About five months ago, I’ve published my review of the original NF ACOUS NM25 monitoring IEMs. Based on a single DD unit and aimed towards enthusiast and professional musicians, NM25 exhibited stellar overall audio performance, thanks to thorough factory tuning. Its build quality and fit comfort didn’t disappoint either. As much as a love single DD IEMs, NM25 have managed to tick all boxes and deliver on all of the nuances that make such type of IEMs universally perfect.

Almost half a year later, NF ACOUS is releasing very limited version of NM25 IEMs – Ossuary Silver Edition. This is accomplished in collaboartion with the independent silver crafting studio (Ossuary), where the technical perfomance left untouched but the exterior is redesigned – faceplates are thoroughy handcrafted from a solid 925 silver blocks, beautifuly stylized, intorducing specific theme and reflecting the character. Silver edition design style definitely resembles the precision, clarity and distinctivity in sound, perfect for rock and metal genres that NM25 are capable of. And the new look is georgeous! Can’t recall any other so bold-looking piece of art in IEMs for the past decade. I’ve already experienced the moment of astonishment of my teenage daughter when she saw it for the first time – having some attraction to black color, heavy bands and the corresponding subculture, she couldn’t take her eyes of these IEMs and immidiately wanted it in her possesion. So, not only the audio quality, but the style involved, makes NM25 Ossuary Silver Edition to be perceived as a piece of art for own collection.

While technical specs and the impression about the sound can be found in my review of the original NM25 IEMs, I wanted to share the new looks that I’ve managed to capture during the recent photo session:

Original photos from NF ACOUS:

Hope you’ve enjoyed the new style.

NF ACOUS NM25 Ossuary Edition would be launched on 20th of April, 2026. It would be available as NM25 “Ossuary Silver Edition” separate product page at NF ACOUS store: LINK

First batch would be limited to 50pcs only. Catch up if you want to have this piece or art in your collection!

The best inspiration for me in writing this article about Hidizs’ new MP145 Pro IEMs is that finally, I can clearly depict facts to support the statement that Hidizs, as a company, listens to its auditory and approaches the new products with the feedback in mind. MP145 Pro is the derivative of the original (og) MP145 magnetic planar IEMs that were and still stay quite rare on the market. The pros of this technology is obvious – agile diaphragm with faster response time, more precision due to even flex driven from both sides and naturally more air pushed with the larger diaphragm area. Such IEMs produce highly resolving, thick sound with outstanding instrument / voice separation.

Original MP145, released back in 2023, are excellent planar IEMs for the price, with just a few complaints mentioned by the owners: slightly prone to hiss/sibilants (skewed towards upper mids) and not that ergonomically perfect for everyone. Both issues were addressed in MP145 Pro. But even more…

This is the comparison of MP145 V/S MP145 PRO specs:

FR curve closer:

Main structural changes:

• 1T fully symmetrical magnetic circuit (+40% magnetic flux for enhanced clarity, stable magnetic field, and greater driver efficiency)
• 14.5mm ultra-precision nano-grade planar diaphragm (+30% more copper & wire density for better detail, faster response, and a wider dynamic sound)

Changes in sound:

Sound Signature: transparent, more controlled bass, a reference-grade midrange with reduced coloration, and exceptional treble extension for a more expansive soundstage.

The main changes in sound are the results of the final tuning with more even response distribution in upper mids/treble, slight elevation in bass region and some heavy changes in treble. Whether it is for good or worse – we shall see in the sound comparison section.

What’s in the box:

Hidizs did not disappoint with the bundle contents, as always. Here, in a small but sturdy box you’d find:

• IEMs
• 24 pairs !!!! Carl!!! of silicone ear tips (3 x vocal, 3 x bass, 3 x balanced, 3 x anemone)
• 3 pairs of sound filters (rose gold – balanced, silver – high freq, red – low freq, 2 pairs in a separate storage case and 1 pair applied to IEMs)
• large storage case for IEMs
• audio cable
• SE 3.5mm plug
• balanced Pentaconn 4.4mm plug
• some papers

I’ve also got WDC badge along with the bundle which reminds that Hidizs actively collaborates with WDC organization for whale and dolphins preservation program. Learn more about it here:

The first and the most crucial update in MP145 Pro, for me, personally, is the change in audio cable and plugs provided. I’ve been communicating with Hidizs about such option since the release of the og version which I thought lacked the connection versatility out of the box. Such product is an investment that builds joy for their fans for a long period of time and people want to have everything packed together to get the most satisfaction from their purchase. Why would I want to search for third-party balanced or SE cable options if I already made a vote for Hidizs and believe that their equipment worth it… I wanted all components to be provided and tested by Hidizs, and included.

Anyway, I am impressed that Hidizs have listened and now we have the possibility to connect to either SE or balanced source straight out of the box and in the most convenient way. Just detach one plug and connect the other one. Great!

The other notable change is the new shape and overall ergonomics deriving from that. Shape is still very complex, based on whale tale inspiring design with lots of CNC time involved.

Here is some great video of how MP145 Pro are made:

But despite that the weight added a couple of grams, IEMs appear smaller or more rounded. The main change that adds to the ergonomics is the prolongued and thinner sound nozzles that allow for more natural and deeper fit. I would say that MP145 Pro would definitely fit more people.

The only question that I have left is the choice of color for the storage case. I don’t understand why black box with either gold, blue or black IEMs contains turquoise case. The only clue is that it should address the color of the ocean. If so – that’s fine,, there is a logic, at least.

The sound:

I’ve tested MP145 Pro and the og MP145 with Hidizs AP80 PRO MAX DAP (balanced output + balanced ear tips + balanced filters)

First of all, the best part that stay the same for MP145 Pro and it predecessor is the ability to drive those IEMs with low/mid power portable sources. Not a smartphone, of course, but the DAPs with >80mW power like AP80 Pro and above do a great job when set to HIGH gain. Other planar IEMs that I posses are more power-hungry and require >200mW and more to be driven this well. Hidizs gone to low impedance / high sensitivity combination for planars which is an achievement by itself.

Secondly, all the best virtues of the sound of this technology are here: excellent dynamics, layering and intstrument separation, high resolving potential and lots of texturing, especially in mids. Thick mids and overall warm timbre is usually defining and revealing this tech, which is also true for MP145 Pro.

I do like how Hidizs has retuned treble part. It is not that prone to sibilants anymore as it was in og version with low quality recordings and some bright tracks at higher volume. Now, it sounds less aggressive, still maintaining good clarity, presence and extension. Feels more balanced in the sound picture.

Mid bass has the least changes – slappy, fast, dynamic and tight, while the lower bass has been slightly brought forward and the presence is now larger, to my ears. The original MP145 was pretty warm already, due to the elevated bass exposure, but MP145 Pro is another step forward towards bassheads. It is not enormous – just larger than expected for planar IEMs with good control and fast decay. Not smudgy.

So, while the nature/timbre/signature of the MP145 Pro and the og version sound stay close, some obvious changes were made, most notable on refined, less edgy treble and slightly amplified bass. My verdict is that those changes are for good, since IEMs sound wider and smoother in overall, exposing planar advantages and keeping the rest of the prime characteristics untouched.

I also like the synergy of AP80 PRO MAX & MP145 PRO pair. Having more powerful balanced output with 4.4mm plug allows AP80 PRO MAX to reveal planar IEMs potential sonically, with more robust and secure physical connection between the two. Along with more drivability, balanced port also eliminates more noise on the background, slightly widens stereo panorama and separates channels better. The amount of output power is enough even at SE 3.5mm plug, but feels like there is more room ahead on balanced output that positively affects the dynamic range in overall.

Conclusion:

My collection of planar magnetic IEMs grows. While the choice is still quite limited, rare products that are available shape this segment and deliver impressive results. It is obvious that Hidizs is concerning this technology as the cutting edge and investing its time and efforts to bring each single products in this niche close to the entire excellence. This is a flagship model with all positive outcomes of such treatment. Furthermore, this is the 2nd gen release, all rough edges indicated by the auditory are now polished. With MP145 Pro release Hidizs literally declares that feedback matters and that their community response shapes the future. As to the product itself – MP145 Pro IEMs have matured technically, ergonomically, in connectivity and, what is the most important, in its refined, more delicate sound.

MP145 Pro are planned to be released at Kickstarter on March 5th, 2026, 10:30AM EST. Prices are planned as follows:

Limited Super Early Bird

• MP145 PRO: $159.00 (Only 300 Units)
• MP145 PRO + AP80 PRO MAX: $338.00 (Kindly share the combo if you think it’s worth to get.)

