Softears Studio 4

Technical Specifications:-
>Impedance: 12Ω.
>Sensitivity: 123dB/Vrms.
>Shell: Medical-Grade 3D-Printed Ear Shells.
>THD+N: <1%.
>Frequency Response Range: 5Hz-40kHz.
>Effective Frequency Range: 20Hz-20kHz.
>Interface: 0.78mm 2-pin Connectors.
>Termination Plug: 3.5mm Single-Ended.



I’ve been using the Softears Studio 4 for a while now, and I’ve got to say, they’ve really impressed me. Right off the bat, the build quality struck me. They’re made with this 3D printing tech that’s super precise, so every little part is just perfect. The material feels premium too—it’s this medical-grade resin that’s tough but doesn’t irritate my skin, even after hours of wearing them.

Design-wise, they’re pretty sleek. All black, nothing too flashy, but they have this professional look that I dig. They’re also surprisingly light. I mean, you can tell they’re solidly built, but they don’t feel heavy in your ears at all. And they fit really well, which is a big deal for me because I hate it when IEMs keep slipping out. These stay put, and they block out noise so well, it’s like I’m in my own little bubble when I’ve got them on.

Durability is another thing I’m happy about. I’m not gentle with my gear, but these have held up great. No issues with the cable or anything.

So yeah, if you’re looking for something that’s built to last, sounds amazing, and is comfortable for those long listening sessions, the Softears Studio 4 should definitely be on your radar.

The Studio 4’s cable is made of high-purity, oxygen-free copper, which is known for its excellent signal transmission1. It’s a durable choice, with a twisted braided design that’s meant to be tangle-resistant and sturdy.

However, I understand that compared to other IEMs in the same range, you might have come across some with cables that feel more premium or offer additional features that enhance the overall user experience. It’s a valid point, and many audiophiles do prefer a cable that matches the quality and aesthetics of their IEMs.

While the cable of the Studio 4 may seem average in appearance, it’s designed to be functional and replaceable. This means you have the option to swap it out for an aftermarket cable that better suits your style and preferences, thanks to the standard 0.78mm 2-pin connectors1. It’s all about finding that perfect match for your personal listening experience

•I am using @DUNU-Topsound Hulk Pro mini cable with this set




When you get your hands on the Softears Studio 4, you might find that the stock tips don’t quite hit the mark. They just don’t seem to do justice to the IEMs, so I tossed them aside. Instead, I’ve switched to using Dunu Candy tips, and the difference is night and day. The fit is better, and the sound isolation improves the overall audio experience.

If you’re looking to enhance your listening sessions further, you might want to consider trying out Spinfit W1 or JVC Spiral Dot++ tips. These are known for their comfort and the way they can fine-tune the sound profile to your liking. It’s all about finding the right match for your ears, and with these alternatives, you’re likely to notice a significant upgrade from the default set.


•Source Dependency: The technical prowess of the Studio 4 means it performs best with high-quality recordings. Poorly recorded tracks may not benefit as much from its capabilities, and the flaws in such recordings could be made more apparent.

•Tasting source - @Questyle M15/ @Cayin RU7/ @Shanling H5/ @Astell & kern SP1000M/ @FiiO BTR7/ @HiByMusic R3 ii/ @fosi AUDIO DS1/ @MOONDROP dawn pro/ @iFi audio hip DAC V2/ ifi zen DAC v2/ @Lg V60 (impedients unlock)/ @Sony Xperia 1 MK3


The Softears Studio 4 has garnered attention for its sound quality that’s both well-balanced and detailed. It’s praised for having an excellent tonal balance and clarity across the frequency spectrum, making it a solid choice for those who appreciate a neutral sound profile.

The bass is described as tight and controlled, which should please those who prefer precision over a bass-heavy presentation. The midrange shines with its natural and smooth character, ensuring that vocals and instruments are rendered with authenticity.

Treble in the Studio 4 is detailed and extends well, providing that sparkle and airiness without being overly sharp or sibilant. This makes it suitable for long listening sessions, as it doesn’t induce listener fatigue.

