 12’s mid-bass isn’t overly boosted, isn’t saturated, doesn’t color the mix warm, and it won’t provide that lush midrange timbre that many folks enjoy. Still, for what the Cadenza 12 was tuned to be, it truly has nothing to be ashamed of and will have some huge fans. 

Downsides to the Bass Region 

The obvious downside is the subtle lack of weight and authority coming from the bass. Lately we’ve seen so many sets tuned to be more fun, more physical, and warmer. I think the beauty of the Cadenza 12’s bass tuning is that it’ll provide some slam, some hearty rumble, and some physicality without disturbing the clarity or veiling the mix in any way. However, I know far too many people who much more enjoy some beef down low. Shoot, I typically need more emphasis here. No doubt about it, there will certainly be some detractors, like bassheads, or even moderate bass lovers. This’ll be a bass that will resonate with those who can appreciate it for what it is. I’m telling you, the bass is very well tuned, very agile, very clean, and has a very nice way of upholding its responsibilities per whatever track I’m listening to while also sounding layered, detailed, and precise. 

Midrange 

To me the midrange has such a sweet emphasis. So well rendered. The midrange is what I’d call semi-forward and with great presence and vibrance. Everything is linear throughout, balance is awesome. Nothing too forward and nothing recessed either. Vocalists sit just in front of instrumentation coming across very vividly against just about any melody. Just like the bass region, the midrange is also tuned in such a way that isn’t that thick, lush, and traditionally musical style. Folks seeking out a warm and earthy sound will not find that here. The midrange isn’t overly warmed and isn’t going to have that rich and romantic feel to tracks. This is a midrange predicated on cleanliness, separation, realistic tone & timbre, as well as details, details, details. To my ears the midrange is so very engaging, which is odd because I typically wouldn’t relate a tuning such as this with the word engaging. Yet here I am, overjoyed at how neutral-natural the timbre is and how textured every last note can be along with very precise note contours, all the while sounding very smooth in cadence. I’ll tell you what, this is a very honest midrange which will highlight every last micro-detail, all of the vocal layers, and every minute micro-dynamic volume shift with relative ease. Beyond that, friends, the midrange just sounds so melodic! Almost in spite of the leaner presentation. I think it’s the smoothness that draws me in every time I listen. It’s so cool to have an effortlessly smooth and creamy rhythm that’s also so clear and transparent with solid note bite, the clean edge, the crispness, and the snap on attack. 

Lower-Midrange 

If any area of the mix were to be called “subtly recessed” then I suppose it’d be the low-mids, though I hear plenty of etched-out presence and clarity rich notes. I’d probably say that the bass region and upper mids are slightly more forward. Baritone vocalists, rhythm guitars and stuff like piano won’t necessarily sound as rich & enveloping as some may like. Perhaps not as energetic too. Having said that, the low mids will come across with an accurate body whilst also very well separated and precise. Especially in more congested music this will show it’s worth. Still, you won’t hear those chesty and robust male voices quite like a more richly bodied tuning. That doesn’t stop the Cadenza 12 from having well done male vocals though. This is one of those instances where the clarity alone provides the note density. Such a clean edge, space between notes, black background, which helps male voices to sound vivid and clear. Tracks like “Ordinary” by Alex Warren is one example of many where his voice sounds on a pedestal. Not quite forward, or “more forward”, but embossed against the backdrop of the melody behind him. If that makes sense to you. Or Dermot Kennedy in the track “Rome” where his gravelly voice and edgy intonation to every note sounds realistic without any of that edginess sounding embellished when listening with the Cadenza 12. Very clean, very textured, detailed, even, clean-lined, as well as very fluid. So, the moral of the story is that the low-mids may not be the lush, warm, authoritative, and thickly rendered style that some may like. However, I like it just the way it is. 

Upper-Midrange 

The upper midrange is certainly more forward than its low-mid counterpart, and it’s also even more technically inclined. There is this unmistakable immediacy with every lead instrument or female vocal and this tone-down vibrance which sounds focused creating great presence. Definitely you’ll hear even finer details as the luminance within the region really boosts that presence illuminating the subtleties. The upper-mids come across with tight transients, it’s crisp, yet smooth enough that it still doesn’t sound too analytical, dry, or clinical. Such a fine line that Letshuoer walked with this tuning. Every contour of just about every note sounds well separated, glass-lined, articulate, without any smearing to my ears. I can even hear those micro-textures in a female vocal, in brass instruments, in strings, in percussion. Beyond that, I also hear that soft glittering of shimmer crests every female lead vocalist inflection. It actually took me a minute to notice and fully appreciate. For instance, hearing a track like the absolutely beautifully sung cover of “Fields of Gold (Live at Blues Alley)” by Eva Cassidy is a perfect example of absolute purity of tone. Though I’d never call the upper midrange “rich” per say… this track will show you how richly textured it is. There’s a difference. You can hear the breath work, the vibrato, without harshness and very natural to my ears. I won’t bore you with more examples, but I will tell you that females generally sound amazing on this set. The bonus is that it never sounds harsh to my ears. It’s a treat. 