Early Bird

• MP145 PRO: $169.00

Limited Special Edition

• Titianium Alloy Special Edition: $299.00 (Only 299 Units Worldwide)

Link to the MP145 Pro official page: LINK

Click NOTIFY ME AT LAUNCH to receive the news when MP145 Pro would become available at Kickstarter

Additional link to Hidizs and WDC social media:

Hidizs:
FB: https://www.facebook.com/hidizs/
Ins: https://www.instagram.com/hidizs/
X: https://x.com/Hidizs
Tiktok: https://www.tiktok.com/@hidizs.official

WDC North America
Whale and Dolphin Conservation (WDC)：https://us.whales.org/about/

Facebook: Whale and Dolphin Conservation
https://www.facebook.com/uswhalesorg/

Instagram: whales_org
https://www.instagram.com/whales_org/

Twitter / X: whales_org
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Tiktok: whales_org
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Around four years ago I have encountered NF Audio brand for the first time and put my hands on their lower segment NM2+ single DD IEMs. I was quite impressed with the overall build quality, accurate monitor-like performance and wide sound stage it produced. I’ve rated that model pretty high, especially considering its price. Although, I didn’t dig too much into company profile and its background.

In 2025, after dozens of different IEMs tested, I am coming back to reviewing another NF ACOUS (branding has changed from NF Audio in 2024) model of IEMs – NM25. This is currently a new flagship in PRO series for consumer auditory, priced highest if not to consider custom IEMs that this company offers for the professionals or the demanding end-users. But don’t worry, we are not talking about thousands. MSRP for NM25 is only $199, which makes it a bargain considering all qualities it possess. I would try to clarify and prove this statement further along the text.

First of all, it is the company itself and the background of NF ACOUS that elevates it above other more regular consumer-oriented brands: NF ACOUS has long been dealing with the professional musicians and artists, developing and supplying its models to use it in severe stage environment or/and as monitoring equipment in recording studios. Perhaps, no need to explain how this affects the overall quality imposed on the product, derived from professional use expectations. Here is the list of bands and artists NF ACOUS is already supplying their IEMs to: LINK. Such experience cannot omit bleeding into consumer segment and those signs are noticeable everywhere. More about this later…

Moreover, there were several milestones achieved by the company when they have developed their own BA driver that is used in the most expensive professional-grade custom IEMs along with the drivers from Knowles and Sonion, launched first-for-China electrostatic/BA hybrid IEMs, obtained several VGP awards on different models and even collaborated on stylized IEMs for gamers. What has not changed – the professional market orientation and supply. Custom IEMs with personal STL for further processing to achieve the perfect fit and sound characteristics remain common for NF ACOUS company.

Now, back to NM25 – the new flagship consumer single DD IEMs by NF ACOUS and its declared specs:

• Dimensions: 150 × 132 × 83mm
• Driver: MC2L-100A Dual Magnetic Circuit & Dual-Acoustic Chamber Electronic Tuning Dynamic Driver
• Cable: 0.78mm dual pin 5N Silver Coated OFC
• Sensitivity: 108 dB / mW
• Impedance: 32Ω
• Sound Insulation: 25dB
• Frequency Response: 9-40kHz
• Distortion: < 1%
• Max SPL: 125dB
• Connector: 3.5mm

Among all of the features, wanted to highlight the two, which should be vital for the advanced audio performance: Clutter Trap 2.0 patented technology which is a special physical element of the inner chamber structure that tames the unwanted peaks for smooth sound delivery and the availability of 5 nets and 2 sponges that act as sound dampers (something like an acoustic foam in speakers to calm down sound reflection and back firing).

In the box:

The box itself is capable of making the best first impression: high-quality graphics with embossed elements, contains all technical data, has the counterfeit protection sticker and made of outer thick cover with side opening for the inner main box.

The inner box opens like a book with integrated magnets that hold both sides together. Inside, we have warranty card, IEMs storage bag and 6,35mm adapter on the left and IEMs / audio cable and a set of ear tips on the right. So, the full contents are:

• IEMs
• 0.78mm 2 pin 5N Cable
• User Guide
• Storage bag
• Ear Tips (sizes: MS, S, M, L)
• 3.5-6.35mm Adapter

The design:

The design of NF ACOUS NM25 is another aspect where the attention to details is getting more apparent. NF ACOUS declares aviation grade aluminum with 5-axis CNC production and the additional surface treatment. Most of the surface has rough matt finishing with an eye catching thin polished bezel around the front panel.

The shape is quite complex, with lots of design elements (cutouts for branding, channel indicators, model name, logos on sides even filled with the paint, I bet that this is handmade) that required a lot of the additional CNC machine time to accomplish. This is pretty impressing for the IEMs in such price segment.

Output nozzles are moderately long and covered with aluminum mesh to prevent dust.

One more advantage of NM25 over many other IEMs is resin protective cover around 2pin port for audio cable. This makes the connection sealed, much sturdier and reliable. Pins on the cable end are placed inside the resin housing as well, finalizing the tight and protected fit. 6,35mm to 3,5mm adapter also carries branding, looks good and feels made to serve for a couple of centuries. As to the cable – it is following the design of IEMs, comes with 3.5mm jack protection cover, equipped with aluminum splitter, jack housing and velcro tape.

Another small detail is that all ear tips have some mix of material compound on the inner part that makes it much more convenient to fit on the sound nozzles. Usually, it would take several attempts by an unexperienced user to fit ear tips (made of silicone) on the most of IEMs. But these, that are bundled with NM25, are free of such flaw – fitment can be done in one simple move.

The sound:

First of all – the fit is perfect for me. As it should be for the vast majority of people and such custom-like shape which is the most versatile for everyone. NM25 are neither too big nor too small, as well as the moderately protruding nozzles allow for comfortable placement. Flexible ear guides add to the overall fit reliability and convenience. I could even run and workout wearing NM25 but I am afraid that the aluminum shells with compensation openings would not last long in such scenarios.

In general, NM25 sound tend to colder type of sound where upper mids and treble have extra resolution and extension while lower mids and lows are well developed but slightly more congested. This is not bad at all. The majority of single DD IEMs tend to dark and warm signature to compensate the limitations of DD driver in treble reproduction and poor overall legibility.

Large amount of instruments and fast music genres are weak sides of such type of IEMs. As for NM25 – it is unexpectedly good in both aspects while still doing a good job on mid and low bass. In mids, voices and instruments have this extra clarity due to the influence of highly detailed treble, mid bass has powerful and juicy slap with plenty of volumetric feel, lows stay clearly defined in their boundaries, with adequate texturing and obvious presence. Only the lowest bass is less pronounced and fall off quite quick. Despite extra details and presence, treble or upper mids are not getting distracting or shouty. The excess of extension and tuning is accurately adding to the resolution while keeping high peaks and sibilants under control.

Perhaps, one of the main advantages of NM25, besides its treble and the resulting sound clarity, is the ability to render instruments and voices in the mix separately. Very good separation and handling of each single performer throughout the entire range and great outlining. Everything stays coherent and holds its shape.

Conclusion:

NF ACOUS NM25 is a solid performer and very strong competitor in single DD IEMs segment. Taking into consideration its adequate pricing, excellent build quality, the attention to small details as a legacy deriving from professional-oriented manufacturing, rich box contents, good fit and unexpectedly clear and highly coherent sound – NM25 aiming for the highest nomination. At least from my side. Additionally, less common tuning for single DD with the orientation towards bright signature makes NM25 quite unique and interesting. Best for pairing with a dedicated DAC/DAPs based on AKK chips or with tube amplifiers.

NF ACOUS NM25 available at AMAZON US, AliExpress and a list of distributors.

Official page: LINK

Hidizs is recently being very productive. I’ve had pleasing experience with MS2 PRO and MK12 Turris lately, and here goes MK10 – new single dynamic driver IEMs. (By the way, if you didn’t know yet: Hidizs has revealed highly anticipated new gen AP8o PRO MAX DAP which would launch soon).

