Intime Miyabi 雅【アンティーム】

Hooga

100+ Head-Fier
Uniquely special
Pros: Organic timbre delivering unique realistic rendering to acoustic music
Instrument separation unheard on alternatives below 600$.
Precise imaging.
Slammy, fast yet textured bass.
Organic textured vocals, especially female.
Addictive, energetic, unique-timbre trebles. Special prowess on metallic notes.
Stage projection in all directions, especially horizontal and vertical.
Easy fitting.
Very inexpensive for its quality.
Cons: Genuine acoustic timbre not ideal for some electronic music.
Some may find timbre too “raw”.
Some may find treble somewhat grainy, or excessively prominent.
In selected situations midbass may partially overshadow male vocals.
Tip rolling / investigation recommended.
Unenticing stock cable.
Difficult to source in EU / USA.
As some of my 18 readers may recall, I’ve been quite impressed by a prior Intime IEM model called SORA 2, which I wrote about one and a half year ago. That’s surely why when last summer I got notified that mr Watanabe had released some new IEM models, and in particular one supposed to be a sort of direct upgrade to the SORA project I didn’t hesitate much to order my pair of Intime Miyabi.

At the time of this article, Miyabi sells on the manufacturer’s site for JPY 21.450,00 which is approximately $ 150. Add another $ 30 to have that reforwaded to EU / USA by a service like Tenso or equivalent.

“Intime Acoustic” is not a known brand at all in the west, as it comes from a very small company limiting its commercial horizon to Japan, where it’s based. In my previous article I spent some lines about the company, and about the technology (developed, and sometimes even patented by the company’s owner) involved. I’m echoing such information here below, with appropriate updates, for the reader’s convenience.

Intime Acoustic, a.k.a. Ozeid Co., a.k.a O2aid.com…

Intime Acoustic is a brand owned by Ozeid Co., Ltd., a quite young (2016-founded) Takasaki City (JPN) based company. Its main business is actually not manufacturing, but consulting.

The owner and key developer Mr Yoshiyuki Watanabe has 35+ years of experience on devices and applications that use piezoelectric materials.

Rotate his company name “ozeid” (or even better its web domain name “o2aid”) by 180°. What do you read ?

That said, mr Watanabe also decided to deliver some of his competence in form of earphones, targeting young users – young like his children – aiming to convey (in his own words) “the good sound of Japan“.


Key technologies

Similarly to other models in Intime lineup, Miyabi is based on a dual-driver system including a 10mm dynamic driver, and a somewhat special ceramic tweeter taking care of the upper treble / top octave end.

A number of very interesting details are available regarding the technology inside them, let me summarise what the main claims are.


1 – “Vertical Super Tweeter”

VST is made of some sort of special laminated ceramics, instead of the most commonly adopted titanium oxide.

Fundamentally, laminated ceramics is supposed to offer more controllable vibrations.


Intime Sora 2

Conventional “super tweeters” are so-called as they reproduce sounds outside the audible range, but this Intime’s variation, thanks to the uncommon material selection in addition to their calibrations, has a different behaviour and reproduces overtones, effectively contributing to the highest-end part of the audible spectrum.

The Miyabi feature “third-generation" of such VST2 tweeters. According to mr Watanabe the improvement has to do with adopting dual ceramics, which ensures that the hysteresis characteristics are minimized, while sound pressure sensitivity is maintained.

For example, 3rd gen VST is supposed to offer richer overtones on piano notes, and crisper notes on a jumping saxophone. Owning a model based on a previous VST iteration (Sora 2) I can testify this is indeed the case.


2 – Graphene coating

A graphene coating has been applied to the Dynamic Driver unit, which – always according to mr Watanabe – is amongst the reasons why his drivers reproduce mid-high range frequencies with controlled power and good definition.


3 – Brass housings

Unlike what happens on the Sora line, Miyabi housings are made of brass. According to mr Watanabe, this choice contributes to delivery Miyabi’s signature soft, deep sustain and bass reproduction. I don’t know if the cause-effect liaison is right, but the result definitely is good.


4 – HDSS

Another unique (and patented, actually) technology adopted inside Miyabi, as much as inside Ti3, Sora, Sora2 too, is called “HDSS” as in "High Definition Sound Standard".