Overall, the Studio 4 seems to be a hit for those looking for an IEM that offers a professional studio sound at a competitive price point, especially within the sub-$500 category. It’s a well-regarded piece of gear among audiophiles and professionals alike.

The bass region is the foundation of music, providing rhythm and depth. In the Softears Studio 4, the bass is crafted with a focus on quality over quantity.

Pros:
•Quality Over Quantity: The bass is not overemphasized, which keeps the overall sound signature neutral and balanced. This approach allows for a clear distinction between different bass layers and contributes to the overall clarity of the music.

•Sub-bass: The sub-bass has a good rumble and is well-controlled, providing enough presence to enjoy the music without overwhelming the other frequencies. It has a good weight and hits deep, enhancing tracks with a solid low-end without bleeding into the mid-bass or mids.

•Mid-bass: The mid-bass is powerful yet tight, with a deep thump that brings energy to the music. The speed is just right, ensuring that every beat is well-defined and retains its power. This results in a detailed and impactful bass response, where instruments like bass guitars sound lively and natural.

Cons:
•Subtlety May Not Suit All: Listeners who prefer a more aggressive bass might find the Studio 4’s bass too subtle. The focus on neutrality might not satisfy those looking for a bass-heavy experience.

•Detail Over Warmth: While the bass is detailed, some might miss the warmth and fullness that comes with a more pronounced bass boost, especially in genres like hip-hop or electronic dance music.

Musical and Instrumental References:
•Electronic Music: In Daft Punk’s “Around the World,” the Studio 4 delivers the driving bassline with precision, allowing the synthetic textures to come through without muddying the mid-range.

•Rock Music: The opening bass riff in Muse’s “Hysteria” is tight and punchy, showcasing the Studio 4’s ability to handle fast-paced and complex basslines.

•Classical Music: The double basses in Tchaikovsky’s “Swan Lake” have a depth and resonance that add to the orchestral tapestry without overpowering the delicate balance of the ensemble.

In conclusion, the bass of the Softears Studio 4 is designed for those who appreciate a balanced and accurate bass response. It provides a solid foundation for a wide range of music genres without ever taking center stage unnecessarily. While it may not cater to every preference, particularly for those who favor a more bass-forward sound, it stands as a testament to the pursuit of high-fidelity audio reproduction that respects the integrity of the original recording.


The mid-range is often considered the heart of the music, carrying the bulk of vocals and many instruments. In the Softears Studio 4, the mid-range is treated with respect and attention to detail.

Pros:
•Natural Vocal Reproduction: The mid-range is where the Studio 4 truly excels. Male vocals have a richness and depth that make them feel close and personal, as if the artist is performing right in front of you. Female vocals are crystal clear with a lively energy that can make the hairs on the back of your neck stand up.

•Instrumental Clarity: Instruments in the mid-range, like acoustic guitars and pianos, are rendered with a clean and clear presentation. The separation between instruments is impressive, allowing each one to stand out without muddying the others.

•Warmth and Body: The lower mid-range has a slight warmth that adds body to the sound, giving a fuller experience, especially noticeable in genres like jazz or blues.

Cons:
•Potential Overemphasis: Some listeners might find the mid-range a bit too forward, which could lead to a sense of congestion in very busy tracks. This might overshadow the subtleties in the music, especially in complex orchestral pieces.

Musical and Instrumental References:
•Jazz: The upright bass and saxophone in Miles Davis’ “Blue in Green” have a lushness that fills the room, thanks to the Studio 4’s mid-range capabilities.

•Rock: The rhythm guitars in The Eagles’ “Hotel California” have a presence and definition that let you hear every strum and pick on the strings.

•Classical: The cellos and violas in Yo-Yo Ma’s rendition of Bach’s Cello Suites are warm and resonant, with each note distinct and full of emotion.

Overall the mid-range of the Softears Studio 4 is a well-crafted balance of clarity and warmth. It brings vocals and instruments to life with a naturalness that’s both engaging and immersive. While it may not be perfect for every genre or every listener, it provides a sound that is both professional and accessible, making it a worthy consideration for those seeking a high-fidelity audio experience.

