500+ Head-Fier
DIVINUS OSTIA – great TWS contender
Pros: Great fit, light weight, compact, IPX7 protection, battery life, seamless integration, good sound
Cons: no volume control, no HD codecs on board

As TWS victorious march on mass market continues, even highest audio quality focused individuals (as us) are sometimes turning their heads to see whether wireless technologies are getting closer, or to find the most convenient compromise for a regular use. Large amount of TWS options that are currently available for purchase are always divided in three segments (at least in our heads): utilitarian TWS, musical TWS and wireless buds that would never serve a purpose for an audiophile (like Apple EarPods) due to its shortcomings in physical design and lack of latest high-grade codecs. The rest of the two can draw our attention but with lots of “if”.

Currently, we have came up with the following conditions for each of two types:

Utilitarian TWS: best to be high-quality earbuds with detachable cables (Ourart ACG, etc) accompanied by high-quality Bluetooth modules (like FiiO UTWS3, etc). In this case we are getting the most of audio quality with the latest BT audio codecs, ability to detach and change earbuds, good quality of phone calls, and the last and most important – buds are not creating vacuum and don’t make you feel uncomfortable throughout the day.

Musical TWS: it should be high-quality IEMs with latest BT audio codecs, with excellent fit and ergonomics.

Now, when we have defined TWS types, we can introduce our new review topic and try to define which type it belongs to…


DIVINUS OSTIA (DVT-100) – TWS IEMs from quite new brand that has some essential peculiarities: first, it is from South Korea (R&D and QC are domestic), second – it is based on in-house DD driver and third – it is music-oriented TWS. Here is the link to official product page: LINK and here is the page to read about DIVINUS brand: LINK

OSTIA tech specs:
  • IPX7 (perfectly finished housing protects product from water)
  • Light weight, compact size, total weight 39.1g including charging case
  • Custom designed DV1 driver (6mm DD Driver)
  • Bluetooth 5.0 connection with TWS
  • C-type charging port
  • Wireless charging
  • 20 hours of total usage time, 5 hours playtime per charging
  • Voice assistant
  • Touch control
  • AAC/SBC codec supported
  • In-ear type earphone

Official AFR:


The most interesting parts in OSTIA specs is that it has IPX7 protection and wireless charging built in to its charging cradle. Although, no charging base is included. Furthermore, the absence of HD audio codecs makes us doubt its audio performance which we would describe in the sound quality section.


Packaging and design:

OSTIA comes in pretty small box that contains product graphics and information. Inner part of the box is split into two parts: one holds the cradle with IEMs inside and the other contains two boxes with the accessories. The full box package consists of the following:
  • OSTIA cradle
  • 3 pairs of silicone ear tips
  • USB type C charging cable

Along with this set, we have received a set of memory foam ear tips and a set of sound filters. As we’ve understood, those two are the options and can be purchased separately. We would say that sound filters should actually be a part of the product bundle since those act as a dust protection and significantly normalize sound performance on treble… Absolutely a must for OSTIA TWS.


Both OSTIA cradle and IEMs are very compact in size and lightweight. Perhaps, the smallest cradle so far among all we’ve seen. Everything here is made of plastic with the main design element in a form of polished plate with shiny silver DIVINUS brand logo at the top/facing side. Cradle exterior is equipped with 4-segment LED charging indication, type C charging port and integrated carrying lace. Inner compartment has separate L/R IEM beds with magnetic charging pins.


Magnetic force is enough to keep IEMs at place when cradle is opened and held up side down. Despite its low weight, cradle battery capacity is enough to charge a pair of IEMs 4 times. Considering that IEMs can last for 5 hours per charge, it gives around 20 hours of playtime in total.


OSTIA IEMs shell is made of two perfectly aligned parts. Each channel is equipped with a mic under aluminum grill, channel indication, multi-color status LED, compensational opening, charging contacts and sound output nozzles. As mentioned before, nozzle opening are not protected by any means out of the box and require optional sound filters to be fitted. Shape of the nozzles is regular which makes it possible to use any common after market tips. Facing sides of each channel represent touch control sensors. All commands are listed in English user manual. Here we should state that most of the expected controls are embedded (start/stop, back/forward, pick up/hang up), except the volume. It adds some inconvenience since the volume can only be controlled from a source.