Truly speaking, I am a great fan of single DD IEMs since the launch of Tanchjim Oxygen, which were and still stay one of the best of its kind, no matter the budget. It had some design flaws and couldn’t provide the same level of comfort for everyone but the lucky ones were converted forever. Knowing that a single diaphragm, the most simple in nature, is capable of handling all frequencies brilliantly and deliver that much of details was shocking. I still have it in my possession despite the time passed. Hidizs, on their turn, promise as brilliant performance by incorporating modern silicon carbide crystal diaphragm materials, ergonomic design with zinc-alloy shells, thorough T.H2019 tuning and additional add-on filters. Sound section and the conclusion to this review would reveal whether such features and approach are enough for MK10 ArcSonics to become my new personal single DD king.

MK10 specs:

Features:

Tuning (filters + H2019 target):

MK10 would be available in two colors: black and silver, both would have mirror polish finish. And there would be 2 cable options: 3.5mm SE and 4.4mm BL. Remember that you can always use 3.5mm SE -> 4.4mm BL adapter but not vise-versa. Therefore, 3.5mm version would be more versatile for use across different devices. In case if you order 4.4mm BL version and want to use MK10 with 3.5mm SE output on phone, laptop or other equipment – you would have to get another high-quality cable with 3.5mm SE jack and 2-pin 0,78mm IEM connectors.

Box contents are traditionally rich for this brand: you’d get IEMs, high-quality audio cable with protective tip, leather pouch with satisfying magnetic mechanism, 3 pairs of ear tips and 3 pairs of tuning filters in a separate storage. I am still wondering when brands would switch to a single audio cable with exchangeable jacks to supply each IEMs with all types of connectors. Such cables already exist and it would make the package even more premium. But even without it, when I am showing the box and its contents to my colleagues at work (they are not familiar with such stuff) – Hidizs products always get lots of praises for premium look and first tactile encounters. Perfect gift, literally for anyone.

The design:

Impressive. As always. Hidizs, this time, took the inspiration from Iron Man’s armor and resembled it in the face plates of the zinc-alloy shells. Reminds me of his face mask. Perfect mirror polishing makes it shiny and attractive. I’ve got silver version but I bet that dark one would look even more gorgeous. The flip side, though, is that it also attracts all fingerprints…

Shells are not unibody, consisting of two parts with thin and accurate gap. Shells also enclose couple of compensational openings, moderately protruding nozzles that end up with the add-on tuning filters, embedded 2-pin 0.78mm ports and R/L channel indicators. Each of the 3 pairs of tuning filters has an color indicator ring on the threaded side that corresponds to red (warm mids), silver (crispy treble), black (rich bass).

In terms of ergonomics, MK10 are designed to fit the majority. No sharp edges or fancy stuff, ear guides on cable, moderately long nozzles. Weight is 12g per ear. Definitely much better than the original Oxygen with its less ergonomic form and, especially, very short nozzles that had given a lot of troubles to their owners. I still wouldn’t recommend to use MK10 during workouts – no IP protection and not defined reaction of zinc-alloy and sweat in a long-term. Plus, feels a little bit more bulky to me, in comparison to IEMs made of resin or plastic.

The sound:

Testing with Hidizs AP80 DAP & Motorolla RAZR 50 Ultra smartphone.

First of all, with 32Ohms impedance / 115dB sensitivity MK10 are quite easy to drive from any tested source. Tried even with the bare notebook output and the volume level is far too high to withstand. It doesn’t mean that the dynamics is good with such mere source but it is getting too loud, at least. Second, common to all high-quality IEMs with fast and responsive diaphragm – it is susceptible to picking up and deliver all record quality imperfections which in the combination with such sensitivity might also emphasize more ground noise. The better the source and record quality are – the more MK10 potential is disclosed, free of negative nuances.

The difference in the provided sound filters is not overwhelming but obvious. I’ve tried with all of them and stayed on red (warm and pronounced mids) as the most balanced one to my liking. Silver accents sibilants with lower quality recordings on both female and male vocals while black widens bass portion that is already present in full extent, if not more.

Even with the most balanced filter on, MK10 definitely have V-shaped sound representation. Not extreme, but making each composition more engaging and expressive. Vocals don’t get obscured by lows, mid bass or treble but the bass and mid bass definitely play a major role on the stage. Lows sound accurately outlined and blend well into the entire sound picture and their slightly exaggerated amount makes MK10 a good choice for the people hungry for bass. Mid bass has excellent dynamics, with tight hit and proper mix of lows and upper mids. I wouldn’t say that lows sound very resolving, though. More resolution comes from mids and treble. Vocals, string / wind instruments expose microdetails better and demonstrates the possibilities of fast modern dynamic driver membrane. Great separation and layering of instruments across the entire range also depicts from that. Treble portion is accurate as well, not as crisp and detailed in comparison to BA drivers, but sparkling and clear enough to balance other ranges and add to the overall resolution. It is not as cold and clinical, thus the entire sound leans to the warmer side.

In overall: MK10 ArcSonics sound signature tends to stay slightly warm in many genres, except instrumentals, orchestra and female vocals where the amount of upper mids and treble is larger initially. I would say that MK10 are better off staying in this warmth, therefore, some genres like blues, rock, rap, hip hop, etc – are more suitable. Genres with the large amount of instruments in upper mids (metal, orchestra) are pleasantly clear and resolving but might sound a little shouty and cold.

So, did Tanchjim Oxygen get beaten? Not quite. Hidizs MK10 definitely have better ergonomics, features, higher resolution and better performance on lows but it lacks the transparency, airiness and overall delicacy that Oxygen once presented. MK10 sound more masculine and straight-forward, which is good in many ways, whereas Oxygens were less strict and detailed but more musical. The difference is like it was with Moondrop Kanas Pro. I would say that Kanas Pro and MK10 are close in sound. Unfortunately for Oxygen’s, their ergonomics crossed out most of its sound virtues since many couldn’t get it to fit right and get the experience… Hidizs MK10 are free of such design flaws while getting close in sound quality.

Conclusion:

Single DD IEMs are still staying my favorite. Being good representative, Hidizs MK10 proves this point for me once again. I had lot of experience with planars lately, almost shifted forever to those, but single DD’s are really easier to drive, less expensive and less susceptible to the quality of audio source or recording. Despite that, I still recommend to stick to external amps and forget low quality mp3s even with single DD IEMSs like MK10… Imagine what happens to more demanding magnetic-planars when paired with noisy / low power output. As a consequence, MK10, with its ergonomics, quite balanced / polished sound and high sensitivity, have much better chances to accompany me throughout each day.

Hidizs MK10 ArcSonics would be launched on KickStarter on 25th of September. Great chance to join and get it with the significant early bird discount.

Link to MK10 ArcSonics at Hidizs official store: LINK

Here is the link where MK10 would also be available at launch: LINK

Hidizs has already brought us hybrid IEMs built on 1 in-house dynamic and 1 Knowles 33518 BA driver with good price to performance ratio couple of years ago. Today I would review their latest offering – MS2 Pro – which, while sharing the similar 1 DD + 1 BA hybrid formula, is further ahead with its design, materials and technical construction of both drivers. Dynamic driver uses their latest 10.2mm PU+PEEK Composite Diaphragm and the BA is not from Knowles, but Hidizs’ own Silvercore unit (not much known about it yet, apart from it being a part of the IEMs itself). Moreover, as a standard feature for all the latest Hidizs offerings – MS2 Pro IEMs come with the possibility of personal sound tuning with the bundled pneumatic filters. Official description of the product mentions lots of effort invested by Hidizs team into the initial process of factory sound refinement through the design of the shells, choice of materials and endless hours of tweaks in a quiet room (which they have, indeed). Quite good background for the success…

What I can tell for sure – I like MS2 PRO from the first glance and mostly due to its design choices. Sound-wise – look for the impressions below in this article.

The specs:

Some highlighted features:

• 10.2mm Dual-Magnetic Circuit & Dual-Cavity Hybrid Driver
• Powerful Energy Dynamic Driver for Deep Bass
• HIDIZS Silvercore BA High-Frequency Balanced Armature Driver
• Aerospace-Grade PU+PEEK Composite Diaphragm with Nano-Scale DLC Coating
• N52-Grade Internal and External Dual-Magnetic Circuits
• Rhino-Inspired Design
• ZA12 Zinc Alloy Integrated Molding
• Mirror-Finish Shell Design with Leather Panel
• High-Purity Silver-Plated OFC Hybrid Wire Cable
• HIDIZS Pneumatic Sound Tuning Filter
• 111dB Sensitivity | 17Ω Impedance | 109dB Dynamic
• 3.5mm or 4.4mm Cable Optional
• 0.78mm 2-Pin Detachable Connector
• Ergonomics Design with Comfortable Extended Wear
• Ergonomics Liquid Silicone Ear Tips
• Customized Pouch for MS2 PRO
• Target H-2019 Curve & HIDIZS Style Professional Tuning
• Hi-Res Certified

In the box:

Traditionally for Hidizs latest products, MS2 Pro comes in a small black neat box with high-quality prints and full list of specs. The box is wrapped in a transparent layer of plastics which protects it from scratches and dirt.