When we examine the treble of the Softears Studio 4, we’re entering the realm of high-frequency sounds where the magic of clarity and detail comes to life.

Pros:
•Clarity and Precision: The treble is crystal clear, allowing every high note to be heard with precision. It’s like the clear ring of a bell in a quiet room—distinct and pure.

•Instrumental Fidelity: High-frequency instruments are reproduced with remarkable fidelity. The tinkle of a high-pitched triangle or the bright chime of a celesta is heard with a lifelike presence.

•Vocal Smoothness: Sibilant sounds in vocals, which can often be piercing, are smoothed out beautifully. Listening to the soaring vocals of Freddie Mercury in Queen’s “Somebody to Love” is a treat, with every ‘s’ and ‘t’ sounding smooth and controlled.

Extended Listening: The treble is tuned to avoid listener fatigue. You can enjoy your favorite albums back-to-back, like Pink Floyd’s “The Dark Side of the Moon,” without any discomfort.

Cons:
•Reserved Sparkle: Some audiophiles might find the treble slightly reserved. While it’s detailed, it doesn’t have the sparkle that some may expect when listening to the cymbals in a live jazz recording.

•Instrumental Energy: While the treble is clear, it may lack a bit of energy. The crisp attack of a snare drum or the bright brass in a symphony orchestra might not have the bite that some listeners prefer.

•Soundstage Perception: The precise treble contributes to a wide soundstage, which is excellent for orchestral pieces like Beethoven’s “Symphony No.9.” However, this can sometimes make intimate acoustic sessions feel less cozy. (Not exactly cons)


Musical and Instrumental References:
•Classical Music: In a piece like Vivaldi’s “Four Seasons,” the Studio 4 allows the violins to sing with a natural brightness, capturing the nuances of the bowing technique.

•Rock Music: The electric guitar solos in AC/DC’s “Back in Black” are delivered with enough detail to appreciate the grit and distortion, yet without any harshness.

•Acoustic Performances: The fingerstyle guitar work in “Dust in the Wind” by Kansas benefits from the treble’s clarity, allowing each plucked string to resonate clearly.

In summary, the treble of the Softears Studio 4 is designed for those who value clarity and detail over brightness and energy. It offers a refined listening experience that’s easy on the ears, making it suitable for extended use. While it may not satisfy those seeking a more vibrant treble response, it stands as a solid choice for listeners who prefer a more laid-back treble presentation.

•Imaging and Layering: The Studio 4 excels in imaging, placing each instrument in its own distinct space. This creates a three-dimensional soundstage that makes listening to complex arrangements, like a live orchestra, a truly immersive experience.

•Detail Retrieval: With an impressive ability to unearth the finer details in music, the Studio 4 captures the subtle breaths a singer takes, the light touch of fingers on a piano, or the gentle brush on a drum skin.

•Note Separation: The separation of notes is precise, allowing listeners to appreciate the individuality of each note in a chord. This is particularly evident in acoustic genres, where the strumming of a guitar or the pluck of a violin string can be heard distinctly.

•Resolution: The resolution is high, meaning that the music is presented with clarity and definition. This is beneficial when listening to high-resolution audio files, where every nuance is intended to be heard.

Musical and Instrumental References:
•Classical: In Beethoven’s “Moonlight Sonata,” the Studio 4 allows each piano note to be heard with clarity and precision, from the softest pianissimo to the most robust fortissimo.

•Jazz: The intricate play between the double bass and the saxophone in John Coltrane’s “Giant Steps” is rendered with meticulous detail, allowing the listener to follow each instrument as if they were in the room.

•Rock: The layered guitar work in Pink Floyd’s “Comfortably Numb” is showcased beautifully, with each layer of sound given its own space, making the solo truly stand out.

• The Softears Studio 4 is a technical marvel that will satisfy those who seek to dissect and appreciate every aspect of their music. It’s a tool for the true audiophile, designed to reveal the layers and textures of sound that are often hidden. While it may not be the perfect fit for everyone, especially those who enjoy a ‘warmer’ or ‘bassier’ sound, its technical capabilities are undeniably impressive.