OSTIA IEMs have good ergonomics and excellent universal fit. Nozzles are long enough, tips provided in 3 sizes and the weight is very small. No problems with the fit even during active movements. Moreover, considering that it has IPX7 protection – no worries about sweat or rainy conditions.

In use:

OSTIA cradle and IEMs takes the charge from empty to full for about 2 hours. Can be charged simultaneously. Pairing is initialized when IEMs are taken out from the cradle and there is no known source is available to connect to. Switch off happens when IEMs are placed back to its place. Each channel can be used separately or in pair. This logics works seamlessly, no problems met with Xiaomi smartphones as a source. Although, there is no multipoint connection function which means that IEMs would produce sound from only one source at a time. On the other hand, it would store multiple device in pairing memory for lighting-fast connection to any previous one.


Touch controls and voice assistance work as expected, quite smooth and reactive. The only inconvenience with that might appear when removing and fitting IEMs from you ear – accidental single touch of facing plate might occur which would result in music start/stop or call pick up/hang up.

Mics are doing a good job in phone calls. No bad response from other party during calls in office or home environment and some light noise interruptions outside.

In overall, we like how OSTIA TWS are made, feel and perform in everyday usage scenarios. FW and logics made good, no errors or flaws in the performance, fast and stable connection and seamless IEM swaps.


Sound quality in comparison…:

Due to the brand background and declared product qualities, we were expecting OSTIA to be musical enough to keep on par with IEMs with Bluetooth hooks combination or with musical TWS like TFZ X1, at least. And it appears to be somewhere in between. Bluetooth hooks like FiiO UTWS3 that support AptX codec, have dedicated amp and based on more advanced elements are several steps ahead of OSTIA in terms of sound quality, especially in retrieving textures /depth on lows and clarity / extension on treble. FiiO modules also bring more details and overall resolution over entire range and better dynamics / articulation in mid bass region. OSTIA feels more tending to show it V-shaped nature with excessive accent on treble and bass areas, lacking maturity and naturality on mids. But mind that FiiO UTWS3 were paired with such great examples of DD IEMs as Hidizs MS2, for instance. Such bundle has much higher price and much less convenient in everyday use.


If to compare to TFZ X1 – another musical TWS with very similar specs – OSTIA keeps up very good and has some significant advantages in sound and overall performance. Sound wise, OSTIA is doing a better job on lows – extension is better, bass sounds deeper and more pronounced in overall. Treble is much closer in its performance, but slightly more delicate and less abrupt and straight-forward. Mids are quite similar, shifted back in both cases and emotional due to tendency towards upper mids area.

In overall, our conclusion that the sound quality of OSTIA is quite far from the best wired DD IEMs which we’ve got used to but its performance as TWS for everyday is very good. Sound quality in such scenarios is totally enough and what is the most important – user experience is close to perfect.

One more word about optional sound filters – it is a must for OSTIA IEMs. Treble section gets quite lisping with no filters attached.



The main conclusion for us is the proof that Bluetooth TWS are still a good option for general usage, but yet too young to play on wired audio IEM ground. On the other hand, OSTIA definitely belongs to TWS vanguard with the best user experience due to its stellar functional performance, excellent fit, convenient operations and good sound quality. It has the advantages in sound and logics over some more popular brands even despite being quite new to the market. Almost flawless first attempt, worth of attention for general use even on highly saturated mass-market. Audiophiles pass by, but less sophisticated listener should appreciate.

DIVINUS OSTIA available for purchase here: LINK
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No DD, no DICE
Divinus Ostia: true wireless for the budget audiophile
Pros: Custom-made driver delivers crisp, clear and balanced sound
Excellent feature-to-price ratio
Wireless charging and IPX7 rating
Small, compact and sturdy
Cons: Sound can be bright and slightly brittle without sound filters
Lack of clear pairing instructions
No volume controls means sound levels can be low on some devices
Optional accessories should be included
Full disclosure: Divinus sent me samples of the Ostia for testing in exchange for my honest review. I am not affiliated to the company, and the opinions expressed in this review are entirely my own.

