Hidition Viento-R custom in-ear monitor review: Tunable reference


Hidition Viento-R & Custom Art Harmony 8 Pro

Hidition NT-6: The Viento-R is closest to the NT-6 with both switches in the up position, with quite similar presentation perspectives and similar bass quantities.  The VR is slightly more open sounding with a slightly more distant presentation, especially in the upper midrange.  The soundstage of the VR has better clarity due to a better focus within the soundstage leading to better transparency and more defined imaging, if just by a bit.  Detail levels are close, but the NT-6 slightly outperforms.  Performance is about equal, but each has their own slight victories, such as the NT-6 presenting a hair more detail and resolution, having better coherence, and dynamics while the VR displayed slightly better clarity and transparency.  Detail articulation is slightly higher from the NT-6, which has a more analytical note on average.

Bass of the NT-6 has better capability, which shows in bass-heavy tracks, pushing the quantity higher than the VR, even with the bass switch in the up position.  This leads to the VR having more bass than the NT-6 when playing tracks with relatively quiet bass lines while the NT-6 has more prominent bass with bass heavy tracks.  The VR is slightly warmer with the switch down, and the difference increases with the switch in the up position.  The midranges are quite similar, but the upper midrange of the NT-6 is a bit more forward and prominent, changing the tonality and feel of the presentation slightly.  Imaging is about the same, and the differences come down to the note presentation and frequency response differences.  Treble isn’t too far off, but the NT-6 has a bit more prominence while the VR treble is slightly more natural and smoother.

Choosing between the Hidition NT-6 and Viento-R is a difficult decision as they both are similar and offer slightly different strengths.  The NT-6 performance is more detailed and has better low end capability with a more analytical sound while the VR is slightly smoother and more natural, more open and spacious, and has switches that slightly change the tonal balance.  Both are amazing, and it comes down to your preferences.




Hidition NT-6 Pro: The NT-6 Pro’s emphasis at both ends is apparent in direct comparison with the more spacious Viento-R, even with the VR’s bass switch set to boost.  While the NT6P and VR share a similar presentation, the VR sounds more open and has a very slightly larger presentation space with better focus within the soundstage and similar imaging.  Notes are similar, but the VR has a slightly more natural overall ADSR that makes notes a bit less offensive when they aren’t of great quality.  Detail levels of the NT6P is slightly higher, as is articulation that leads to an ever so slight clarity advantage despite the better soundstage focus of the VR.  The NT6P is slightly more dynamic while the VR has a bit better coherence and transparency is similar.

The deep bass of the NT6P is more emphasized, more capable of sustaining notes, and has a tighter, more revealing overall sound while the VR is warmer.  The midranges are close, but the slightly more open sounding VR’s focus advantage and more natural note ADSR leads to a more natural experience compared with the analytical NT6P that has higher detail levels and better detail resolution.  The upper midrange isn’t too far off between the two, but the treble is divergent as the NT6P has more emphasis.  The enhanced treble of the NT-6 pro can sound unnatural in comparison to the Viento-R, which is more forgiving and overall tonality of the VR is more realistic.

If you are looking for ultimate performance and want the fun sound of boosted deep bass and upper treble, the Hidition NT-6 Pro is hard to beat, as it also reveals all the details within your music.  The Hidition Viento-R is similar, but offers a bit more natural sound with slightly less capability, but offers the ability to change the tonality/presentation with switches.  If you want close to NT6P performance, but don’t want an analytical sound, the VR is a great choice.




Lear LCM BD4.2: The Viento-R and LCM BD4.2 have somewhat similar tonality but different presentation styles.  The comparison was done with the bass switch of the VR up and the BD4.2 bass set to 2 o’clock.  Both have an openness to them, but the BD4.2 presentation perspective is more distant with an overall more spacious feel.  Proportions are similar, but the BD4.2 has slightly more depth and images better compared with the width while the VR has better focus within the soundstage.  The average note of the VR isn’t as thick as the BD4.2 note, with a quicker attack and release resulting in a slightly more aggressive sound.  The BD4.2 has a slight resolution advantage within the soundstage, but detail levels are close and the better articulation of the VR can give the sense of more detail.  Coherence and transparency are about on par while dynamic range of the BD4.2 is a bit better.