Overall Sound: The Softears Studio 4 earphones give you a sound that’s rich and full. They make music feel alive and detailed, from the deepest bass to the highest notes. Everything sounds clear and separate, so you can hear each instrument on its own and enjoy the music the way it was meant to be heard.

Recommendation: If you love music and want to hear it with all the depth and detail that your favorite artists put into it, the Studio 4 is a great choice. They’re comfortable to wear, built to last, and they make all kinds of music sound amazing. Whether you’re into classical, rock, jazz, or pop, these earphones will make your listening experience better.

Brand’s house sound​

Studio 4 might be one of the top rising stars of Softears till date. Softears is a very well-known brand for it’s philosophy towards neutrality. They always provided music with out most honesty in their IEMs. Not only that but they managed to make this tuning very enjoyable throughout the years they are in the business. They discarded the thought that “Neutrality is boring”.

What I like about the brand​

The best thing I like about this brand is its commitment to the research and development of each of their products. They don’t release products left and right saturating the market even more. Each of their product be it Softears Twilight or RSV is beautifully crafted and well-researched. This continues with Studio 4 also.

Disclaimer​

Studio 4 was provided to me by ConceptKart. They always provide me equipment for review. They haven’t influenced me anyhow to say anything good or bad about this product. All thoughts and opinions are mine alone. Take a look at this product on their website.

Softears Studio 4​

Price Competition​

It retails for about $449 worldwide. At this price point, there is a huge number of IEMs to challenge it. I think it competes extremely well in the market right now, making it a glowing option to consider while purchasing an IEM even after 1 year of its release. In this price point, AFUL Performer 8 is another contender to consider & I will compare it at the end of the review.

Philosophy of the IEM​

The philosophy behind this IEM is pretty straightforward. It is neutral as its name suggests. But neutrality can be unforgiving where this IEM stands out in the crowd. Even though it is neutral, there is nothing about this IEM which is boring and non-captivating. Bear in mind that I always write reviews after I am well passed my honeymoon phase.

Tech Specs​

This IEM consists of four BA drivers made by Softears itself accompanied by a three-way crossover. But I dare you to judge this IEM based on the driver setup it has. Housed in a very stealthy resin 3D-printed shell. The cable along with this IEM is pretty sturdy and easy to manage without having too much memory as such.

Package​

Softears Studio 4 comes with a very strong and sturdy pelican case which is waterproof. IEMs are covered in mini pouches to keep them scratch-free, which is a great addition to the packaging. Although ear-tips are provided but I reviewed them with Divinus Velvet tips for the comfort it offers.

Design​

The IEM shell is one black pebble with lettering of “Softears” & “Studio4” on each of them. I very much like the stealthy look of the IEM. It blends perfectly in crowded places and doesn’t seek attention from people around. The shell is small enough in-depth, unlike RSV.

Build Quality​

The build quality seems pretty solid. The sets are neither heavy nor light. They provide confidence as such that a few drops might seem fine. Although I haven't drop-tested it myself overall they seem very sturdy.

Initial Sound Impression​

Studio 4 welcomes you with a very lifelike sound with a very accurate soundstage. The first thing when you put them in your ear, you will notice how accurate they sound. Remember I told you that it doesn’t sound boring? I will give you the bass so much so that is beyond what I expected from a neutral set. The midrange is extremely good and natural. Each and every part of the midrange is very tasteful. The treble is very neutral too. You won’t find any sharpness, not it will sound dark anyhow.

Comfort & Fit​

So far Studio 4 is not comfortable for me due to only one reason. Pressure build-up due to no ventilation. Being an All-BA set it doesn’t need ventilation and ventilation might screw up its SPL. Although a careful insertion is always preferred with a good enough tip selection. If inserted with jaws open it eliminates most of the pressure build-up.

Tip Rolling​

It does change its sound due to different tips but it is not as evident. The nozzle is big enough to send vibrations directly to your eardrums without interfering with the tips in most cases. However, note that the pressure buildup avoidance is a big reason to tip roll.