South Korea is renowned for many things in the modern technology world, but dedicated audio products aren’t high on that list. You could argue that’s not exactly true, given South Korean giants like Samsung and LG have entire product lines dedicated to audio, but to be fair those aren’t the first products you think of when it comes to those world-famous brands.

So, when a small South Korean-based startup called Divinus got in touch to tell me about a new true wireless (TWS) IEM called Ostia, which they created with their own custom-designed, professionally-tuned dynamic driver, my curiosity was piqued. When they told me the price ($60), I was intrigued. And by the time I ripped open the yellow DHL packets a few weeks later, I was positively impressed.


In the box

Ostia ships in a small, shrink-wrapped box emblazoned with the product name and likeness on the front. A pull tag on the side exposes a nifty tray that slides open to reveal the storage case and two small boxes, one with a short USB charging cable, the other with spare silicone tips.

Divinus sent me two extra items with my Ostia sample: a pack of TWS foam tips (sold separately for $9), and a pack of six tiny stick-on ‘sound filters’ (sold separately for $5). I’ll cover the add-ons in more detail later, but suffice it to say, I’m not sure if Ostia actually ships with both add-ons included or if you have to buy them separately. It would make sense to have them included – especially the sound filters – but again, more on that later.

Also included is a miniature user guide that wasn’t particularly helpful when it came time to setting up and pairing the IEMs with my phone and MacBook, but does provide a handy reference for what you can do with the touch button controls once you get them working.


First impressions

Physically, the Ostia case and earpieces are very compact, much more so than my recently acquired Sony WF-1000XM4 TWS IEMs, for example. Both the case and earpieces are made from a matte black plastic material that feels quite smooth and sturdy to the touch, and definitely doesn’t betray the ultra-budget price point.

The case is very portable, measuring about five centimetres across, and seems robust enough to take some punishment inside a bag or pocket. I’d recommend keeping the peel-off protector on the case lid if you want to keep it scratch-free, or buy a small pouch for it on the go.

The earpieces themselves are very light, and interestingly both are identical in shape, with only a faint L and R printed on each to differentiate them. This means they can be put back in the case on either side and still charge correctly, though this could also confuse matters when you put them back in your ears.

Comfort isn’t really an issue, and I got a good fit with the default medium silicone eartips pre-installed on the earpieces. Because of their rather oval shape and small dimensions the earpieces are designed to be worn parallel to the ear rather than pointing downwards, as with many other IEMs that ‘fill’ the ear cavity. The tips aren’t the softest I’ve used, and sit flush with the nozzle, so be careful not to press them in too hard or you might end up doing some damage to your inner ear.

I did have one frustrating issue that I’d be remiss not to mention: the initial pairing process. On removing the earpieces, the small LED indicator flashes red and white to show that pairing mode is active, and indeed I did see a flurry of possible devices appear on my phone’s Bluetooth options screen. Initially I had to guess which of the random code-named devices were the Ostias, but eventually OSTIA appeared as an option, and selecting it paired an earpiece. But only one. A few tries at resetting the pairings only succeeded in one or the other earpiece playing through, until I discovered that, once paired, both earpieces needed to be placed back in the case, with the lid closed, and only when removed again would they register as a TWS pair.

Once I learned the ‘trick’ it was easy enough to get the earpieces back into pairing mode, and pair them with various other phones and devices. Ostia don’t support multipoint connections (nor did I expect them to given their price), so keep in mind you’ll need to physically pair them to a device if they’re currently paired to another. Once paired, a reassuring female voice announces ‘connected’ and ‘TWS connected’, letting you know you’re good to go.


Battery life and other features

Divinus claims a battery life of five hours for the earpieces, and a total of 20 hours including the case (which holds three full charges). There’s no fast-charging feature that’s now common with many TWS IEMs, so you’ll need to allow two hours for a full charge from empty, but if like me you place the IEMs back in the case after every use and don’t use them for hours on end, you’ll likely never run out of charge in regular use.