Downsides to the Midrange 

I find that the midrange doesn’t really have straight up “issues”, but it does have subjective qualms that some folks might have. Like the lower midrange sounding a bit leaner than some may like. Sure, I’ve gotten used to it, but usually I want more of an authoritative and thick sound in this region. Perhaps a bit more warmth. While I don’t feel that all is lost, the lower mids can be somewhat stripped of emotional engagement. Honestly, it doesn’t bother me, but if you are coming off of a set which has that low-mid weight and emotional pull then you may find this to be a con. Also, something I didn’t talk about, but I should have is that the Cadenza 12’s upper midrange can be a bit too revealing. I say that because poorly recorded tracks or tracks of worse quality will sound exactly as they are… poor. Also, I should have added that there are some tracks that may come across a hair fatiguing for some sensitive listeners at higher volumes. Lastly, if you are the type who much more enjoys an easy going, relaxed, and less vibrant display which carries a more romantic and cozy warmth, you may not entirely enjoy the more matter-of-fact precision of the Cadenza 12’s midrange. Other than those possible issues, I think Letshuoer nailed it folks. 

Treble Region 

Okay folks, if you’ve thought I’ve given this set a good review thus far, hold onto your seats because I have only now gotten to the good part. Friends, without question the treble is the Cadenza 12’s greatest strength, or its most technically capable are of the mix. One of my friends on Facebook actually made the observation that the treble comes across almost to the quality of a top tier EST driver. I have to credit him, but man I wish I said that first. Lol. I couldn’t agree more. The treble of the Cadenza 12 is clearly a defining strength of this set. Highly resolving, very airy, open sounding, so effortlessly smooth yet highly resolving, perfectly tinselly as it carries such a sweet sparkle up top along with great extension into the upper treble. The bonus is that the Cadenza 12 is what I would refer to as the safe side of harsh. Don’t get me wrong, the treble region will bring anyone sensitive to the cusp of fatigue, but the clarity, high level of resolve, and timbral accuracy seem to save it from ever becoming truly grating. I love that the timbre keeps to this natural theme which is so good to hear considering that these are BA’s doing the work. I hear nothing artificial, no BA timbre whatsoever, and I hear nothing too thin or frail sounding. Every note has some bite, even some nice vibrant treble punch. It’s just nice. 

Timbre

I find that the timbre is very close to lifelike. I say that because it isn’t so emphasized and so brilliant that vocals and instruments sound too radiant. Again, every last inflection stays controlled with that nice smooth flow and cadence. I’d say that the treble is closer to straight neutral than it is bright. If that makes sense. Having said that, I could see some very sensitive folks taking issue with the emphasis, and I’m sure there will be some who feel the Cadenza 12 will be a touch too hot on higher volumes. Still, compared to other kilo-buck iems that I’ve tested, the Cadenza 12’s treble region is one of the best that I’ve heard, and clearly one of the best balanced armature treble regions that I’ve heard. Instruments never exhibit that plasticky sound, and they never sound too dry, especially for percussive instruments like cymbals or hi-hats. You don’t have that weird timbre, which is very refreshing. 

Extension 

Cymbals and hi-hats have clean leading edges without the splashy and smeared treble tizz of other lesser quality sets. But they also come through very clear at the outer edges of the sound field. The extension is so well rendered. I think I’ve said the word “clean” about 100 times already, but here’s 101 because the extension is very clean with the natural sounding sparkle and smoothness of a good EST (just like my friend said). Of course this extension, or this measured lift in the upper treble does a whole lot for the Cadenza 12. It contributes to the Cadenza 12’s keen ability to resolve all of the subtle micro-details, it provides the snap on attack, and it adds that holographic feel to my listening experience. Of course, this won’t be favored by everyone. I realize that not everybody desires a treble display such as this and prefer a more relaxed and less boosted treble past 10k. However, I won’t take back what I’m saying folks. For those who can appreciate a good treble, you’ll appreciate the Cadenza 12’s ability to extend the spectrum and add dimensionality to the sound field all the while coming across naturally in tone. 