Bass of the VR is faster and punchier with a more precise feel but the BD4.2 has much better note sustainment capability.  The smoother LCM BD4.2 is warmer with a thicker overall sound through the more laid-back midrange.  Upper midrange of the VR is a bit more prominent, but has similar integration within the rest of the frequency spectrum.  The treble of the VR is also slightly more prominent, but the BD4.2 notes exhibit a more natural decay.

These monitors both offer sound tuning and a different take on neutral, with the Viento-R offering a well-articulated, fast, and punchy sound that brings detail to the forefront in contrast to the LCM BD4.2’s laid-back and more natural sounding notes.  Picking between these will come down to the presentation of space and note, but picking up one of each will let you enjoy two separate perspectives.




Ultimate Ears In-Ear Reference Monitors: The Viento-R is closest to the In-Ear Reference Monitor with both switches in the down position.  Spatially the VR and IERM have similar presentation perspectives, but the VR is more open sounding and has a larger presentation space.  Imaging of the VR is more precise and the resolution within the soundstage is greater, revealing more detail resulting in a better focus.  The note presentation of the VR is more natural, especially in the treble region where the IERM has a sharp bite.  The VR is more dynamic and impactful with better coherence and transparency to compliment the superior clarity.

The bass quantity, including warmth, is similar, except the VR has much better note sustainment, resulting in more reverberant bass notes being more prominent from the VR.  The midranges are presented from a similar perspective, but the VR offers a clearer window into the music. The upper midrange of the IERM is slightly more forward than that of the VR resulting in a brighter tonality.  Treble is more prominent with the IERM, but the quality of the VR treble note is significantly more natural due to more accurate note sustainment and release.

While the Ultimate Ears In-Ear Reference Monitors are nice for studio use or critical listening, the Hidition Viento-R offers so much more, with better detail, clarity, and capability.  Add the ability to adjust the sound for preference, and the value improves.  The IERM is a better choice for ease of purchase through a network of resellers, but the VR will offer rewards for the purchase.




Spiral Ear SE 5-way Reference: The Viento-R is closest to the SE 5-way Reference with both switches in the up position.  Spatially, the two are quite similar with the VR midrange switch in the up position, but the VR is a bit more forward with a bit larger overall size and a little more air.  With the midrange switch in the down position, the VR is more laid-back and a bit more spacious.  Note ADSR between the two is close, but the SE5 adjusts more with each track while the VR has a faster and cleaner leading edge.  Detail levels and resolution are ultimately higher on the SE5, but the VR articulates the detail more, making it easier to hear.  Coherence is close, but the SE5 is slightly ahead while the VR is a bit clearer.

Bass quantity of the SE5 is similar with neutral tracks, but when a song has a lot of bass, the SE5’s greater capability shows with more oomph.  Quality of the VR is slightly better, as the notes are tighter, but the SE5 has a bit better texturing.  The midranges are close in presentation, but the differences in note presentation makes for a different experience with the VR bringing the intimate details to the forefront while the SE5 is more focused on recreating the overall presentation.  There is more upper midrange presence from the VR resulting in a brighter tonality for vocals while the SE5 has more treble emphasis in comparison with the upper midrange, which results in different feels depending on the track.  The SE5 treble can sound great with quality tracks but is less forgiving than the VR when the treble is poor.  Both have exceptional treble quality.

The Hidition Viento-R and Spiral Ear SE 5-way Reference offer two different sounds that truly aren’t all that far apart in neutrality.  The SE5 is warmer with a slightly higher overall technical capability, and focused on recreating the overall presentation while the VR has a brighter tonality along with creating a crystal clear window into the music, allowing details to be easily heard.  These two make great compliments!