A nifty feature that I didn’t think I’d see in a TWS product at this price point is wireless charging. Simply drop the case onto a wireless charging pad, and the four charging LED lights on the front of the case light up to show that it’s charging (and also to display how much charge remains).

Another feature I find quite handy for the price is an IPX 7 rating, meaning you can comfortably use the Ostia for sweaty workouts, and even in the rain if you have to. The website FAQ cautions against using them in heavy rain or during a shower, though in all likelihood they’ll be fine even then. If you need a lightweight IEM for a heavyweight workout and the standard IPX4 rating of most high-end IEMs won’t do, Ostia should definitely be on your list. They also won’t cost a bomb to replace should they get lost or stolen at the gym.

There’s not much else by way of features here: no noise cancelling, no app, no high-res Bluetooth, no sensors to pause the music, not even volume control. But the buttons on each earpiece are large and responsive, and you can get all the basics done – play, pause, answer calls, skip tracks and invoke the digital assistant on your phone, all by touch. Once paired (yes, about that…), Ostia are basically plug and play, and fairly intuitive too – assuming you’ve used TWS IEMs before, and their most impressive feature is not so much what they do, but how they sound.


Sound impressions

Before I get to the crux of this review, a word on wireless sound quality if I may. If you know me, you’ll know I’m not a huge fan of Bluetooth sound, at least not for serious, critical listening. Or at least that was the case before higher-end Bluetooth protocols like AptX-HD, LDAC and UAT started appearing in mainstream devices. I’m also not a fan of compressed music, and since ALL Bluetooth music is inherently compressed, something has to give.

Thankfully, modern Bluetooth codecs are advanced enough to support fairly high-bitrate compressed music (320kbit MP3 and 256kbit AAC), and since Ostia supports AAC on both Android and iPhone, you can expect very passable source quality, at the very least. Just make sure your device supports AAC, because you don’t want to be stuck using plain vanilla SBC Bluetooth for anything other than background listening.

With all that said, I initially found Ostia’s sound to be quite balanced, with a slight (mid)bass emphasis, smooth mids (with some upper midrange bumping) and a clear albeit slightly peaky treble that tilted a bit too bright for my liking. Initially I was also underwhelmed with the overall weight of the sound, finding it quite airy, and not in a good way.

That’s when I remembered the small pack of sound filters Divinus included in the box. The Divinus website shows a response curve with and without the filters, suggesting a rather drastic damping of the treble when filtered, so I opted to see if this might change the balance for the better, for my preferences anyway. Lo and behold, it did.

A word of caution though: turns out the filters are little more than thin felt stickers, and if you have fat fingers like mine, are not the easiest to apply. I was a bit like Tom Cruise trying to diffuse a bomb in Mission Impossible, except blindfolded with handcuffs, trying to apply the miniscule filters to the miniscule open nozzles, and I admit to losing at least two in my attempts to slide them on evenly. Before you try this at home, best watch this YouTube video, and use the tools they recommend too!

But I digress…


If, like me, you prefer your sound slightly warmer, your bass slightly fuller, and can’t tolerate spritely treble for too long, the sound filters are an essential accessory for Ostia. Even with the sound filters in place, I wasn’t hearing a large amount of sub-bass, but down low the bass was suitably punchy and fairly quick too. Listening to Lorde’s Royals, the intro electronic bass hits were fuller than I probably anticipated them to be, but not as full as I would have liked them to be. Brandi Carlile’s kick drums on The Story were also modestly punchy, but also quite well textured, and didn’t feel too far off from ideal. This is not basshead-level bass by any measure, but it’s enough to satisfy.

Male vocals are fairly neutral, with the midbass bump giving them a little extra volume when called for. Neil Diamond’s chesty delivery in Hello Again, from The Jazz Singer soundtrack, is coarsely emotive, and even the higher-register male vocals on Radical Face’s Welcome Home are rendered realistically.

Pre-sound filters, female vocals were pushed a touch higher than I like them to be, though that’s probably a consequence of some unfiltered treble peaks rather than any midrange abrasiveness. Katie Pruitt’s signature voice was ever so slightly glassy on It’s Always Been You, but warmed right up with the filters in place. Same with Lana Del Rey on some of her Chemtrails Over The Countryclub numbers.