Technical Stuff

Of course, it should go without saying that the treble region has wonderful note separation with plenty of air and space for each note to exist. Every last micro detail is heard loud and clear and each transient attack-through-sustain fires through rapidly whilst still keeping a tonal accuracy about it. You see, this is a speedy treble, with speedy drivers which can take on anything you throw at it short of very poorly recorded tracks. I mean, it handles them all. Songs like “Killing Time” by Magdalena Bay which shows off the Cadenza 12’s ability to separate and resolve cymbals in a fast way along with random brightly rendered synth lines without blending, smearing, or creating the dreaded treble tizz. Everything sounds distinct, every note sounds contoured, crisp, and cleanly edged. Another is “Evil Twin” by Lindsey Stirling. That super busy treble track is easy for the Cadenza 12. The dense synth notes, the bright and layered violins, and those sharper and focused percussive elements of this track are all resolved well and are actually very easy to follow. So, the treble has speed, resolve, transient swiftness, and good timbre and tonality along with a keen ability to bring all the subtle details to the surface without killing your ears in fatigue. I’d say it’s one talented treble region. 

Downsides to the Treble Region 

Okay, so, I am going against everything that I feel here, and I will list a couple issues that I know some of my friends will have. I don’t like it though. All in the name of full disclosure friends. Anyways, I have already spoken briefly but the Cadenza 12 may be a problem for some sensitive-to-treble listeners. Those who enjoy a more rolled-off, less intense, and more relaxed treble are not going to want to drop $2.5k on this set. That’s pretty much a fact. While the Cadenza 12’s treble brilliance doesn’t bother me at all… I’m not everybody else. I’m sure the brighter hue of this treble will give some people issues. Next, there are some recordings where the 10khz peak may become a hair too enthused as well. Listen folks, nothing is perfect. There is no set on planet earth which has no issues for everyone. Somebody will find fault with this set, and I could see the 10k peak may become an issue. There are some other even more picky issues that I am going to overlook at the moment as I think the emphasis is likely the largest and most obvious culprit when describing issues within the treble region. Other than those… great job Letshuoer! 

Technicalities 

Soundstage 

To my ears the actual width of the soundstage (subjectively speaking) is what I’d call a rage to above average. Closer to above average. Honestly, some tracks will sound super extended past my ears and others will sound a hair narrower in field width. Also, yes, I am Captain Obvious. Still, I don’t want to iver promise you all because I’ve heard some kilo-buck sets with absolutely grandiose stage width displays. So, average to above average for a kilo-buck set. Now, the stage height is definitely above average. Without question. The height is such that it almost lets notes breathe and resonate upwards. Almost to the point of that concert hall effect at times. However, the best aspect of the soundstage is easily its depth of field. The depth of stage is very deep, realistic to life, very well layered with great front to back recognition. Fantastic for complex mixes, even congested tracks, wonderful for live tracks and really, it’s great for any track that features some depth. Honestly, put all these together and you have a great stage folks. Clearly, it’s one of its strengths. 

Separation / Imaging 

I bet you can guess what I’m about to say here. I’ve only spent this entire review saying it. That is, the instrument separation or note separation is flat-out fantastic on the Cadenza 12. Every last instrument has those clean-cut boundaries and a distinct leading edge. Transients are tight, cleanly rendered, and they easily tighten the outline of all elements within the stage. Even in complex mixes or busy passages of music the Cadenza 12 doesn’t seem to have many issues at all with creating clearly defined separation between notes. Like crazy multi-layered and energetic metal tracks or those resounding and chaotic sounding orchestra swells the Cadenza 12 has no issues folks. Imaging is the exact same for me, it’s fantastic. The Cadenza 12 offers a clean sound, a precise sound, with a holographic and bigger stage size, with a realistic sense of depth and layering. It’s just so easy to place instruments. Vocals are dead-smack in the center (depending on the track), and all instruments pan so well left to right, they’re layered extremely well both up and down as well as front to back. I can’t say enough good stuff about the technical ability of this set. Definitely an S grade. 

Detail Retrieval 

Once again, detail retrieval is also a standout feature of the Cadenza 12. I mean, look at some of these detail revealing attributes; big airy stage, great separation, clean-lined, fast transients, barely any bass or treble masking, fantastic micro-dynamics, and it has such a clean crisp sound. There’s much more but I think you understand. Basically, the Cadenza 12 has all of the tools to be a top shelf detail retrieval beast. If you are one who enjoys scanning the sound field for the subtleties, or if you simply love the clarity and cleanliness of a detail rich sound then you’ll love the Cadenza 12. 