Rhines Custom Monitors Stage 3: The Viento-R is closest to the Stage 3 with the bass switch up and the midrange switch down.  Before I go any further into the review, there is a big difference in the quality of the treble that is accentuated with poor quality tracks.  If treble quality is a big deal, the VR is the easy choice, not that the S3 is bad, but the VR is just that good!  Back to the normal comparison!  Spatially, the VR has a larger overall soundstage size and is a bit more laid-back and airy, with better imaging and soundstage coherence.  The VR is more detailed, has better resolution, dynamics, transparency, and coherence across the frequency response.  Clarity and imaging are closer, but the VR is still ahead.  The notes of the S3 have an analytical feel, but are a bit thicker than the VR notes that have a more natural decay.

Bass quantity is similar, but the VR holds a slight quantity advantage as well as a quality advantage while the S3 is slightly warmer.  Both midranges image well and have a good focus within the soundstage, but the main difference is the size and spatial perception, as the VR is more airy and larger.  Tonally, the VR is more natural as the S3 has a upper midrange peak that gives an artificial brightness in comparison.  Treble quantity is similar, but quality is significantly different, with the VR treble being more detailed, having a more natural note decay, and being much less sharp and harsh.

The Rhines Stage 3 and Hidition Viento-R both have “reference” sound signatures, but the VR is more refined, detailed, and has a much smoother treble region.  The warmer S3 has a fun component build in that makes it musical and enjoyable while the VR is a much more precise instrument.




[Sneak Peek] Custom Art Harmony 8 Pro: The Viento-R is closest to the brighter H8P with both switches in the down position.  Spatially, the VR has a bit closer presentation perspective but a larger overall size, although with many songs the H8P soundstage size is close.  When a lot of spatial information is present, the VR’s large space shows, although the H8P has a bit better proportions from width to depth.  The VR has better focus within the soundstage, and while both offer great clarity, the razor sharp focus of the VR gives it the nod.  Detail levels, resolution within the soundstage, and dynamics are better with the H8P while the VR images better.  Coherence, transparency, and articulation of details are all close.  Notes of the VR are a bit more natural with a bit longer average sustain than the H8P and the ADSR of the VR is slightly more capable.

Bass quantity of the VR is slightly higher, but the H8P has more note sustainment capability resulting in very bass heavy tracks having more emphasis.  The VR is a bit warmer and while the midranges are similar, the VR has better clarity into the soundstage and a more natural note but tonality of vocals on the H8P is a bit more realistic.  The upper midrange and treble of the H8P are more emphasized resulting in a brighter overall tonality, but the biggest difference comes in the note smoothness, as the VR is quite a bit smoother and much more forgiving while retaining nearly the same level of detail.

These two competitors offer similar but different sound signatures and strengths.  The silicone shelled Custom Art Harmony 8 Pro from Poland is bright and more analytical with a very neutral presentation, exceptional capability, and great tonality.  The Korean Hidition Viento-R also offers a presentation that is on the analytical side, but has a more natural treble note, and when combined with the extremely clear sound, it conveys detail in a polite way.  Switches on the VR give it an advantage if you want to be able to adjust the sound.  Both offer something special making choice between the two difficult.


[Sneak Peek] EarSonics EM32: The Viento-R sounds the closest to the EM32 with the bass switch on and the midrange switch off.  Spatially, the EM32 presentation perspective is similar, as is the overall size of the presentation, but the focus within the soundstage is much clearer and focused from the VR while the EM32 has slightly better imaging.  Detail and resolution of the VR is better, as is clarity, transparency, and coherence across the frequency spectrum.  ADSR of the VR is superior, with better capability and notes are much more analytical in general compared with the thicker EM32.

Bass quantity is strongly in favor of the EM32, which is capable of much longer note sustainment, but the quality of the VR bass is a good deal higher for a significantly different feel in the low end.  The EM32 is much warmer, in part due to the longer sustain of the thicker notes, which carries to the warmer, smoother, and richer midrange.  With a large contrast in midrange performance, the VR’s razor focus and better detail articulation reveal more instrument detail.  The upper midrange of the VR starts to become more accentuated in contrast to the EM32, which has a slight dip.  While the EM32 isn’t lacking in treble, the VR has much more treble presence as well as far superior note quality as the EM32 has too much of an edge.