Treble is where the filters seem to have the most effect. The combination of some errant treble peaks – not surprising at this price and from a single dynamic driver – and compressed Bluetooth playback can make for a rather unpleasant treble fiasco. Thankfully Ostia’s treble is actually better than on some more expensive wireless IEMs I’ve tried, even without the filters, but the filters really, really smooth things over without sacrificing too much detail up top.

The string section in Max Richter’s Winter 1, from his recomposed version of Vivaldi’s The Four Seasons, were crisp and sweet, with enough detail to separate the different string sections on stage, but also more one-dimensional than I’m used to hearing them. And the cymbal splashes on Def Leppard’s Love Bites were definitely much more tolerable than they were on first listen, and actually quite enjoyable once the filters were on.

Overall, I’d class Ostia’s tonality as a gentle U, tilted right pre-filters and left post-filters. The latter is definitely my preferred option, but trebleheads and those who prefer their bass more neutral can probably live without the filters for sure.



Divinus made a point of telling me about their custom-designed 6mm dynamic driver, dubbed DV1, which claims to offer ultra-low 0.1% distortion across the audible spectrum. I’m no engineer, but my ears were telling me this was indeed a quality driver I was listening to, without any obvious grit, and a commendably resolving signature.

I have to keep reminding myself that this is a $60 TWS IEM, and for that price there’s a heck of a lot of technology that needs to be packed in to two tiny shells and a case to make them all work. Often it’s a case of good sound being a nice-to-have, but Divinus set out to make sound quality a priority with Ostia, and it shows.

Without getting carried away, Ostia isn’t going to win any technical awards, but at the same time I’ve heard wired IEMs that cost more and sound worse. Stage size, for example, is actually very respectable, with some sounds pushing past the periphery of my ears and hanging just outside my head. It’s not the deepest stage I’ve heard, but it’s not cramped or intimate either.

Imaging is also good, as is instrument and vocal separation. There’s some diffusion going on with vocals – especially on multi-vocal tracks – that maybe don’t get the singers placed dead centre on stage, but aside from that I find the presentation very natural and lifelike, if not quite life-size.

What Ostia lacks, technically, compared to more expensive IEMs, is resolution. That’s not always a bad thing, especially when you want your IEMs to paper over the cracks in poorer recordings, but the flipside is that you’re not going to get the most in-depth and revealing listen with these compared to higher-end offerings. Still, I’m not going to mark them down too heavily because hey, $60, and tonally they’re a very pleasant listen indeed.


Closing thoughts

True wireless IEMs have come a long way from the days where just getting a stereo signal without wires was deemed a miracle in and of itself. Today, some of the best TWS IEMs match their wired price-tier counterparts for sound quality, and beat them hands down for features, portability and convenience. At the same time, Bluetooth technology in both handsets and chipsets is improving, heralding ever better quality for wireless systems as a whole.

While the very best TWS IEMs used to be the preserve of name-brand, big budget companies like Sony, Bose, Bowers & Wilkins and of course the major platform vendors like Samsung and Apple, the technology has matured to the point where smaller companies have the means to create compelling products that can compete on an even footing with the big boys.

Divinus seems to be just such a company, and in Ostia they have a product that ticks a whole bunch of boxes that discerning listeners would want from a set of low-cost, high-value TWS IEMs. They’re well built, nicely packaged, with a rugged waterproof rating and wireless charging. They’re small enough to wear comfortably for hours, and compact enough to carry in a small pocket.

With custom drivers tuned by someone who clearly knows his or her stuff, they present a relaxed tonality that will appeal to those wanting a crisp and clear listen, or alternatively, with the application of some cheap filters, a warmer, smoother listen that suits almost every genre equally.

There’s a reason why Divinus have already sold more than 14,000 units in South Korea alone, so if you’re after a great sounding pair of wireless IEMs for the price of a few coffees with friends, or a set you can confidently give your kids to carry in their bags to school, I’d put Ostia near or at the top of your list.