Objective Sound Impression​

Bass​

There is a very subtle 4db sub-bass extension in the 20hz. And it makes an arch through the midrange. Typically I don’t like this midbass elevation but in this IEM this works beautifully. There is a contrast between subbass and midbass but it is not enough to make it sound separated of any sort. It might seem that the decline from 100hz would contribute to the thinness of the midrange or it could lack any warmth in the lowermids, but this is not the case fortunately. The warmth is there and it doesn’t sound thin anywhere.


Bass overall is better than I expected to be honest. First of all the drivers might sound like not much but trust me on this, it feels like a cohesive DD nonetheless. It is enough snappy to maintain the speed of the attacks and the falloff is slow enough so it doesn’t feels like it is rushing to deliver bass. The gradual falloff is very analogue like and won’t feel like there is anything jumps out to you. In one word it is very cohesive and well-controlled while reaching deep.

Midrange​

At 200hz there is a dip noticeable in the frequency response which is not noticeable at all. This might’ve contributed to the overall thinness of the IEM which is not at all present. It is extremely neutral and the vocals shine in their separate places. There is also a hump starting at the 1khz and a sudden drop-off. Which is a very wise thing to do to increase the soundstage while maintaining the warmth. The Eargain peak is also fully extended with a very nice touch after 2.5khz, making the overall sound smooth.


Overall the mids are the crux of this IEM. It is so well-tuned that it can easily compete with higher-end products in the market if mids are the only thing you are considering. The timber of this IEM is excellent for the price to say the least. Every instrument sounds good with this IEM, every instrument sounds life-like. No hint of nasalyness and hunkiness can be spotted anywhere. The vocals are beautiful for both males and females. Full of texture and warmth as well as airiness when needed.

Treble​

After 4khz the treble is very inoffensive. There are dips here and there and there are no peaks that could feel unpleasant. The dip in 6k is a brave choice since it consists of some harshness in most of the genres. Although the dip after 9khz can be fixed to give it a more shimmering feeling that could really benefit the sound overall for a treble head like me. Rest the extension is there and air can be felt but it is not overloaded. In short, the treble is very safely tuned and well-refined.


For me, the treble felt a little less. As a neutral-tuned IEM I would’ve liked a more revealing nature of the treble. On the opposite side it handled poorly recorded songs very well and with ease. The poorly mastered tracks are nowhere sounded harsh and peaky, not tracks with great mastering sounded jaw-dropping due to the safe tuning.This kind of treble would be very good for someone who is treble-sensitive.

Subjective Sound Impression​

Resolution​

The resolution of this IEM is above average. The surprising thing about this IEM is that even though the treble is not elevated too much it is still producing contrasty details. From certain cues to trailing edges everything is prominent.

Soundstage​

The sound stage is not very big but it is very well executed. It revolves around your head in a sphere and no claustrophobic nature I felt there. This created an overall personal feeling while listening to any song, The voices do come from the front and are well positioned. It adapts to the song very well, if the number requires a big sound stage it will get big if it requires a personal sound stage it will also provide that.

Imaging​

Imaging is above average too. The separation is there between the instruments but they are not pinpointed although easily localized.

Drivability​

The drivability is moderate. It can run through sub $30 dongle DACs easily but upgrading sources would result in a more weighty, textured and well-defined sound throughout the frequency range, especially the mids and lower end of the spectrum.

Conclusion​

Few IEMs in this hobby can do everything. Neutrality, which provides true to the mastering. Forgiving enough to make everything sound good. Low end enough to satisfy EDM/Hip-Hop. Mids that could make the timber extremely pleasant to listen to. Treble to satisfy both sensitive and treble head. This IEM covers everything. I couldn’t recommend this enough.

Comparison​

AFUL Performer 8​

Resolution is slightly better in P8 (Mainly because of Psychoacoustics). The bass sounds better in Studio 4. The midrange is a bit more weighty on Studio 4 too. Treble is the main factor to consider while choosing any one of these. P8 is snappy and full of treble, be it air or extension, where Studio 4 is very controlled and subdued than the P8.


You can’t go wrong with any one of these. If you prefer extended and elevated treble then go with P8 if you want a reference grade treble go with Studio 4.