Differing quite a bit in frequency response, the EarSonics EM32 will appeal to a different crowd than the Hidition Viento-R.  Those looking for smooth, warm, and powerful with an excellent musical quality and imaging will be happy with the EM32 while those that want a more analytical, clear sound should side with the VR and the excellent clarity and detail articulation.  Or, get one of each for a complimentary pair of high-performing CIEMs.



Hidition Viento-R with DX90

Portable Sources, DAPs

Sandisk Sansa Clip+: Paired with the Clip+, the Viento-R sounds excellent and far superior to any stock earbuds or even pretty much anything I have heard under $1K.  The clarity and focus of the VR works well with the Clip+, and the low output impedance provides a good, tight presentation.  Detail and space don’t compare with higher-end sources, but the overall performance isn’t bad, especially considering the price. 4/10

Apple iPhone 5: The Viento-R reveals plenty of detail and has a bright sound with the iPhone 5.  Bass is powerful and plentiful, but not the tightest.  Comparing directly with the Clip+, the overall performance isn’t as clean with sharper notes that don’t have as well defined edges.  While the VR sounds good with the iPhone 5, the combo leaves a lot of sound quality on the table. 3/10

Fiio X3: The X3 is a solid match for the Viento-R, with a good spaciousness, control, and musicality. Compared with the iPhone 5, the X3 outclasses the phone with a larger soundstage size and better control that translates into a cleaner sound.  In comparison with the Clip+, the X3 offers a better spatial performance with additional detail.  However, compared with the DX50, the X3 doesn’t have quite the space nor the resolution. 5/10

iBasso DX50: Pairing well for an involving, musical presentation, the DX50 provides excellent presentation depth, detail, clarity, and precision, pushing the VR to perform at a high level that results in a realistic recreation of music. 6.5/10

iBasso DX90: The DX90 takes what the DX50 brings to the Viento-R, which is great spatial qualities, detail, clarity, and precision and improves upon it.  The presentation is more open and airy with better projection from a larger space while the resolution within the soundstage is more revealing of micro-details.  Bass is tight and well controlled, the midrange has excellent imaging, and treble is extended and natural. 8/10

iBasso DX100: The DX100 is an excellent match for the Viento-R to reveal detail not often heard by most that listen to music.  Spatial qualities are excellent, and marginally better than the DX90, but the resolution and level of detail takes a step up.  Overall, the DX100 is accurate, realistic, and revealing adding to the realism and emotion of music. 9/10


Portable Sources, DAPs with Amps

iBasso DX90 ->

Lear FSM-02 V2, class A: The FSM-02 V2 improves upon the DX90 headphone out to an extent with better imaging, a slightly larger overall space, smoother note edges, and a more controlled presentation for a more natural presentation.  9/10

Furutech ADL X1: The X1 opens up the sound quite a bit, giving more air and adding liquidity to the notes while adding detail and improving layering and resolution within the soundstage. Unfortunately there is a low level of hiss, reducing the score by 0.5.  9.5/10

Portaphile Micro with MUSE op amps: The pairing adds spatial quality and precision to the DX90 headphone output performance, with tighter notes and a higher level of detail and resolution.  Spatially, the presentation size expands a bit, but not by too much. 9/10

Portaphile 627: The 627 adds size and layering to the headphone output of the DX90 leading to a punchier, more accurate, and open sounding Viento-R.  Note ADSR is about the same as the headphone out, unlike the ADL X1, which adds a bit of liquidity.  Performance is close to the Micro, but with a bit larger spatial presentation. 9.5/10


Source Summary: The Viento-R performs well with better lower-end equipment and scales up with higher performance gear.  Source transparency allows the Viento-R to articulate differences in DACs and better amps ad space and control.  Ultimately the Viento-R performs well with a wide range of sources, but you owe it to yourself to use a source better than a phone!


Hidition Viento-R 05


The Hidition Viento-R custom in-ear monitors are special and earn a THL Recommendation.  The brighter sound has an analytical tilt that conveys detail well, but notes remain natural from top to bottom of the frequency spectrum.  The vented design gives an open, airy sound with best in class center imaging and focus within the soundstage for a clean, precise sound that is both revealing and enjoyable.