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500+ Head-Fier
Divinus Ostia: Sacramental TWS Wonder
Pros: - Light and compact TWS earbuds.

- Satisfactory build quality.

- Adequate included accesories inside the packaging box

- Intuitive overall design ergonomics.

- Overall smooth and relaxed sounding for long listening session.

- Balanced sounding which is quite a feat for a TWS earbuds.

- Quality Bass that bassheads will be pleased and put up a smile on their face

- Technicalities are competent enough on this set.

- Water resistant and protection.(at last I can listen to music even in rain or shower)
Cons: - Limited to SBC and AAC codec only.

- No APT-X, No APTX-HD and LDAC support for higher wireless fidelity (yeah, this codec is proprietary)

- Fast-Charging (subjective).

- They should include the sound filter and memory foam tips inside the box.

Hello mates and welcome to my another edition of IEM reviews here in Head-fi, And this time is quite different as I will do a review on a TWS IEM device.


TWS earphone devices are type of wireless earphone that uses the Bluetooth connection for calling and for casual listening. TWS devices are very convenient nowadays as we live in fast-paced lifestyle that demands more flexible time-setting management and more easing access on functionality. But I have this notion before that all TWS couldn't match up their wired one counterpart especially on audio quality and rendering lossless quality tracks (Standard Bluetooth Connection can only process and has transfer rate between 192 -320kbps, and it is indeed a lossy one). It doesn't even enter in my thoughts to purchase a TWS earphone as I am a Hi-fi portable audio enthusiast and collected some of the good quality Wired In Ear Monitors for my listening experience until someone offer me to test out their product and do a review on it.


Even when I received this product, I'm still skeptical on how does it sound like as I lower my expectation due to that I've tested some TWS earbuds and I don't like they were tuned until this TWS earbuds really disprove my lowered expectation, from a doubter into an impressor.

Presenting the OSTIA, The first product offering from DIVINUS, a new audio company based in South Korea which they promise to deliver a matured tuning TWS Earbuds that even an experienced audio enthusiast will be pleased its sound quality. Its retail price is US$69/£50 and its available on their website and some retail e-commerce stores.


DIVINUS OSTIA's driver set-up is a single-proprietary dynamic driver. It was christened as DV1 developed by DIVINUS themselves as they claimed that it provide better dynamics to on frequency range and lesser distortion rate in both pair of this set. Its shell housing has a good quality polycarbonate material with matte-finished texture that ensures a good protection for its complex parts inside. Another thing that this set was rated with IPX7 which means that it has good resistant and protection against water. It has a sensitive touch MFB button on each side of this set for basic command like play, stop, next, back, pause, activate voice assistant and call functionalities. There is also a LED indicator for pairing connection and battery indicator. A small capsule shape polycarbonate black charging dock is included on this set with 4 (four) horizontally-placed LED dots at its base which is quite diminutively compact and light to put it in pocket and can be carried easily as it has a leatherette lace strap to tie it on other things.



The packaging box is a colour black box sleeve with a print of the red OSTIA font and a picture of TWS themselves. The contents inside are in orderly organise manner, and these contents are the TWS Earbuds inside of a charging dock, extra eartips, a very short USB Type-C cable and some paperworks, Divinus is kind enough to include some goodies like an extra memory foam eartips (Small, Medium and Large) and sound filter (3 pairs) which are sold separately.


The size of OSTIA TWS is on medium size scale that it really fits snugly into my ear. External sound from surrounding was totally block as it was isolated well in my lug holes. It is really light as I didn't encounter any discomfort and soreness in the concha are. DIVINUS does really do some research in anatomical differences of ears to provide good fitting on any ear types in every possible means.


Here is the most part of the review and what is tuning of this set. I perceive the sound signature of this one is a balanced, U-shape tuning due to some ample bass boost, linear mids and an slight elevation on treble.


The bass quality is more on the punchy side with immersively impactful, moderate sustaining transients on dynamics and has good reach on depth as you will discernly hear that rumble on its low end of the spectrum, it really adds up a good element on with the sufficient mid-bass texture to more authentic and natural, It has a very miniscule amount on bass bleed as I encounter it on some tracks but it still acceptable. Im really impress on how the bass kick sounds as it is really thudding and got some good pounding and the growl and raspiness of bass guitar especially on bassists that were using a slapping techniques on their tracks.