RSV​

RSV is more mid-forward, more rolled off in the treble. Details and resolution are better in Studio 4. Timber is a hint better in RSV. Both suffer from air-pressure build-up and fit and comfort is better in studio 4. They inherit the same DNA so nothing much else to dissect about.

Pros​

• Midrange
• Timber
• Resolution

Cons​

• Air Pressure Build-up

NON AFFILIATED LINKS​

Buy Softears Studio 4 - in India


Buy Softears Studio 4 - Outside India

Review Of The Softears Studio 4​

Introduction​

Softears is one of the most professional firms I've ever experienced, based on my own experiences with their infamous IEMs like the RSV and Twilight, but they've also been embraced by many audiophiles. This Chinese firm was founded in 2017 and has been developing professional high-end products, particularly in-ear monitors. They have recently begun to experiment with other areas, such as accessories, to widen the reach of their ingenuity and inventiveness. They recently announced a new professional IEM called as the Studio 4, and I was fortunate enough to receive a pair for evaluation. But before we go any further, I'd like to clarify a few issues.

Disclaimer​

*This is a review unit, courtesy of Concept Kart. All thanks to them for providing. And as I've said in all of my evaluations, the same is true for this one: all of the concepts I've expressed below are entirely my own, original ideas that haven't been influenced by anyone else. If interested, go to this link.
*I am not associated with the connection, and I receive no financial assistance from anyone.
*For the remainder of the review, I will refer to these IEMs as “Studio 4.”
*I am using different Ear-tips for convenience and better versatility.
*Finally, I will only evaluate Studio 4 based on their performance, even though I will explain how it feels and seems physically and aesthetically.

Specification​

The Studio 4 has an all-custom balanced armature set made up of four drivers connected to a three-way crossover. The shells are composed of 3D-printed medical resin, and like with other BA IEMs, they lack a pressure release port, causing pressure to build up in the ears. The Shells are dark black, with Softears inscribed on one side and Studio 4 on the other; altogether, Studio 4 is quite professional. Even though I have difficulties with pressure buildup in my ears, The Studio 4 were bearable because to their simple and ergonomically formed body; they fit well and the comfort was enough, but not for extended lengths of time due to pressure buildup; nonetheless, with tip-rolling, it was manageable. The cable that is provided looks and feels quite expensive, as one would expect from a professional studio set. The cable terminates with two pin connections on one end and a straight, single-ended 3.5mm termination plug on the other. The additional accessories include three pairs of eartips in various sizes, a cleaning tool, a 3.5mm to a quarter-inch adapter, a velvet storage pouch for IEMs, a cleaning cloth and a highly practical pelican case. According to the technical specs, the impedance is 12 Ohms and the sensitivity is 123dB. The frequency response ranges from 5Hz to 20kHz, and total harmonic distortion is less than 1%.

***Above Image Credits***

Sound​

The Studio 4 has one of the most precise and targeted tunings that I have ever had the pleasure of experiencing. The Harman target is followed objectively, but the resulting sound is much more than just a flat response. Instead, it offers a fuller and more present upper treble response, which is a delight to the ear. I must say that this tuning has become one of my favourites, particularly because it places less emphasis on the mid-bass and more on the sub-bass, yet it still manages to maintain a pleasing tonal warmth in the overall mix. What struck me most about the Studio 4 is the quality and timbre of the mid-range notes. They sound properly rounded and natural, allowing the notes to blend seamlessly. This is especially impressive considering that Studio 4 is an all-BA set, which often tends to sound fatiguing with a less full response. The Studio 4, on the other hand, delivers a non-fatiguing and safe overall sound, while also maintaining a fuller response that places the details precisely where they should be. I have experienced many other IEMs in the same price range, but most of them tend to sound more balanced or mid-centric, with some focusing on crisp and detailed notes. Unfortunately, this often leads to metallic or artificial characteristics being introduced, which can be distracting. Thankfully, Studio 4 does not suffer from any of these issues, and it is a pleasure to listen to. Let’s delve deeper into the sound and find out more about it.