Its purpose is to suppress sound reflections inside the housing, resulting in cleaner output.


Intime Sora 2

Some sound waves are commonly uncontrolledly reflected inside the housing, impacting onto the dynamic driver diaphragm, causing dissonance from the intended purpose. With HDSS technology, the sound inside the housings is more controlled and does not “invest” the diaphragm randomly, allowing the dynamic driver to move “only” as a consequence to the signal source, as indeed it should.

This – according to Intime – increases sound realism and decreases fatigue. It has a down side though: it tends to purge too much of the high frequencies off the dynamic driver vibration.

This is where a careful calibration between the resolution of the ceramic VST2 and the mid-high range tuning of the graphene coated DD becomes vital, resulting in a bass with a solid outline, harmonious mid-high range and wide spatial expression – as in facts Miyabi does deliver, big time !


Full Device Card


Test setup

Sources: Sony NW-A55 mrWalkman / Questyle QP1R / Tempotec V1 + E1DA 9038D – Spinfit CP-145 tips - Dunu DUW-02S cable - lossless 16-24/44.1-192 FLAC tracks.


Signature analysis


Tonality

Miyabi’s tonality is a mild V, with modest bumps in the midbass and highmids, and unrecessed mids, all well reciprocally calibrated to offer a very pleasant overall presentation.

Most importantly, Miyabi offer an in-cre-di-bly “natural” (“organic”) timbre, so much that some may find it excessively unforgiving, almost “crude”. Acoustic instruments come across sort of raw, unadultered, nature they’d say in Paris – which grants the auditioner a unique “presence on the performance scene” sensation, as if sound were delivered to them prior to any postprocessing combing imperfections or such.

For someone like me listening for 99% of his time to acoustic jazz this is a unique, addictive experience which quickly turns into an invaluable asset.


Sub-Bass

Sub bass is moderately extended, fast, but a bit subduded in power vs midbass. More then adequate to render standup bass.


Mid Bass

Miyabi’s midbass is fast and slammy, yet articulated and textured. It’s evidently bumped up, offering very solid body to standup bass while staying respectful of mids at virtually all times.

Only occasionally and/or on specific musical genres or selections male vocals or guitars may come accross a bit subdued.


Mids

Miyabi’s mids are organic, realistic, very well modulated and textured – this in spite of them not being particularly forward. Pianos, cellos and guitars are very naturally rendered.

High mids are energetic and shiny, but always south of fatiguing – at least in my books, YMMV (we know the drill: highmids are one of those areas where personal sensitivity varies a lot).


Male Vocals

Male vocals, with particular regards to tenors, are very well rendered, textured and credibly organic. Bass voices may occasionally partially conflict with midbass on particularly crowded passages, especially when non-acoustic instruments are involed.


Female Vocals

Miyabi’s female vocals are even better than male: organic, bodied, at times even flutey. Never scanting into sibilance, they take advantage of the driver’s superb highmids tuning.


Highs

Trebles are no doubt one of the two areas on which Miyabi offers their best. I did hear a few other piezo tweeters, but simply not one holds a candle to what mr Watanabe can make his drivers deliver.

There is a veeeery faint “piezo timbre” occasionally emerging, but for the vast majority of the cases Intime’s VST deliver energetic, dynamic, sparkly, quite airy, well detailed and most of all addictively energetic treble.

I like to assume that part of the “organically brassy timbre” result is also due to the housings being made of… brass, indeed.


Technicalities


Soundstage

Miyabi’s stage projection is very good. The room is very well extended horizontally, shows an exceptional height, and very good depth.


Imaging

Helped by outstanding instrument separation, Miyabi’s imaging is neat, precise and very realistic.


Details

Miyabi retrieve tons of detail from all segments of the spectrum. The bass part, while very good in absolute terms for a driver of this price category, almost pales when faced with the special proficiency coming out from mids, vocals and trebles.


Instrument separation

Together with treble, instrument separation is the other area on which Miyabi deliver a quality which can only be found on selected, much higher class (and price) competition.