I can assurely say the quality of mids here are clean, pristine and mellow, the vocals are push a little bit forward due to the added warmth and crisp on it. Both voices of each respective gender are well-rendered in both resolution and clarity. The instruments either they are percussion, wind or rhythm sounds natural and distinctly have good timbre quality on each respective musical implement.


This is indeed has smooth treble characteristic on its frequency range spectrum. It is one of the most balanced treble among the TWS earbuds/IEMs that I've tested as it has a good sense of airiness as it has sufficient extension reach. There is certainly some peaks on upper mids but it doesnt appear to be harsh nor shouty, I didn't encounter any sibilance. I like how crisp and swishing of the hi-hats sounds natural and the crashing of cymbals has a good extension and satisfactory shimmering decay.


The size of soundstage is on above average dimensions with good depth and average height. It has fairly accurate pinpointing of placement of instruments and vocals. The separation has sufficient spacing to be determined on each part of instrumentalists' position.

To sum up my review here, As I stated here before that I viewed TWS earbuds are inferior and cannot deliver a good fidelity that I'm looking for but DIVINUS OSTIA did actually nailed its tuning and prove my doubts on TWS in general are wrong. This IEM definitely managed to deliver a good matured tuning and balanced coherent tonality as DIVINUS promise to their potential customers.





Model: Divinus Ostia
Drivers: Dynamic drivers
Impedance: 16 ohms
Battery capacity: 410 mAh
Charging time (case): 2 hours
Charging time (IEM): 2 hours
Bluetooth version: 5.0
Bluetooth codecs supported: AAC, SBC
Bluetooth profiles supported: A2DP, AVRCP, HFP
Bluetooth range 33 ft (10 m)
Water resistance: IPX7
Weight (case): 39.1 g
Weight (IEM pair): 8.4 g
Dimensions (case): 2.3 x 1.5 x 1.2 in (5.86 x 3.86 x 3.07 cm)
Dimensions (IEM): 1 x 0.87 x 0.55 in (2.65 x 2.2 x 1.4 cm)

Some Tracks Tested: ( * = 16-bit FLAC, ** = 24-bit FLAC, *'* = MQA, '*' = DSD, *'= .WAV)

Alison Krauss -When You Say Nothing At All *
Jade Wiedlin - Blue Kiss**
Led Zeppelin - When The Levee Breaks **
Mountain - Mississippi Queen *
Queen - Killer Queen **
Guns N' Roses - Patience *'*
Eric Clapton - Tears in Heaven '*'
Sergio Mendes- Never Gonna Let You Go '*'
Pearl Jam - Daughter **
Roselia - Hidamari Rhodonite *
Assassin - Fight (To Stop The Tyranny)*
Celtic Frost- Visual Aggression *
New Order - Blue Monday *
The Corrs- What Can I do (unplugged version) *
Jimi Hendrix Experience - Voodoo Child *
The Madness- Buggy Trousers *
Metallica - One **
Mariah Carey- Always Be My Baby *
Destiny's Child - Say My Name *
X-Japan - X *
Mozart - Lacrimosa *
New York Philharmonic Orchestra - Dvorak- Symphony 9 " From the New World." *
Eva Cassidy - Fields of Gold (Sting cover)*
Michael Jackson - Give In To Me *
Exciter - Violence and Force *
Aaron Lewis - Am I The Only One *


I am not affliated to DIVINUS nor receive monetary incentives and financial gains as they provide me a review unit for an exchange of factual and sincere feedback from yours truly.

Once again, I would like to thank Sol Ha of Fun Class for this providing this review, I truly appreciate his/her gesture on giving me a chance to do review on this unit.
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Thats great to know! it looks promising as well base on your inputs! Thanks again.
TWS has their benefits. and i believe the tech will somewhat be on par with their wired counterparts soon. Another yet well done review mate!
If they are planning to release a wired version. They will have a good shot.