Inner compartment has couple of layers – soft foam holding IEMs on top and all of the accessories stored at the bottom. The cable (3.5mm or 4.4mm option), soft pouch with magnetic mechanism, 2 sets of ear tips and 3 pair of tuning filters are included.

Design and ergonomics:

The very first that I like about the new IEMs – its design. For me, personally, polished and shiny edges combined with leather is a win. Looks distinctive and fresh. I’ve got black leather version, among the three choices that would be available, the most uniform and strict. But I wouldn’t mind to go with either of those and have more accent on its looks with orange or blue options. All look great. And this additional and functional element on the faceplate, covered with bronze grill, is an accurate and precisely crafted opening for dynamic driver movement compensation really makes IEMs look very unique.

Sound output nozzles don’t protrude too far from the shells but in combination with universally ergonomic form and flexible ear guides on the cable – MS2 Pro fit quiet nice and shouldn’t give any trouble to the vast majority in this respect. I wouldn’t recommend it for workouts since there are openings on the back as well, but activities with no incoming sweat or moisture should be totally fine fit-wise.

Cable is traditionally braided, equipped with aluminum audio jack and splitter housings, bending protection, flexible ear guides, channel indication and standard 2pin, 0,78mm detachable connector with transparent resin housings. Never had an issue with audio cables from Hidizs, but if someone would like to switch to something as thick as the elephant foot – you’re welcome. I bet this connector type would handle

Now, the sound:

Tested with Hidizs AP80 Pro / Motorolla RAZR 50 Ultra and neutral sound filters.

MS2 PRO IEMs are definitely easy to drive, no matter the source. 111dB sensitivity and 17Ohms impedance combination is an easy obstacle even for a smartphone with the bare audio output and no pre-amplification. It would also mean high volume levels, enough for the loud environment and more dynamics with low-powered sources. This is an advantage for the casual listening on the go, but I would prefer more tough load in case if I want the best possible quality when combined with high-powered amplifier at home. My tube amp is driving MS2 Pro mad even at 15% volume with gain set to low.

What i really like in MS2 Pro sound is how well it handles lows together with the energetics of mid bass. There is an apparent V-shaped curve, not very dipped though. Just enough to bring up moderately deep bass which enriches mids and makes the stage wider. And the best part is that the treble, despite being generated by BA driver, is served well for the sound to be complete, but not cold or bright. It really helps mid bass with the dynamics, mids/volcal/strings with resolution but the whole sound doesn’t get clinical or shouty. Neither it is prone to unpleasant sibilants.

My only 2 concerns for the sound of MS2 Pro are the lack of deep overtones in mids that would contribute to warm timbre which I love in Hidizs MP145 or MP143 planar IEMs, for instance. And that MS2 Pro, being easy to drive and equipped with BA unit, are very susceptible to the lower recording quality – all tiny imperfections are picked and delivered right to your ears.

As to the imaginary stage – it is moderately wide and deep, with good amount of instrument and channel separation, their obvious dimensional placement but on slightly congested virtual stage.

In overall, MS2 Pro sound quite neutral in timbre, not cold or warm, with slight tendency towards lows and upper mids (V-shape) and slightly recessed but detailed treble. I did enjoy listening to every music genre, apart from classics which requires more flat tuning to exhibit all instruments more even.

Conclusion:

Personally, I treat Hidizs MS2 Pro as a win concerning the design, materials, initial sound tuning and bundled accessories. I love the appearance and ergonomics as much as I admire its thorough and accurate initial sound tuning. It is a decent performer, especially for everyday use in a combination with regular audio sources like a smartphone or portable USB amp. High volume level, slightly V-shaped AFR, universal for different music genres, sounding quite neutral – good option to go easy on ears all day long. As for the serious music fans or audiophiles – there are some limitations to consider if to be paired with more powerful equipment.

Link to the official Hidizs store: LINK

Availability and pricing:

Launch Date: August 7th, 10:30 AM EST
Available: HIDIZS Official Website & Amazon (US, CA, JP, UK, FR, ES)

On hidizs.net
Limited Flash Deal: $69 (MSRP: $99) – 30% OFF
Launch Promo: $79 (MSRP: $99) – 20% OFF
Purchase Link

On Amazon
US : $75.99 LINK
CA : CA$104.39 LINK
JP : ¥11,339 LINK
UK : £62.99 LINK
FR : €80.99 LINK
ES : €80.99 LINK

Hidizs has recently introduced a new and the most advanced single dynamic driver IEM model that builds upon the strengths of its predecessors and brand experience, while aiming for a higher price segment. This latest release, named MK12 Turris, brings a totally new, extra lightweight, yet powerful, magnesium diaphragm, delivering balanced and precise sound. By the end of this review, we should be able to confirm or challenge this assumption. This release reminds me of a vibe when Hidizs introduced their Mermaid series for the first time, with lots of sound tuning options and ambitious declarations. That series was proven a success, thus, expecting similar from MK12.

Hidizs MK12 Turris Technical Specifications:

• Type: singe dd IEMs
• Dynamic driver: 12mm
• Diaphragm: 91% Pure Magnesium M-Shaped Dome Diaphragm
• Frequency range: 10Hz – 45kHz
• Impedance: 32Ω
• Sensitivity: 111dB
• Distortion: <0.3%
• Cable connectors: 2-pin, 0.78mm
• Audio cables: 3,5mm or 4.4mm, high-purity silver-plated oxygen-free copper

Other Declared Features

The 91% Pure Magnesium diaphragm enhances transient response, accuracy, and frequency range, surpassing traditional aluminum-magnesium and lithium-magnesium membranes.

• The outer shells are one-piece CNC-machined aluminum alloy
• Inspired by the Turritopsis dohrnii jellyfish, the design merges evolutionary resilience with modern acoustic engineering
• Three pneumatic tuning filters allow users to customize sound across nine different styles, catering to highs, balanced tones, and bass preferences
• The MK12 Turris’ lightweight design and precise weight distribution, with each earphone weighing below 10g (excluding cable), ensures a stable and comfortable fit. No extra headphone burden, allowing for long-lasting, burden-free listening pleasure.

Hidizs MK12 Turris is aiming to become a revolutionary addition to the market, offering high-end audio precision at much more affordable cost compared to counterparts that utilize magnesium diaphragms. The combination of customizable tuning filters, ultra-lightweight design and the latest diaphragm technology, promises a lot for severe audio enthusiasts as well as for the casual listeners.

Box and contents:

MK12 Turris arrives in a sleek, minimalist packaging—an understated yet elegant grey rectangular box featuring the brand name, logo, diaphragm description and its picture on the facing side.

Inside, the packaging is divided into three layers:

• A top compartment that holds IEMs
• A middle layer securing eartips
• A bottom section containing the rest of accessories

Box Contents:

Hidizs has ensured a rich selection of accessories, making the MK12 Turris a versatile option straight out of the box:

• MK12 Turris IEMs
• audio cable (3.5mm or 4.4mm based on the purchase option)
• 9 pairs (3 types x 3 sizes) of ear tips
• 3 pairs of audio tuning filters (high, balanced, low frequency)
• pouch bag
• Warranty card
• Short user guide

One of the standout features is the inclusion of the additional sound tuning filters from the factory—something rarely seen in IEM packaging but already quite common for the latest releases from Hidizs. This enhances usability across different scenarios, encouraging anyone to test sound variations and to find the best one for own liking. Rich set of exchangeable ear tips also help a lot to fine tune further and to find the best possible fit.

The included pouch bag is also a welcome accessory, offering some additional practicality. It features stiff magnetic mechanism that secures the possessions.

MK12 Turris Design & Build

The MK12 Turris shells are crafted from CNC-machined aluminum alloy, ensuring precision, durability, and seamless construction. Looks gorgeous, feels very premium. Yes, at the first glance they make some bulky appearance but in fact – each weights less that 10g which ends up in good and comfortable fit.

