Excellent Review of Softears RSV In Ear Monitor Vs Dunu SA6 MK2 & Moondrop Blessing 2

Softears RSV

This post is all about reviewing Softears RSV In-ear monitors in detail and comparing them with the popular  established in ear monitors Dunu Sa6 Mk2 and Moondrop Blessing 2

Introducing the Softears RSV In Ear Monitor: A Harmonious Blend of Precision and Musicality

Softears RSV In Ear Monitor

In the realm of high-fidelity in-ear monitors, the Softears RSV In Ear Monitor emerges as a harmonious synthesis of precision engineering and captivating musicality. Crafted by Softears, this extraordinary in-ear monitor brings together a meticulously tuned soundscape and cutting-edge design to create an immersive using sonic balanced armature drivers experience that resonates with audiophiles and music enthusiasts alike.

The RSV In Ear Monitor, which stands for Reference Sound Five, exemplifies a profound understanding of tonal accuracy and audio fidelity. Drawing inspiration from the revered Harman Target curve, this exceptional in ear monitor moulds its sound signature around warm neutrality, embracing the nuances of each frequency with remarkable authenticity. With a sub-bass bass shelf that resounds with controlled impact and a midrange presentation that captures the heart of vocals and instruments, the RSV’s sonic canvas is rich and vivid.

A distinctive trait of the RSV lies in its mid-treble dip, an artistic choice that infuses the soundstage with a gentle warmth and organic allure. This mid-treble character paints a portrait of music that is inviting and intimate, creating an environment where listeners are captivated by its analog-like charm.

Beyond its auditory prowess, the RSV In Ear Monitor is an embodiment of sophisticated craftsmanship. The visual journey begins with carbon fibre-styled faceplates adorned with gold foil accents, creating an artistic blend of modern aesthetics and timeless elegance. This attention to detail extends to its construction, with a 3D-printed shell designed for a secure yet comfortable fit, accompanied by noise isolation that transports listeners into a private realm of sound.

As you venture into the world of the Softears RSV in ear monitor, you embark on a musical voyage where tonal accuracy and emotional connection converge. Its melodic tapestry, carefully woven by engineers and artists, beckons you to experience music in its purest form. Welcome to the realm of the RSV, where precision and musicality unite to redefine your sonic journey.

Technical Details of Softears RSV In Ear Monitor

Sensitivity: 125dB/1VRMS @1kHz
Impedance: 8Ω @1kHz (±15%)
Frequency Range: 5Hz – 40kHz (1/4’ Free Field, -3dB)
Effective Frequency Response: 20Hz – 20kHz (IEC-60318-4)
Total Harmonic Distortion + Intermodulation Distortion (THD+IMD) @94dB: <1% @1kHz
Cable Connection: 2-Pin 0.78mm
Shell: 3D Printed from Imported Medical Resin
Driver Configuration: 5 Balanced Armatures


Build and Comfort of RSV In Ear Monitor

The Softears RSV In Ear Monitor not only delivers exceptional sound but also showcases a remarkable blend of craftsmanship and comfort. With its meticulously designed build, this in-ear monitor is a testament to precision engineering and attention to detail.

The RSV’s carbon fibre-styled faceplates, adorned with elegant gold foil accents, create a visual statement that speaks to both modern aesthetics and timeless sophistication. These handcrafted faceplates make each pair of RSV IEMs a unique work of art, reflecting the care and dedication poured into their creation.

Beyond its visual appeal, the RSV is crafted for a comfortable and secure fit. The 3D-printed shell strikes a balance between ergonomics and aesthetics, ensuring that the IEMs sit snugly within your ears while offering lasting comfort during extended listening sessions. The design takes into consideration both the form and function, resulting in an IEM that feels like an extension of your music experience.

Whether you’re savouring your favourite tracks on the go or immersing yourself in studio monitoring, the RSV’s thoughtful build and ergonomic design ensure that you can enjoy your music with ease and style. It’s a true embodiment of the fusion between craftsmanship and comfort, enhancing both your auditory journey and your overall listening pleasure.



(Source: SuperReview)

The seamless integration of these three frequency ranges results in a sound signature that’s both captivating and engaging. The lows infuse power, the mids evoke emotion, and the highs offer nuance, collectively painting a vivid sonic landscape that breathes life into your music collection. The primary motto for the IEM is to provide enjoyable and engaging listening and that it does.

Lows: At the foundation of the Softears RSV In Ear Monitor’s sonic canvas lies a robust and impactful low-frequency performance. The sub-bass bass shelf, aligned with the revered Harman Target curve, bestows a dynamic energy to the lows. This boost brings forth an engaging sub-bass rumble that resonates with controlled authority, lending depth and power to the overall presentation.