Treble​

The response from the treble area is as expected: linear and crisp, with outstanding clarity and notes that seem larger and more calming to listen to. The region represents an unquestionably safe sound, with all singers and instruments providing crisp and fresh-sounding notes that are not harsh or tinny, but instead balance the tonal quality. The upper treble is extended and airy, but it does not provide a huge or cavernous sound since the entire environment is filled with a good awareness of note dynamics and revelation. Specifically, the voices sound quite pleasing and on the spot. The lower treble brings more aggressive singing and instruments, allowing for a more forward approach and optimum seating, resulting in a more complete experience. Though there is a tinge of staleness in the bodied notes, which may get monotonous for some since they are not light or open sounding, as I previously stated, they are "on point." The vocals are lively and mature, but the instruments provide well-toned notes, resulting in an organic response. As a result, the treble area is presented sublimely, linearly, and extensively.

Mid Range​

In the midrange, it has a very safely calibrated response that does not sacrifice tonal quality and produces more bodied notes with enough tonal accuracy. Though it is more vocal-oriented, the instruments as a whole feel somewhat muted. The main reason is that the voices are advanced while delivering a tonally warm sound that lifts the lower mid-range and builds up a filling response that partially obscures the instrument separation, eventually merging in the overall response. The upper midrange resonates with the same vigour as the lower treble but adds weight to the sounds. The vocals are the star of the show; whether male or female, both tend to sound true but have a feeling of closeted nature in that even after sounding forward, they do not open up too much, maybe owing to how the metallic and crisp notes are not overemphasised in the upper frequencies. The instruments have rounded notes and provide a solid sound, but as previously said, they fit in with the overall response and do not stand out. The lower midrange has an excellent tonal balance due to the warmth in the mix, which makes the notes weighty and thick, allowing for a crisp response. Also, because of how the BA responds, the quality is quite clear and revealing, to the point that it doesn't sound drowned. While I feel such a reaction is faithful, some may find it uninteresting. As a result, the overall presentation of the midrange area is natural, full-bodied, and upfront.

Bass​

I think Softears has done an excellent job tweaking the bass. I have three reasons why. The first is that, while the emphasis is on the sub-bass, the quality and presence of the mid-bass region are not lacking; the second is that, even when using a BA for bass, it does provide a warm yet clear and textured quality bass; and the third is that the warmth that flows into the lower mid-range does not collude with the lower mid-range and allow any influence over the higher frequencies other than bringing warmth and allowing for a natural response. Though I feel the amount and natural decay of the notes to be lacking, I provide a handful of bass to compensate for the dynamic presence. The same can be said about the mid-bass and how controlled it is, which causes the slams and thumps to strike in a very premeditated manner, at least that's how it seems. But, even for an all-BA IEM, I think it's great to have a very precisely tuned bass that is both controlled and warm. Overall, the bass area is textured, detailed, and well-presented.

Technical Performance​

The Studio 4 excels in technical abilities, demonstrating a promising prowess throughout the presentation with its equality-focused features. Whether it's staging, imaging, or resolution, it maintains the appropriate quality that places it among its peers. Let's be more specific.

Soundstage, Sound Imaging & Separation​

The surrounding sounds are more holographic, providing a clear impression of what is left, right, and in front of you. Though the response is spaced out left and right rather than front and back, it sounds closer than it seems. The same way I felt when I heard Softear's more premium product, the RSV. The imaging is likewise excellent, given that the notes are rounded and full-bodied but could have been crisper. The distance between the notes is enough to make them seem larger, although the distinction suffers slightly, particularly while listening to busy tracks.

Speed & Resolution​

The details aren't overly expressive, but they accomplish the job by displaying good macro and microelements. The assault and fade of the notes make me doubt a BA response, despite the fact that it is quick enough to resolve and sounds more natural. The magnificent nature prevents it from sounding chaotic.