All voices are spectacularly enucleated from one another, and layered in a way that the auditioner has a very realist sensation of being on the stage, or just in front of it, and can almost “see” the various players, their performance, abilities, and mistakes (!) happening together.

Separation clarity coupled to solid note body similar or better to what Miyabi offers cannot be encountered for my experience until engaging with IEMs the like of Dunu Zen – at +-4 times Miyabi’s budget.


Driveability

Miyabi’s sensitivity is modest so they do call for some non-trivial amping. Nothing excessive, don’t worry, but it’s best not to rely on a mere smartphone in their case.

A piece of good news is however that their impedance is not ultra-low, so there’s a thicker flock of sources, dac-amps and dongles which are able to deliver the power Miyabi requires.


Physicals


Build

Housings are made of solid brass, with the declared intention to deliver a “brass-like”, warm-ish, organic, acoustic timbre.

Their back end is in tortoise-color resin, moulded adopting a japanese tecnique called Takumi. The result is uneven in terms of colouring, resulting in no two units be identical. The resin back-end paired with the brass main chambers make for a quite stylish ensemble. Miyabi is indeed japanese for “elegant, stylish”.


Fit

Fat bullet shapes like Miyabi's are very easy to fit for me.

Stock tips are good in terms of sound results but I found them a tad too soft, which paired with the housings' weight, their shape etc, for whatever reason makes my left driver tend to lose its seal inside my left ear.

After the "usual" lenghty and boring rotation amongst a couple of dozen alternatives I settled on Spinfit CP-145.



Comfort

Very subjective. I personally find them extremely comfortable, like for most if not all bullet shaped housings.


Isolation

No concha shielding due to bullet shape, but their “fat” build contributes positively nonetheless.


Cable

In spite of the effort that I'm sure mr Watanabe put on it, too, I wasn't impressed by the stock cable. After some trials, I settled onto a Dunu DUW-02S which is significantly upgrading the Miyabi in terms of spatial openness, layering and separation.

It's also important to note that not all third party cables I tried onto my Miyabi clicked the same way, and a couple of them even resulted in unstable connectivity (unlike what happens when the same cable is connected to all other MMCX IEMs I have). Mr Watanabe may want to look into this.

Last but probably not least, I understand Ozeid is now bundling their high end cable (M Kanade) with Miyabi. Looking forward into getting one to check a very likely better pairing.



Specifications (declared)

HousingSolid brass housing, complemented with a Takumi-moulded resin back end.
Driver(s)10mm Graphene coated Dynamic Driver woofer + Laminated Ceramic Vertical Support Tweeter (VST2)
ConnectorMMCX
CableIntime "M Sound" 1.2m cable made of OFC wire, with 3.5mm fixed single ended termination.
Sensitivity100 dB/mW
Impedance22 Ω
Frequency Range20-50000Hz
Package and accessories1 set of 3 pairs (S, M, L) silicon SpinFit eartips, and a snap-button leather strap
MSRP at this post timeJPY 20900 (€ 145)

Comparisons


Tanchjim Oxygen ($ 250)​

Miyabi is overall warmer, with an evident accent on midbass compared to Oxygen which is more balanced-neutral, if something with a soft accent on highmids. Miyabi’s brassy timbre and coloration is totally absent on Oxygen, which is mostly transparent.

Instrument separation and microdynamics are in favour of Miyabi everywhere except on crowded midbass passages, where neither – for different causes – is at the industry’s best. Treble rendering is more organic on Miyabi, with special regards to metal instruments – Oxygen on the other hand comes across cleaner if a tad less detailed.


Ikko OH1S ($ 159)​

The first thing one notices about OH1S vs Miyabi is the obviously thinner note weight delivered by the former. OH1S sounds leaner and therefore less expressive if also less colored compared with the more energetic, muscular and “thetral” Miyabi.

OH1S DD is faster but not better resolving compared to Miyabi’s so OH1S’s midbass is less inflated but also evidently less textured and organic. Most of all, instrument separation is all in favor of Miyabi. OH1S also has more invasive highmids which may occasionally sound shoutier compared to the energetic but controlled ones on Miyabi.