The bass transients, while not the sharpest, exhibit a satisfying punch and resonance that enriches genres from electronic beats to resonant acoustic strings. One should also know that the IEM does not have a dynamic driver, yet somehow Softears managed to tune them the way it imitates the sound of a true DD, the bass is punchy, yet controlled and has good sub-bass extension.

Mids: The midrange of the Softears RSV In Ear Monitor stands as a testament to tonal accuracy and timbral authenticity. With a neutral and precise lower-midrange, vocals and instruments are rendered with clarity and definition. The upper-midrange takes a step forward, embracing around 10dB of pinna gain, infusing an enchanting forwardness to vocals and instrumental solos.

This combination allows the RSV In Ear Monitor to breathe life into vocal performances, providing a platform where singers and instruments unfold with remarkable fidelity and emotional resonance. Overall The mid section is pretty balanced, with excellent vocal presentation, the pinna gain is perfectly balanced to avoid shoutiness and the IEM is probably one of the best tuned in ear monitors at this stage.

Highs: RSV offers a delicate balance between warmth and precision. The lower-treble region presents a natural and accurate rendition of instruments’ transient attacks, offering a pleasing crispness without straying into sibilance or sharpness. A notable characteristic lies in the mid-treble dip, imparting a tubey-warm, analog-like character that adds a layer of warmth to the overall sound signature.

While this dip contributes to the RSV’s unique allure, it does introduce a softer transient precision. The upper-treble maintains a neutral presence, contributing to a balanced and cohesive presentation. It could be said that the IEM cannot compete with the likes of Monarch mk2 and other IEM’s with EST drivers, however, this IEM makes up for it with its tonality.


One of the Softears RSV In Ear Monitor’s remarkable feats is its compatibility with a wide array of sound sources. Whether connected to a smartphone, digital audio player, laptop, or professional audio equipment, the RSV’s high efficiency and ease of driving ensure that its captivating sound signature remains uncompromised. This adaptability makes it an ideal companion for on-the-go listening, studio monitoring, or casual music enjoyment.

The RSV’s carefully tuned sound signature transcends musical boundaries. Its harmonious blend of lows, mids, and highs lends itself equally well to various genres, whether you’re engrossed in the thumping basslines of electronic music or the intricate melodies of classical compositions. This versatility eliminates the need for multiple IEMs for different genres, allowing you to explore the entire spectrum of music with a single device.

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softears rsv cable 1
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Dunu SA6 MK2 vs Softears RSV In Ear Monitor

Lows: In the realm of lows, both the Softears RSV In Ear Monitor and the Dunu SA6 MK2 exhibit distinctive yet compelling characteristics. The RSV’s sub-bass bass shelf, following the Harman Target curve, presents a dynamic and impactful sub-bass rumble, injecting energy into the lower frequencies. In contrast, the Dunu SA6 mk2 takes a more balanced approach, offering a refined and controlled sub-bass that resonates with precision. While the RSV leans towards a more engaging and impactful presentation, the SA6 mk2 focuses on accuracy and tonal richness in its bass performance.

Mids: The midrange presentation of both IEMs demonstrates their unique tonal signatures. The RSV In Ear Monitor boasts a neutral and accurate lower-midrange, while its upper-midrange exhibits a forwardness that enhances vocals and instruments. On the other hand, the Dunu SA6 mk2 takes a more balanced midrange approach, offering a natural and well-extended presentation. Vocals and instruments on the SA6 mk2 are portrayed with exceptional clarity and tonal accuracy, allowing for a sense of intimacy and realism in the midrange performance.

Highs: As for the highs, both the RSV and the SA6 mk2 offer nuanced and articulate presentations. The RSV’s lower-treble delivers a natural and accurate transient response, while its mid-treble dip introduces warmth and analog-like character. In comparison, the Dunu SA6 mk2 showcases a refined and smooth lower-treble, contributing to its detailed yet non-fatiguing treble performance. Both In Ear Monitors maintain a neutral upper-treble presence, offering balanced and cohesive high-frequency representation.

In essence, while both the RSV In Ear Monitor and the Dunu SA6 mk2 excel in delivering exceptional sound quality, their sonic identities diverge in nuanced ways. The RSV emphasises engagement and impact in the lows, forwardness in the upper-mids, and a unique warmth in the highs. The SA6 mk2, on the other hand, focuses on tonal accuracy in the bass, clarity and realism in the mids, and smoothness in the highs. Each IEM presents a tailored sonic experience, allowing audiophiles to choose based on their preferences and musical genres of choice.

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(Source: SuperReview)
We have also done a similar analysis and comparison of Aful Performer 8 with Moondrop Blessing 2 

Moondrop Blessing 2 vs Softears RSV In Ear Monitor

Lows: When comparing the lows of the Softears RSV In Ear Monitor and the Moondrop Blessing 2, notable distinctions emerge. The RSV’s sub-bass bass shelf, adhering to the Harman Target curve, imparts a robust and impactful sub-bass presence, bringing energy and depth to the lower frequencies. Conversely, the Blessing 2 takes a more balanced approach with its sub-bass, providing a controlled and refined performance. While the RSV delivers engaging bass punch, the Blessing 2’s presentation leans towards precision and accuracy.