Sound Impressions ​

Sources​

Sony WM1A - While listening to Studio 4 with WM1A, the response widens and extends, allowing the notes to be more open and distinct, highlighting their integrity and idiosyncrasies. The midrange, which sounded strong and aggressive, sounds properly staged, and the notes are nicely positioned, which improves overall technical ability. Both the voice and the instruments shine brightly. The bass and treble stretch further, leaving a hypnotic response; the bass sounds emphasized but in quality rather than quantity, implying that the bass is better spread out and the presence is less exaggerated overall. The treble is smoothed out, bringing air into the overall response. Finally, it transforms a dull-sounding set into an engaging one.

Tempotec V6 - While listening to Studio 4 with V6, the midrange becomes more dominant while the treble response is slightly hidden/tamed, but the bass is not completely suppressed; instead, the sound is richer and warmer. The whole presentation suggests that it is a multi-driver arrangement with a specialized dynamic driver, rather than an all-BA set.

Simgot DEW4X - I observed a substantial boost in audio response clarity and resolution after pairing Studio 4 with DEW4X. The soundstage became more concentrated and tighter, adding depth to the overall response. In my perspective, this improved the audio quality significantly. The details in the vocals and instruments were communicated authentically, resulting in a more engaging listening experience. The treble was more open without sounding overly airy, and the mid-range was somewhat recessed, making the vocals sound more defined. The high octaves were very well-represented, outperforming all of my other audio sources. The bass was mild, yet it had a strong presence without becoming overbearing. Overall, the audio response was more monitoring-specific, which helped to bring out subtle subtleties in the mix.

Tracks​

Millet - Anytime Anywhere
Anri - I can’t stop the loneliness
Kohana Lam - A Few Sentimental
Kohana Lam - Loving Me, Loving You
Uru - Kimino Shiawasewo
Uru - Kamihitoe
Kujira Yumemi - Kenka
Majiko - Kokoronashi
Anly - Sukinishinayo
Kohama Lam - A Few Sentimental
Kohana Lam - Loving Me, Loving You
Miliyah - Kono Yumega Samerumade
Rokudenashi - The Flame Of Love
Yu-Peng Chen - A New Day with Hope
Yu-Peng Chen - Another Hopeful Tomorrow
Yu-Peng Chen - For Riddles, for Wonders
Valentino Khan - Satellite
Kai Wachi - Happier By Now
Jawns - Erotica
ISOxo - how2fly
Kai Wachi - Happier By Now
Weeknd - Popular
YUNGBLUD - When We Die(Can We Still Get High)
Bring to Horizon - Kool-Aid
Middle Kids - Bend
FLETCHER - Leads Me On
Loathe - Aggressive Evolution
The Weeknd - Save Your Tears
Sigrid - Burning Bridges
AURORA - Black Water Lilies
AURORA - Runaway
X Ambassadors - Renegades
Lupe Fiasco - Words I Never Said
Macklemore & Ryan Lewis - Can’t Hold Us
Gotye - Somebody That I Used To Know
Jay-Z - Run This Town
Lady Gaga - Poker Face
Lady Gaga - Just Dance
Ladytron - Ghost
Travis - Love Will Come Through
LINKIN PARK - Somewhere I Belong
DJ Shadow - Six Days (Remix)
Hoobastank - The Reason
Ricky Martin - I Don’t Care
Tool - 7empest
Tool - Vicarious
A Flock Of Seagulls - Space Age Love Song
Zack Hemsey - Vengeance
Elton John - I’m Still Standing
The Moody Blues - Nights In White Satin
Micheal Sembello - Maniac
Guns N’ Roses - Sweet Child O’ Mine
A.R. Rahman - Kun Faya Kun

Conclusion​

So, after giving it all, Studio 4 has left a lasting impact with its sound and experience. To be honest, Studio 4 accomplishes nothing unusual or better; rather, it is the height of perfection in terms of tuning and sound. The way the BAs are adjusted and their distinctive characteristics prevent me from comparing them to other IEMs. It's only that the IEMs are tuned extremely precisely, yet it sounds safe and natural to everyone who gets to experience them. This IEM has effectively removed the distinction between pros and audiophiles. I won't say that these shine in this region or this portion since they excel in overall sound. However, beware of the monotonous sound that could catch you off guard, as the name implies, it sounds like a reference monitor. With that stated, I would highly suggest it to any audiophile for its excellent tuning and experience.