Ikko OH10 ($ 199)​

OH10’s sub bass is more elevated but midbass is less compared to Miyabi. Most of all, OH10’s bass is faster and dryer compared to Miyabi’s so it sounds cleaner on one end, but less expressive and textured on the other. Also, even in spite of such higher cleanness, Miyabi’s separation all over the spectrum including the bass is better compared to OH10’s.

OH10’s note weight is also leaner and the timbre is not brassy. Wind instruments and hihats and crashes sound much less vivid compared to Miyabi. Mids are much more recessed and vocals are not even comparable (by design, I would say).


Dunu Zen ($700)​

Zen’s bass is faster compared to Miyabi’s, and more controlled. Instrument separation, though superb on Miyabi, is better on Zen all along the spectrum. Zen’s tonality is warm, but its timbre is quite neutral. Miyabi is warmer, not only due to somewhat fatter midbass but mainly due to heavier note body on the mids and highmids, and its brass-metallic timbre.

High mids are cleaner on Zen but also less energetic and expressive. Miyabi is definitely airier up above. Zen has a better detail retrieval all over the spectrum, although not by the same margin as its higher price tag might suggest.


You may also want to check my analysis of the Intime Sora 2.


Considerations & conclusions

I can’t name many IEMs costing less than $5-600 and delivering an equivalently pleasant mix of highly refined technicalities, organic, lifelike timbre and energetic presentation like Miyabi do. And even less at Miyabi’s sub-200$ price.

To me this is excellent material. I initiated the process to collect cobloggers’ opinions to consider sticking Miyabi on our Wall of Excellence.

The Miyabi sample I reported about in this article is a personal purchase, no contact incurred with Mr Watanabe.

This article was originally published here.
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Alino
Alino
Thank you. Excellent writeup. These are really magnificent for acoustic music and people loving some (not too much, for me) high quality treble.
T
tubbymuc
Thanks for the review! Nice to see a Japanese domestic manufacturer review.
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ThEvil0nE

Headphoneus Supremus
It can and will grow on you!
Pros: Approachable mid focus tuning.
Lush forward vocals.
Cons: Splashy nature of the treble.
Brass show machining from turning.
Note that I am not a technical reviewer or even good at it. I express what I hear and measure by emotion :)

So I pulled the 🔌 on my listing and decided to keep the Miyabi instead. The 24hr burn-in showed it’s potential and it was rather very good. Here’s I discovered too… the stock ear tips can slide down the nozzle, the Miyabi has long nozzles, and will ruin the sound and experience. Swapped it with Normal SednaEarfit which has a longer shaft. The Light version in (S) pairs best here as the Miyabi sounded best when it’s shoved down and deep in the canals, seal and isolation is improved too. Fit is perfect and flushed in the ear, a bullet type that you can comfortably sleep with. It is an iem that caters to the vocal regions with emphasis on the mid-bass than upper-mids. Bass region is there to complement the vocals, gives it body. It’s a well rounded bass in general without bloat. I am not a bass head but here it sufficed. Vocals really is the star of the show here, it is pleasantly forward without being in your face… I like it. What it lacks thou is energy and attack in the treble regions, be warned tho as I like my mids forward, mid-bass to slam and treble regions with energy. The treble on the Miyabi can shimmer but doesn’t sizzle, it’s almost gives me a feeling that it’s somehow diffused and can be a splashy type of treble. This is weird in a very good way as it again complements the presentation of vocals in a very good way, it makes the vocals breathe. Now there is a single ceramic super tweeter in the Miyabi and you can clearly hear it sizzle with minute sparkles, it tickles so to speak lol. So to sum it up, analogously, Intime Miyabi is a beatiful painting using watercolor as medium. It’s sound is very approachable for a being mid forward, it’s well polished. It is vocals oriented that is lush. The bass and treble areas are supporting characters to let the star shine, the vocals. The splashy nature of the treble is the only thing that might be an issue here as it can fall apart with some genres and or recordings. In the end, it is a general keeper and I am keeping it.

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daijobudes
daijobudes
Great Review! Send You a PM

zenki

500+ Head-Fier
Intime Miyabi-凪【アンティーム】 - Floatwing sound in space
Pros: - Superb bass
- Excellent mids
- Treble is crisp and detailed
- Soundstage
- Imaging
Cons: - Fit issues
TL;DR
What a nice surprise.