Mids: In the midrange arena, the Softears RSV In Ear Monitor and Blessing 2 demonstrate varying tonal qualities. The RSV’s neutral lower-midrange serves as a canvas for its forward upper-midrange, elevating vocals and instruments with distinct presence. The Blessing 2, on the other hand, offers a balanced midrange with an emphasis on clarity and detail. Vocals and instruments on the Blessing 2 are portrayed with lifelike accuracy and a transparent tonal character, enhancing its natural and revealing midrange presentation.

Highs: Turning to the highs, both IEMs present nuanced high-frequency performances. The RSV’s lower-treble conveys natural transient response, while its mid-treble dip contributes to its analog-like warmth. In contrast, the Blessing 2 boasts a crisp and extended lower-treble, offering a detailed yet controlled treble experience. Both IEMs share a neutral upper-treble presence, maintaining balance and cohesiveness in the high-frequency spectrum.

In summation, the Softears RSV In Ear Monitor and the Moondrop Blessing 2 embody distinctive sound characteristics that cater to varied preferences. The RSV emphasises impactful bass and a forward upper-midrange, complemented by its unique mid-treble dip. On the other hand, the Blessing 2 prioritises accuracy and clarity in its sub-bass and midrange, showcasing a detailed and controlled high-frequency performance. Each IEM offers a tailored sonic journey, allowing enthusiasts to choose the sound signature that resonates most with their musical inclinations.

graph 4

(Source: SuperReview)


  • Reference Sound Tuning: The RSV’s sound signature, inspired by the Harman Target curve, offers tonal accuracy and fidelity, making it suitable for critical listening and professional monitoring.
  • Distinctive Warmth: The mid-treble dip infuses the RSV with a unique warmth, providing an analog-like character that many listeners find pleasing and non-fatiguing.
  • Vocal and Instrument Excellence: The forward upper midrange enhances vocals and instruments, creating a captivating and immersive experience that brings performances to life.
  • Engaging Sub-Bass: The sub-bass bass shelf delivers impactful sub-bass rumble and punch, adding excitement and energy to bass-heavy genres.
  • Craftsmanship: The carbon fiber-styled faceplates with gold foil accents contribute to the RSV’s aesthetic appeal, making each pair a personalized work of art.
  • Comfortable Fit: The 3D-printed shell design strikes a balance between ergonomics and aesthetics, offering a secure and comfortable fit for extended listening sessions.
  • Sound Source Compatibility: The RSV’s high efficiency and easy-to-drive nature ensure compatibility with a wide range of sound sources, from smartphones to professional equipment.
  • Versatility: The RSV’s tonal accuracy and musicality make it versatile across genres, eliminating the need for multiple IEMs for different musical styles.


  • Mid-Treble Dip: The mid-treble dip contributes to the warm character of the RSV but also results in softer transients and reduced micro-detail retrieval.
  • Preference-Dependent: While the unique warmth and tonal character are appreciated by many, some listeners might prefer a more neutral and bright sound signature.
  • Fit for Smaller Ears: The larger shell size of the RSV might be challenging for individuals with smaller ears, potentially affecting comfort and fit.
  • Stock Ear Tips: Some users might find the stock ear tips lacking variety, requiring experimentation to achieve the best fit and sound isolation.


  • Sound Quality:
    • Low Frequency (Bass): (4.8/5) (A perfect 5 if it had a tad bit mid bass control)
    • Mid Frequency: (5/5)
    • High Frequency (Treble): (4.5/5)(Although very detailed and balanced, some IEM’s at this price point have more details comparatively)
  • Comfort:
      • Fit and Ergonomics: (5/5)
      • Prolonged Wear Comfort: (5/5)
  • Soundstage and Imaging:
    • Soundstage Width: (4.5/5)
    • Soundstage Depth: (4.5/5)
    • Imaging Accuracy: (5/5)

Overall Rating: (4.8/5)


The Softears RSV In Ear Monitor is an avant-garde 5-driver BA in-ear monitor that blends reference sound tuning with high efficiency. Its tonally accurate signature, warm and engaging mid-treble dip, and impactful sub-bass create a captivating listening experience. Crafted with carbon fiber-styled faceplates and gold foil accents, it’s a fusion of modern aesthetics and artistry. The RSV’s comfort, compatibility with various sources, and versatility across genres make it a well-rounded choice, though the mid-treble dip affects technical precision. Overall, the RSV In Ear Monitor offers a unique blend of musicality and craftsmanship.

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