The top cover features the design that is inspired by Turritopsis dohrnii jellyfish while the sides and the bottom left flat. Fine ground surface details catch reflections beautifully—creating a luxurious aesthetic but not too shiny (thanks to the matt finish). Compensation openings for the dynamic driver are at place, those are not diver-friendly :), but ensure the optimized airflow and acoustic performance. Channel indicator are present. Output nozzles are pretty short, feature inner thread to attach audio filters. 2-pin, 0.78mm cable connectors provide a tight and secure fit, eliminating any free play or rattling of the cable.

Final Thoughts

The MK12 Turris embodies a minimalist yet refined design, with exceptional craftsmanship and premium materials that corresponds to its higher-end positioning. Aluminum alloy and its precise machining contributes to striking appearance, making it very appealing in terms of design. I like it. IEMs has turned to masterpieces in its design and specs long ago, and MK12 is not an exception.

Fit & Comfort:

At first glance, one might assume that the MK12 Turris would feel heavy due to its CNC-machined aluminum alloy shells and slightly bulky appearance. However, this concern quickly diminishes thanks to its custom-type shape, short nozzles and overall ergonomics. MK12 Turris shares a similar profile with other well-fitting models, making it effortless to wear for extended periods. Once in place, the IEMs become almost imperceptible, allowing for long listening sessions without discomfort. Additionally, the noise isolation surpasses the average, effectively blocking out external distractions.

Sound Characteristics of Hidizs MK12 Turris

Tested with Hidizs AP80, Motorola RAZR 50 Ultra. All impressions are described using balanced (rose gold) filters and balanced ear tips.

Lows and Midbass:

One of the standout qualities of the MK12 Turris is its ability to precisely resolve and delicately present the lower frequencies. Unlike bass-heavy IEMs that emphasize low-end dominance, the MK12 Turris takes a balanced approach, ensuring deep bass extension while maintaining exceptional clarity and texture. The bass reaches the lowest registers with defined contours and fast decay, avoiding any interference with mids or treble. This range is not artificially boosted, yet remains consistently present, enriching the overall sound and expanding the perceived stage width. Midbass is tight, punchy, and well-articulated, delivering natural drum reproduction with ample air and impact. Unlike hybrid IEMs, where treble influence can sometimes thin out the lower frequencies, the MK12 Turris adds weight to lower reverbs.

Mids and Vocals:

The midrange takes center stage, offering rich, full-bodied vocals with excellent resolution. Both male and female vocals sound natural, expressive, and slightly warm, with no noticeable imbalance between them. Female vocals benefit from lower treble presence, but thanks to the dynamic driver, there’s no excessive brightness or harshness. Instruments within this range maintain high detail retrieval, reminiscent of well-tuned balanced armature IEMs. Electric guitars and other instruments sound full-bodied, with natural harmonics that enhance realism. Additionally, instrument separation is impressive, contributing to significant stage depth and a layered presentation.

Treble:

The treble is clear and well-balanced with the mids, offering slightly more presence than the lows. While extension, resolution, and micro-dynamics are imressive for a single dynamic driver, they are not as sparkling or vivid as those found in balanced armature models. Most of the treble detail is concentrated in the lower treble, adding transparency and airiness to the sound. This range is precisely controlled, ensuring accuracy without fatigue, making long listening sessions enjoyable. There are no piercing frequencies, excessive sharpness, or sibilance issues, making the MK12 Turris a smooth yet detailed performer.

Soundstage:

The MK12 Turris excels in soundstage presentation, offering one of the most expansive imaging experiences among dynamic driver IEMs. With excellent instrument separation, wide spatial distribution, and deep layering, the MK12 Turris creates a convincing sense of space. The lows and treble contribute to the openness, while vocals remain forward, ensuring a well-balanced and immersive experience.

Overall Sound Signature:

The MK12 Turris can be described as well-balanced, with a slight emphasis on mids and vocals. It exhibits highly textured lows, high clarity treble and natural tonality.

Its versatility makes it suitable for a wide range of genres, including heavy metal and rap, thanks to its accurate bass delivery rather than exaggerated low-end emphasis. However, bass enthusiasts seeking extreme sub-bass dominance may find it more refined than overpowering.

It is getting very close in its sound to the latest planar offerings from Hidizs. Never thought that single DD can be so gathered up in the perception of transient response, speed and overall accuracy. Bleeding here is not a problem and it is getting hard to guess which tech is in your ears at a certain moment.

Conclusion

Three key attributes define the Hidizs MK12 Turris throughout this review: precision, responsiveness and clarity. These qualities extend beyond just the sound, resembling in design and craftsmanship as well. While the MK12 Turris may not rely on flashy aesthetics, its close-to-minimalist approach, flawless construction, and ergonomic shape ensure the mature approach of the developers. This approach carries over into its sound, where each range is delivered with accuracy and in a good balance, resulting in a neutral tonality and expansive soundstage.

In overall, MK12 Turris stands out as a well-rounded and sophisticated dynamic driver IEM, impressing with its sound characteristics, build quality, and balanced tuning. Furthermore, box contents allow for further personal experiments with the sound. For those seeking a great product in single DD category, it would be difficult to find a better match…

Additional information about the launch date and prices:

Kickstarter Launch Date: June 10th, 2024, at 10:30 AM (EST)

Pricing Details:

** MK12 Turris – VIP Exclusive – Limited 200 units only!
Pay a $10 deposit now to secure MK12 Turris for just $109 (MSRP: $199)!
Deposit link: LINK

• The $10 deposit promotion for the MK12 Turris will go live from May 26th to June 9th. Feel free to share on your social media.
  (Note: The deposit link is not yet active—stay tuned for updates!)

How it works:
VIP members pay a $10 deposit to lock in this exclusive price.
On Kickstarter launch day, you’ll receive a secret link via email to complete your purchase.

** Limited Super Early Bird (300 units only!)
MK12 Turris: $129.00 (MSRP: $199.00)
MK12 Turris + S8 Pro Robin: $179.99 (MSRP: $298.00)

** Early Bird
MK12 Turris: $139.00 (MSRP: $199.00)
Limited Gradient-Tint Titanium Alloy Edition – 499pcs worldwide: $229.00 (MSRP: $299.00)

Kickstarter Link: LINK

Great news from Hidizs for everyone who already prefers or only willing to try the might of planar-magnetic IEMs: Hidizs launches the new version of their well-respected masterpiece in this niche (which is MP145) – MP143, codename “Salt” (“in honor of famous humpback whale Salt – a whale that has a long-standing relationship with WDC” – quote from Hidizs website). Similar to it predecessor, MP143 IEMs are inspired and created to support WDC (Whales and marine ecosystem preservation) that is being resembled in product design, eco-friendly packaging materials and what is more important – by the donations to the respective programs since 2023. MP143 are the newest, more affordable planar-magnetic IEMs that is planned to be launched on Kickstarter on 8th of August, 2024 with the Super Early Bird Price of $79.

In my opinion, the declared Early Bird price is a bargain, considering the overall quality and success of MP145 predecessor. With this review I would like to compare both versions and provide my opinion as to the differences and similarities between the two.

Here is the link to the upcoming Kickstarter campaign: LINK

MP143 tech specs:

• 14.3mm 7+7 array N52 magnetic circuit Large Planar Driver
• Nano-level diaphragm
• CNC one-piece aluminum alloy cavity
• 20Hz – 40kHz response range
• Sensitivity 103dB
• Impedance 17Ohms
• Ultra low distortion <0,05%
• Hidizs Pneumatic Sound Tuning Filters
• Target H-2019 Curve & Hidizs Style Professional Tuning
• High-purity OFC twisted pair wire
• Customized Pouch for MP143
• 3.5mm or 4.4mm gold-plated cable plug
• 0.78mm 2-Pin Cable, gold plated connector and copper plating shell
• Hi-Res Certification

As obvious from the product name, the new MP143 IEMs utilizes 14.3mm planar driver instead of 14,5mm of its predecessor. Such change in size is not limited to diaphragm, but also applied to the overall dimensions. MP143 are 20% lighter, 5% thinner in width and 18% shorter in height addressing the claims of some end customers about higher fit comfortability. Yes, MP145 were on the larger side (although, I, personally, didn’t have any issues with that) but MP143 been made smaller, still built upon the large driver and suitable driver chamber. I would say that MP143 are still on the larger side but apparently smaller than MP145. And I would rather leave it as it is, not to sacrifice its sound quality.

The rest looks similar to MP145: H-2019 target curve, response range, HiRes certification, possibility to exchange sound filters, types of connectors and variants of SE and BL plugs.