Package
IEM, Spinfit tips, MMCX cable, cable clip, pouch? (Can't really remember)

Build
Plastic resin + metal hybrid (brass). About same size as Nagi.

Cable
Good looking + quality cable and it actually works, unlike last time.

First thought/What to expect
After Nagi, not much expectations really. (Damn was I ever wrong!)

SOUND
Bass
Quantity may be just a tiny weenie above the desired level but it's not a biggie. Still ok and acceptable. It's not boomy or bloaty. Nope. The quality on the other hand is superb. It rumbles, thumps, goes deep. Mezzanine's Angel goes deep and thumps like no other. I thought something hit my throat when it kicks. Oh, have I mention that the bass is speedy too? It's as fast if not faster than my relic Klipsch speaker. Yes, you've heard that right, actual 2.1 speakers.

Mids
Let me start it off, this is definitely one of star of the show. The vocals... I don't know what they did with it but “good” is an understatement. The vocals are sublime. Vocals details that haven't heard before comes alive. Sounds crazy right? Vocal details...I never thought there are such thing as vocal details. It's probably somewhat connected to the separation. And of course there are no issues such peaky, harshness etc2. It is also clear and clean. Instruments such as strings also shines.

Treble
Hmm what should I say here? The treble is actually good by any means. It doesn't lack energy, it has details, sparkle etc2. It also doesn't have any issues such as sibilant, peaky etc2. Pretty sure it's an upgrade from the previous iteration. It's just that the 'wow' factor is overshadowed by the other regions.


Techs
This set is very clean, as in sound quality. It's that kind of tidiness that everything just falls in place nicely. This applies to the whole range, not just the mids or vocals. Never heard something so clean before.

Imaging
Now, back to business. Wanna hear floating strings? Not enough? How about flowing sounds in space? Still not enough? Then have a taste of 360 sound. Sounds that appear horizontal becomes either horizontal behind the ear or horizontal in front depending on the track. Crazy right? Yep. Welcome to spatial imaging, the main star of the show. It's truly noticeable in tracks such as MZ23. There are probably other sounds that I haven't explored such as popping out bass drums.

Sound stage
There's actually a quirk with the soundstage but that can come later. The soundstage itself is wide or actually very wide. The height is also very tall. The sound can actually go over your head height. Ridiculous.
Now for the depth... it is tricky. Why? Due to spatial imaging. Forget your typical soundstage. The shape can either be rectangular shape or spherical. Yep you heard that right.
At first I thought it's a typical rectangular shape but it may no be so, because you can be inside the soundstage. (Awesome). It's also possible that the rectangular is inside the sphere or vice versa. Unbelievable.

Itsy Bitsy Tips
Stock tips rules.

FR
Later or not.

Comparison
vs Nagi.
Nagi's bass quantity is just right the right amount. In terms of bass quality, Miyabi rules by a fair margin. For mids, as good as Nagi is, it just doesn't hold a candle to Miyabi. It's that significant. For treble, Miyabi a bit better? Don't need to mention the rest.

vs. EST50. EST50 probably have a slight edge in width and height of soundstage? But really it's tiny. EST50 uses EST drivers but I hear more details in Miyabi.

Closing thought
Well I said to myself not to get another Intime and guess what, I have been well rewarded. Could this IEM be a mini M9, if not an M9 killer at a fraction of the price? Can't tell. What I can tell is once you hear 360 sound, there's no going back.

Verdict
If I rate Nagi 11~12/10 before, Miyabi's at least 15/10.

P.S 凪 終わり.Hello Miyabi
Alino
Alino
Thank you for the review. This earphone is really great. Out of the box of a pair I have had used from Japan, the right MMCX was working on and off. Thanks audiophile gods, I had a fine old Dunu multi plug cable that connects flawlessly with this Miyabi Intime's MMCX.
Z
zenki
That was the same issue I got with nagi before (but mine's the left one?).
3rd party cable to the rescue.
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Alino
Alino
I'd reccomend you Dunu DUW - 02. Fits great and sounds great too with Miyabi Intime.
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