Last Words on the Letshuoer Cadenza 12 

What else can I say? I feel that we’ve established exactly who will enjoy this set and who may not. Definitely you already know if the Cadenza 12 seems like it’d fit your preferences. I think I could say that the Cadenza 12 is what I’d call a polarizing sound. To a degree anyways. However, just because it isn’t for everyone doesn’t mean that it isn’t one of the better sets within its range for a number of skill sets. Letshuoer showed off their ability on this one folks. Now, I never heard the original “pre-2024” tuning of the Cadenza 12, but I absolutely enjoy this version so very much. I’ve been taken aback with how well Letshuoer crafted and created such a technically capable and analytically gifted sound which is also wholly melodic, musically engaging, and immersive. So, few sets can claim that they can do what the Cadenza 12 can do. At least that I’ve heard. So, keep that in mind. I obviously haven’t heard every kilo-buck iem on the market. Still, I have been nothing but impressed and I find that the Cadenza 12 is well worth the cost of ownership. For all of the research and development, the years of hard work, and the professional experience put into this set I think it deserves every penny folks. I don’t say that lightly. This set took three years from conception until it finally hit the market. I don’t know if you get this, but that takes money folks, and it takes time. So, anyone who complains about iem prices… well… they can start to do the math. There’s a reason the Cadenza 12 costs so much and it has nothing to do with arbitrarily inflating the cost out of selfish desire. Hard work was put into this set, and the final result is a testament to that hard work. Absolutely it’s worth every penny. 

The Why 

I feel like this entire review was a big “Why”. All I’ve done is praise different aspects of this iem. The funny thing is that I usually don’t gravitate to this type of sound. I don’t know why I’m just mentioning this now, but it’s true. So, to answer why… because the Letshuoer Cadenza 12 is clearly one of the most luxuriously simple designed sets that I’ve ever seen. The aesthetic is so pure. The look and feel is simply so beautiful friends. Something about the mirror finish, the Titanium, the amazing build quality, the comfort, and the sheer classiness of this set which screams Creme de la Creme. Also, the packaging is top tier. The box, the contents are all so nice. Almost bougie. The presentation is so well put together and fun to unbox. However, of course it’s the sound which describes the “why” this set is worth every penny. 

That Sound… 

I really enjoyed the sound signature of the Cadenza 12 even though I typically don’t go for a more analytical sound. Perhaps it’s because there is a very refined smoothness to that precise sound. There’s a wonderful harmonious and tuneful nature to the sound. The bass hits fast, good sublevel depth, nice density, and the bass uplifts the rest of the mix promoting clarity. Also, the midrange is so well detailed, so clean, with awesome presence against the rest of the mix making instruments and vocals come across very realistic, lifelike, and they have great natural timbre. I hear just enough shimmer, just enough sparkle, and nothing harsh for my ears. Next, the treble is clearly the Cadenza 12’s top skill. I am so happy with how this treble region turned out. There’s no detail which gets overlooked due to the transparency. It has just enough brilliance to uplift frequency wide without sounding too sharp. I hear great note bite, nonabrasive crispness and edge, whilst also sounding very smooth in cadence. Once again, the treble sounds like a very good EST treble. Friends, the Cadenza 12 is one of the better detail retrieval iems past $1k without sounding completely dry and clinical as it has a nice measure of musicality. But also, the soundstage is very much holographic with great note separation, and it has a very clean and multi-layered sound which adds wonderful dimensionality to any track. There’re many more reasons, but I think everyone got the point. This set is worth every penny and it’s an easy rec from me. Good job Letshuoer. 

Conclusion 

To conclude my full review and feature of the Letshuoer Cadenza 12 I do have to thank the good folks over at Letshuoer for providing the Cadenza 12 for review. I have always been such a fan of Letshuoer and love the way they do business. Truly one of my favorite groups to collaborate with. They give me no time frame on review; they let me do what I have to do and for me that is just awesome. I wanted to complete a long-term review and I was able to do that, so… thanks. Also, I need to thank you, the reader, for taking the time to actually read my words. Mobileaudiophile.com truly thanks you. It’s you that we do this for and it’s you who keeps the doors open (so to speak). Thank you so much. 

Other perspectives 

Now that you’ve read this review, I hope you will click some more links and check out other reviews of the Letshuoer Cadenza 12. This is such a subjective and personal hobby folks. No two people are exactly alike. Heck, no two reviewers are exactly alike. We all have different tastes, different likes and dislikes, different gear, different music libraries, and we all haven’t been down the same journey through audio. Get other thoughts and ideas about this set before plopping down the money for it. So, I do hope you take the time to read other thoughts. There are so many amazing reviewers who also want to help and may make it easier for you to find the perfect product to spend your hard-earned money. With that, I’m done! I hope each of you are doing well and good. Take care, stay as safe as possible and always… God Bless!