Design:

Hidizs has developed the new, eco-friendly, plastic-free packaging for MP143. Stiff box with lots of product information, WDC logo and accurate inner arrangement of the components. And yes, the storing pouch with the special springy mechanism is also included. Here what you’d find in the box:

• IEMs
• Storing pouch
• User manual
• Warranty card
• 3,5 or 4.4 SE or BL cable
• 3 pairs of silicone ear tips (balanced)
• 3 pairs of silicone ear tips (treble-oriented)
• 3 pairs of Hidizs pneumatic filters (lows, balanced, treble)

If you’d opt for the limited edition, it would include the additional items: 3,5 and 4,4mm SE and BAL cables, global unique number, budget pin (Hidizs x WDC), postcard collection (Hidizs x WDC)

The design of IEM shells has slightly changed from resembling whale fin to “14 delicate lines resembling waves and baleen plates, with a whale-like contour breaching the water surface, creating a unique and identifiable appearance” – quote from Hidizs website. As already said, the overall dimensions became smaller, but the material is similar – aluminum. Sound nozzles are long enough for a comfortable fit, great choice of reliable 2pin 0,78mm cable connectors. The cable is equipped with ear hooks, built durable and declared to be good enough to disclose full IEM potential.

Fit:

Again, as mentioned, I didn’t experience any problems with MP145 IEMs despite those being on the larger and heavier side. Those are definitely not built for exercising (I wonder who want to exercise in planar IEMs that are built to enjoy the ultimate sound quality), thus, no problems in its intended use. MP143 are smaller and lighter, maintaining similar shape and length of nozzles which make the fit even better.

Sound quality:

Design, declared specs and other virtues are nothing if the sound quality can’t keep on par. Fortunately, this is not the case with Hidizs MP143 IEMs. MP145 were excellent in this respect, with decent sound stage, perfect separation and layering, great dynamics and resolution, thick and rich sound…, just hard to compete. Although, MP143 possess most of the virtues in sound as its more expensive sibling:

Lows:

This is where the most of the changes to MP145 are applied. MP143 IEMs have stronger and wider bass range which influences the rest of the sound more. Not bassy or muddy, but lows are obviously more accented, its presence shifts MP143 to clearly warmer / darker side. Great that despite it larger amount, bass is still well outlined and perfectly controlled. It doesn’t overwhelm, neither shadowing mids or treble. Countours are nicely defined which separates this portion from other ranges, making it distinguishable and precise. But the presence itself makes me perceive this bass as larger and stronger compared to MP145. More suitable for those, who likes tight and controlled lows. Consequently, mid bass has more bass influence but maintains similarly great dynamics and that pleasing tight hit that differs planar IEMs from slower-to-react dynamic diaphragms or thin-sounding armature drivers. Excellent.

Mids:

Slightly less presence and accent comparing to MP145 but similar richness, high amount of texturing and even warmer timbre. Another advantage of a warmer sound is that MP143 are less prone to sibilance even with the specific records that might become unbearable with BA drivers and show some sibilances with MP145 IEMs. Vocals sound natural and rich, although a bit more distant than lows or treble. Kind of U-shaped tuning but not a steep one. Can compare it to old tape rock/metal records when the additonal accents on lows and treble were added as classical tuning for such music genres. Other than that – similar to MP145: clear, accurate and thick sound in this range that makes this IEMs a perfect choice for many genres for long listening sessions.

Treble:

Depends. With some rock ballads or such type of music (Dire Straights, Pink Floyd, etc) – treble might feel very slightly distant or underpowered but as soon as I’ve switched to something like Jean Michel Jarre (Exynos 4, Oxygen 4) – it became clear that treble is perfectly enough. Moreover, it is excellent in terms of thickness, resolution, clarity and precision. Again, thanks to fast but large planar diaphragm that wins over BA in the body of each sound and in clarity over dynamic drivers. Moreover, it allows better separation/layering and creates great perception of each single sound it produces. Thus, all instruments are heard, placements are obvious, no muddiness or mixing/bleeding. If to compare to MP145 – MP143 treble is slightly less present but equally well cooked.

All of my impressions were acquired with balanced sound filters and ear tips. For those who would like more treble or lows – there are other sets included in the package that makes MP143 similarly flexible in the additional sound tuning as MP145.

Soundstage:

No changes in this aspect between the two. I would say that despite decent layering and separation, both IEMs build moderate scene width. The best what I’ve heard were either multi-driver IEMs or open-backs or the stage was artificially increased by the means of wide-sounding DAC/AMP. But with the similar Hidizs AP80Pro DAP – both IEMs are slightly congested.

The result:

Do I like MP143? Yes, indeed. Especially concerning the upcoming campaign, early bird prices and further MSRP decrease options. Several years ago planar IEMs were as rare as unicorns with the cost of a jet wing. Now, with the efforts and investments of Hidizs and other respected brands in this niche – we can finally choose between the various existing options. And MP143 are one of the most affordable IEMs, despite having much in common with its more pricy flagship predecessor, both build quality and sound wise. Would I prefer MP143 over 145? Yes, as long as the preference is towards warmer sound with more accent on lows or the price matters. Otherwise, the flagship stays on its pedestal. Finally, would possess both as great examples of once very rare planar-magnetic IEMs, brought to perfection and crafted with knowledge.

Link to the upcoming Kickstarter campaign: LINK

Hidizs MP143 official page: LINK

Not very common review today since it consists of two interesting units from the same brand – Hidizs. This brand has been quite active and brought intriguing and worthy stuff for the past couple of years. Their latest MP145 planar IEMs made some noise before the launch and early bidders have already started to receive their parcels and supply own very positive impressions.

Glad to see that the feedback on the sample items the reviewers have shared this summer finally turns into pleasing satisfaction of Hidizs customers and supporters and the campaign turned out a success in overall.

This time I’d share my experience and impressions of spending several weeks with Hidizs S9 Pro Plus USB DAC|AMP dongle and the latest SDD IEMs – MS1 Galaxy. And since the devices create a great pair, I’d review those together in one article, starting with the dongle.

First of all, S9 Pro Plus (codename “Martha”) is a successor of the previous versions of S9 lineup: S8 -> S9 -> S9 Pro -> S9 Pro Plus. Currently, Hidizs is pretty strong in such devices and has a long list of dongles: S8, S9 series (3 devices), XO, S3 Pro. Previous S9 dongles were widely reviewed and commonly placed on top among similar products of other brands and S3 Pro even has been mentioned in New York Times as the best budget pick. Back to S9 series…

Personally, I would say that S9 Pro Plus is a direct successor of S9 Pro whereas the original S9 is a standalone product. The main difference is that the original S9 is built on AKK DAC while S9 Pro and the newest Plus versions share similar ESS ES9038EQM DAC chip. Here we can see all the difference:

Despite that architecture of S9 and S9 Pro is different, their design and some features are more similar to each other than between S9 Pro and S9 Pro Plus. Plus version now offers 4.4mm BL & 3.5mm SE ports instead of 2.5 + 3.5 combination, it now features physical buttons, different design layout and additional switching filters. And on top of that there is more than 30% gain in power comparing to the original S9 version.

Full S9 Pro Plus specs:

• Dimensions: 55×25×11mm
• DAC Chip: ESS9038Q2M
• DSD: Native DSD64/128/256/512
• PCM: up to 32bit/768kHz
• Outputs: single-ended 3.5mm and balanced 4.4mm
• Sampling rate indicator: yes
• Shell material: CNC integrated aluminum alloy
• Function buttons: 2
• Switching filter: 7
• USB interface: Type-C
• OS compatibility: Android, Windows, Mac OS, iPad OS, Harmony OS (Please note: a Lightning to Type-C cable with OTG function has to be purchased separately to support iOS)
• Net weight: 17g
• Colors: Black, Sliver, Blue
• Packing list: Type-C to Type-C Cable×1, Type-C to USB-A adapter×1, User manual×1, Warranty card×1

Audio:

Under 32Ω load:

• Frequency Response: 20Hz-40kHz
• Distortion: PO (3.5): 0.0019%, BAL (4.4): 0.0008%
• Signal-to-noise ratio: PO (3.5): 123dB, BAL (4.4): 120dB
• Separation: PO (3.5): 75dB, BAL (4.4): 115dB
• Output power: 138mW+138mW SE 3.5mm, 180mW+180mW BL 4.5mm

What has also changed is the design of the box – it became significantly smaller and features hard case with soft insert now instead of cardboard in previous dongles. Comes with the device itself, one USB type C -> type C cable and the additional USB A -> type C adaptor for older PC or Mac that don’t have type-C on board.