The two switches allow the quantity of the bass and midrange presentation to be adjusted to personal preference, environment, or source, although the changes aren’t huge.  Compared to other analytical CIEMs that are on the brighter side, the Viento-R separates itself with smoother notes making it easier to listen to.  Overall the Viento-R is a top of the line performer that offers exceptional performance with special characteristics.

THL Recommended Badge 2014Pros

–       Exceptionally clean, precise sound with best I have heard center imaging and soundstage focus
–       Natural notes that recreate a high level of detail that is well articulated yet smooth

–       Bass note sustainment isn’t quite up to level of other top-tier CIEMs

View the Hidition Viento-R in the Custom In-Ear Monitor Review List



Picture of average_joe


Having a life-long love of high-quality audio and gadgets, average_joe got back in touch with his audiophile side after a hiatus caused by life. His focus became headphones and related gear as the size and price fit his life better than home audio. He believes the entire audio chain is important, and likes to continue to think past the headphone and on into the head, as he believes understanding the details of how we hear will lead to a better audio experience.


13 Responses

  1. Hey, Author, I’m having a dilemma between getting SE5U or Prelude, I want the most natural sounding CIEM that could sync well with most genre, would it be possible to recommend me which one would be more suitable?

  2. I do have a preference, but my preference might not match your preference. Are the switches worth the price? It depends on what you will be using it for. I could be perfectly happy with the switches in one position, plus the difference the switches make is small.

    Do you have a preferred sound signature that could help determine which switch position to get?



  3. Do you have a preferred setting for the switches? I’m looking to get the Viento-R with the settings already tuned (no switches) as this drops the IEM’s price by about $500. On a related note, do you feel that the switches are worth the extra cost since the original price of $1100 no longer exists? Thanks!

  4. Hi James, I believe it is just my unit as I haven’t heard of this being a common issue. If it does happen, it is easy to fix as mentioned in the review. Cheers, Joe

  5. Hey Joe. Thanks for the wonderful review. You mentioned that your cable came loose after a while. Do you know if you owned a defective model? Or is this the case with all Viento R’s?

  6. Hi getdikinagas,

    Sorry for the delayed response as I just got back from a trip with no internet access.

    Yes, both the LCM BD4.2 and Viento-R offer some well done tuning options among others. The LCM BD4.2 tuning is a significant change while the Viento-R changes are subtle, but still effective. Either could be an excellent choice, but it depends on your preferred sound signature as they are both different.

    I usually ask questions of CIEM manufacturers and depending on how the company does business, I have provided feedback that has led to changes. What I mean by “how the company does business” is that sometimes once a product line is set, that product will not change, so a review regardless of the outcome is desired by the manufacturer while other times the manufacturer will make changes quickly.



  7. Oh. I meant to remove that ‘PS’. But I clicked on submit and only then realized. You may ignore it if you want.

  8. Such an enjoyable read. Thanks Joe! 🙂

    This concept variable tuning is something I find very appealing. A single be-all-end-all IEM isn’t possible, because different genres require slightly different presentations to be truly appreciated. An all-rounder IEM will come with it’s own list of compromises.
    It is possible to have a few UIEMs to cover your needs (lower cost being the main reason). But when you’re spending upwards of 1000$, you’d never want to be left wanting. Lear and Hidition have the right idea and it adds a lot more value in the same price range.
    Well, there are a few UIEMs with variable tuning (tuning filters, driver switch). But I don’t know if any have implemented it well.

    PS: When you review all these CIEMs, do you pass along your feedback or have a discussion with the company regarding improvements? I mean, is it a “here’s our CIEM, look forward to your review on THL” type of deal?

  9. Hi William, thank you for your kind words and being a fan and follower! We will continue to try to offer reviews that are audio quality based to help the audiophile decide.



  10. Dear TheHeadphoneList team,
    congratulation for this deep & great review 🙂
    Reading the review, a huge experience in the audio segment transpire between your words… this is why I’m a deep follower & fan of TheHeadphoneList…. weldone guys!

Leave a Reply

Your email address will not be published. Required fields are marked *

Recent posts