S9 Pro Plus has the dimensions of 55x25x11mm, consists of the aluminum chassis with front and back glass panels. Design is resembling all Hidizs products with its sharp edges put under different angles.

Another heritage is Hidizs logo at front which also acts as RGB LED indicator for sampling rates and different sound filters. Looks beautifully when active but I wouldn’t call it informative. I would prefer slightly more expensive dongle with OLED screen and full information about rates, filters and track quality. Anyway, here is the list of LED colors and their meanings:

Sample rate indication:

• Yellow: DSD 64/128
• Purple: DSD 256/512
• Blue: PCM 176.4/192(kHz)
• Red: PCM 352.8/384(kHz)
• White: PCM 705.6/768(kHz)
• Green: PCM 44.1/48/88.2/96(kHz)

Filter selection (pressing 2 buttons simultaneously during playback):

On the right edge we have 2 physical buttons now that are responsible for 2 functions: Volume and Filter. Pressing one button increases or decreases the volume respectively, while pressing two at once would change filter mentioned above. Each press of 2 buttons scrolls to the next filter and there is a change in LED color to identify which filter is currently active. Changing volume with dongle buttons is quite discrete and sometimes it is better to control volume from a source in order to get some preferrable values in between.

Top edge of the device contains 2 ports: 4.4mm BL Pentaconn type and 3.5mm SE. Since the technical design of S9 Pro Plus claimed to be fully balanced – BL port provides the maximum potential in terms of output power and sound quality. 180mW/channel is pretty high figure that is not expected from such a tiny device. Just for example: the most advanced Hidizs AP80Pro X DAP has 70mW per channel on SE and 190mW per channel on BL outputs which is much lower on SE and only ~5% higher on BL in comparison to S9 Pro Plus dongle. This is despite the fact that AP80 DAP is much larger, has its own LiON battery as power buffer and much more space under the hood for its schematics.

Bottom edge contains type-C USB port which is compatible with PC, MAC, Android and current iPhones with type-C ports. There is also Lightning to type-C adaptor that can be purchased separately to connect to the older iPhone versions. For Windows, there is a dedicated ASIO driver available on Hidizs website. Having such driver on PC is crucial for the best audio experience as it bypasses system mixers, utilizes bit-perfect stream and opens sampling rates up to 32bits/386Khz under driver properties to avoid the additional resampling.

This type-C port also used to upgrade S9 firmware, although I don’t know whether it would be available for public. I have been provided with the firmware upgrade for my early sample that replaced track switch function with volume buttons when dongle is connected to PC to its direct function: volume change. I assume that all final version devices would already come updated. But if interesting: FW change requires PC connection, PID finding and adding to special FW update app plus the FW hex file to push it to the device. Takes about 5-10 seconds to finalize, restart and get back to music.

In respect of the sound I can state that S9 Pro Plus is a huge update to a regular audio output of general Android, iPhone, PC, Mac or tablet; some addition to the previous S9 Pro version and make some subtle difference when compared to AP80 Pro DAP. Any regular phone or PC sounds less powerful, has notably lower mid bass slap, less layering and instrument separation as well as less resolution. S9 Pro Plus adds the clarity and defines the stage better, provides better control throughout all frequency range and is able to drive IEMs and headphones to a better extent. In comparison to S9 Pro, the newer dongle adds slightly in gain, mostly notable at mid bass and can provide the additional preferences when switching between different filters. Filters do behave differently, adding / subtracting from the mid portion and making the sound less / more balanced. In case with AP80 Pro DAP found some difference in resolution (AP80 Pro sounds more crisp) but this is quite subtle. I would say that S9 Pro Plus and AP80 Pro sound on par if certain filters are chosen on S9.

To summarize: I am impressed with the performance of Hidizs S9 Pro Plus USB DAC|AMP in most possible ways. It is small, lightweight, universal for most of the devices, has unexpectedly huge power output and sounds close to AP80 Pro DAP. It is quite and addition to upgrade the sound source in our pockets and can even be used in the desktop setup if larger and more expensive stationary items are not an option. It might been lacking more informative screen or smoother controls but it definitely doesn’t suffer in audio quality.

If Hidizs S9 Pro Plus is interesting to you – here is the trick how to get it with the lowest price possible: the preorder for S9 Pro Plus in Hidizs official online store would start on November 16th, 2023 (9:30AM EST) and would end on Nov 30, 2023 (9:30AM EST). During this period first 100 units would be sold for 69,99USD and the rest for 79,99USD. You can also additionally apply our special 5% discount code: ZMCR5OFF (code would be available from Nov 15, 2023 12:00AM CST). Preorders would start shipping from Dec 5th, 2023.

Now, back to the newest least expensive Hidizs IEMs – MS1-Galaxy.

Similar to S9, MS1 Galaxy are not the first single DD budget-friendly IEMs by Hidizs. There were MS1 Rainbow and Seeds preceding Galaxy and I still honor Seeds as one of the best single DD IEMs with very accurate and delicate sound. Unfortunately, those have been discontinued and had one huge drawback – integrated audio cable. I even had 2 versions of Seeds at once – SE and balanced to switch between the sources. Therefore, Hidizs has the expertise to design and build good budget single DD IEMs.

MS1 Galaxy specs:

– High-Performance Dual Magnetic Circuit Dynamic Driver
– 10.2mm PU+PEEK Composite Diaphragm
– Optional Inline Control & Microphone
– High-Density German Makrolon Resin Shell
– Silver-Plated Oxygen-Free Copper Wire
– 0.78mm 2-Pin Plug
– Ergonomic Liquid Silicone Ear Tips
– Ergonomic Design with Comfortable Extended Wear
– Perfectly Aligned With The H-2019 Target Frequency Response Curve
– 3.5mm Gold-Plated Plug & Durable Metal Shell & Splitter
– Hi-Res Certification

FR Graph:

MS1 Galaxy comes in a small white box with the design and graphics resembling anime culture what makes them a desirable gift for younger generations. My 14 years old daughter spotted it on my shelf and tried to free me from this pair at day one after its arrival. I am not a fan of anime, but still the design is fresh and unique to my liking. Even my wife was starring at the box and IEM shells despite staying far from this hobby.

Box includes IEMs, 3 pairs of silicon tips, audio cable and some papers.

MS-1 Galaxy shells are made of transparent resin which already draws the attention. Front facing plates shine with different colors and remind of diamonds or stars. Cable ports and sound nozzles have golden finish and add to the entire aesthetics.

Chambers, cables and driver combination inside look accurate and neat. Sound output nozzles are covered with aluminum mesh for the additional dust/dirt protection.

Cable looks similarly gorgeous: silver braid in transparent isolator with aluminum housing on gold-plated jack and resin housing on 2pin IEM contacts. Additionally, it has ear guides formed of transparent heatsink material.

Nothing to be worried in terms of fit since the shape is the most universal for the majority of people, nozzles are quite long and ear guides secure IEMs and cable at place. Choice of ear tips is limiter to 3 sizes and only one material but the diameter is common and most of the aftermarket products would fit nicely if needed.

Now, the sound… I’ve tired MS-1 Galaxy with different sources: AP80 Pro DAP, tablet, PC, S9 Pro Plus DAC/AMP and my Android Xiaomi smartphone. In all cases the sound can be described as tending to warm with large bass presence, juicy mid bass, slightly recesses mids and fairly accented treble. Lows and mid bass are the strongest virtues of MS-1 Galaxy. Great presence, good texturing, good control and layering here. Mid bass has good dynamics. Mids are slightly less resolved and slightly pushed back. Male vocal sound pretty rich and natural whereas female vocals might suffer from hisses and sibilance with less capable sources (smartphone, for instance) and low quality tracks. The better the source is, the less this tendency to hiss is pronounced.

Treble, in its turn, is completely enough in presence but lacks in clarity and transparency. In overall, MS-1 Galaxy with its virtues and imperfections in sound still up ahead of many budget IEMs that passed through my hands and builds the impression of good musical IEMs. Perhaps, its warm signature creates this charm which goes smooth and easy on my ears. I would prefer such type of tonality over crisp and cold when it comes to everyday use. Furthermore, its signature fits ESS-based sources well, making the sound softer and more velvet-like while maxing out the resolution which the driver is capable of. But I wouldn’t use it with AKK-based sources or with tubes cause the sounds starts to feel a bit muddy.

In overall, Hidizs MS-1 Galaxy is a good budget IEMs, great for those who like bass and warm tonality and less interesting for analytical or precise listening. It wouldn’t irritate throughout the day, neither with its fit, nor with the harshness in sound. It feels warm, flowing and smooth, like lounge music that plays on background all day long, suitable and pleasing for everyone. Strong contender, with its pros and cons, excellent build quality, universal fit, relaxing sound, at very low price.

Hidizs MS-1 Galaxy already available at Hidizs official online store: LINK

The use of the magnetic planar technology in IEMs is still on the early stage of the development. Rare products, small lineup, weak fan base and lack of the mass market awareness. For now. Although, the technology itself has a lot of potential in addressing known issues with the most popular driver types in terms of the sound quality. Planar drivers are fast, use large-sized membrane, have even response across the whole active area and better controlled from both sides by the magnets. Sonically, it means more resolution, better transient response, better separation, layering and clarity. This is in theory, in comparison to dynamic drivers. Main advantages over armature drivers is its size which results in more body and bass potential of IEMs. Also in theory…

Time has come for Hidizs to stand inline among few other industry-leading brands in their attempt to prove planar driver advantages in overall, as well as their new product superiority. I am talking about MP145 – first planar-based IEMs by Hidizs.

Before we start, it is important to mention that MP145 design was inspired by and created in a partnership with Whale and Dolphin Conservation (WDC) (the leading global charity dedicated to the protection of whales, dolphins, and their ocean homes).

Hidizs MP145 technical specifications and features:

Let’s say that the most interesting part is that MP145 are based on 14.5mm planars + have 3 pairs of additional tuning filters. This seems familiar from hybrid IEM world, but something new for planar IEMs. The declared impedance and sensitivity combination tells us that, in case with MP145, high power output is not a mandatory requirement. Hope that Hidizs AP80 gen.1 would be capable of driving these with 3.5mm power output. Consequently, we have two options of cable to choose from while ordering: 3.5mm SE and 4.4mm BL. My version is 3.5mm SE since I would like to check upon the aforesaid statement about power and sensitivity. Pity that Hidizs is still haven’t incorporated a cable with the exchangeable type audio plug for its IEM products (2.5mm BL, 3.5mm SE and 4.4mm BL).

The packaging, set and design:

In contrary to the latest hybrid Hidizs products, MP145 box is pretty small and what is more interesting that it is made of plastic. There is a cardboard outer cover with prints and hard box made of recyclable materials and designed specially for those IEMs. Perhaps, new box is developed to differentiate this product and to show that is belongs to more expensive class? Anyway, the box does a great job of protecting the internals which consist of foam inserts holding IEMs, 9 pairs of silicone ear tips and one extra box with the cable, set of filters and some papers.

Glad that Hidizs seems accepted such a rich set of accessories common to their latest IEMs. Apart from IEMs you’d get:

• 9 pairs of silicone ear tips (3 pairs x 3 sizes for bass, same for balanced and for treble)
• 3 pairs of tuning filters (1 pair for bass (rose), 1 pair balanced (gold) and 1 pair for treble (silver))
• 3,5mm SE or 4,4mm BL audio cable with protective cap and velcro strap (cable version type chosen during the purchase)
• carrying pouch

Again, want to mention for Hidizs that it would be a great advantage if a cable with the exchangeable plugs would come as a standard in future for all of IEMs. People use different kind of equipment and it is kind of tough to choose which type of plug to order. The more universal it would be – the better is the impression of the product in overall and more frequent would be its usage in real life.

Tuning filters also come in separate tiny transparent plastic storage box and here is one tip: don’t try to pull it apart, you should turn upper or lower part to around 15 degrees first in order to open this box.

Carrying pouch has the new and more convenient type of retaining mechanism (first seen in MS3 IEMs) when you have to squeeze both ends with the fingers to open it. Good.

Now, about the design and materials of MP145 IEMs: first impression when you take it in hands that those are pretty big and heavy. Solid piece of CNC processed aluminum, resembling whale tail in the design of the facing plate, with some openings, compensation hole, 2pin cable connector and pretty long output nozzles. Nozzles are ending up with the thread for tuning filters. Looking inside the opening – there is no protective mesh but I could see some foamy material deep inside which I believe acts as dust protection and damper.

Aluminum mesh is a part of the tuning filter which cuts some frequencies and acts as the additional dust protector as well. The only reason to worry about wearing those during the workouts or under the rain is the opening on the faceplate that would let water inside. Build quality is excellent in overall, no gaps, solid feel.

For the first five minutes I thought that the fit is kind of compromised by the size and weight of MP145 IEMs. Fortunately, got used to them afterwards and lost any disturbing feel. I can’t say that those are the most universal IEMs in terms of fit and I wouldn’t try to have them on during the workouts but quite comfortable for regular walk and totally good for calm listening sessions.

Finally, the sound:

First to mention – it is unexpectedly huge bass for planar IEMs. Usually, planars suffer from underpowered lows due to technology limitations in combination with high demand on power but Hidizs has managed to solve both issues. Lows are well exposed, adding the base, body, thickness and warmth across the entire frequency range. To the extent that MP145 can be labelled tending to dark/warm sound signature. Besides, lows that we have here are perfectly layered to the additional sub-ranges, have quite notable texturing and pretty fast decay. Together it builds a feel of large but very accurate bass with outlined boundaries and no blurring. Mid bass sounds juicy, powerful, tight and fast. All of that on 3.5mm SE from Hidizs AP80 first gen DAP (set to HIGH gain) only capable of 70mW@32Ohm/channel + balanced tuning filters. This is a win, I assume. Prior planar IEMs I dealt with such as Dethonray Tender 1 and 7Hz Timeless, decent as well, were more hungry for power and required more advanced DAP or even tube amp to disclose their potential.

Consequently, the mids have this sweet thickness and body that makes the sound so smooth. Resolution is not overexposed comparing to high-quaity armature drivers since there is more influence of lows on mid section, but the timbre, presence, layering and separation are all excellent what puts MP145 above its armature rivals which sound thinner, colder and more artificial.

Treble have less weight of all the ranges, maintaining the balance and adding to detalization but it is not accented here. In fact, its performance and amount depends of the song, recording and quality but if we take some composition with normal levels, high dynamic range and high quality recording – treble is on the sweet spot between its clarity, amount and transparency, never getting shouty or piercing, nor feeling underpowered. Some further changes of adding\cutting off treble response can be applied using the additional tuning filters (silver – more treble, red – least treble). And yes, MP145 are a bit sibilant-tending but again, this only been observed on some treble-saturated, not-that-good quality records which already tend bright/cold timbre.

What also shines is the separation/layering across the entire range. Each sound has great clarity, each instrument is outlined. Planars definitely win in this respect over hybrids or dynamic drivers which tend to mix or blur the outlines more.

Conclusion:

Magnetic planar-based IEMs are still not that widely spread in comparison to dynamic or armature rivals, which is a fact. Perhaps, 27-40 products in overall offered by the most popular online audio equipment stores. Subtracting some evident crap from this number and we end up with a very small selection to choose from. But even those that are left, having decent sound quality, are known for its complexity in driving ability, required power and some limitations on the lower end. Hidizs MP145 planars are free from those limitations – easily driven over SE output and capable of large bass reproduction. Even if someone can find a minor flaw, MP145 provides the ability to tailor sound further using the additional filters or might be forgiven for stellar overall musical performance, smooth sound and sweet timbre.

Moreover, Hidizs has disclosed the early bird price for MP145 Kickstarter campaign that would launch soon – only $109. This is an absolute bargain since it is the lowest price on the market for planar IEMs with 14.5mm driver and additional tuning filters as innovation in the supplying set. Therefore, I highly recommend to track down the beginning of KS campaing and grabbing a pair on the early bird terms.

Link to MP145 Kickstarter campaign: LINK

Link to product page and subscription to KS campaign launch notification: LINK

It’s been a while since the last review posted on this blog due to extended logistics. Sending items for the review to Ukraine is quite cumbersome lately, thanks God it arrives undamaged. Hidizs has made quite an effort on assuring that their new MS3 IEMs would finally reach in here, even resending the package twice. Anyway, MS3 are with me now and I can acknowledge the audience of this blog with my own impressions.

Last pair of IEMs reviewed by me were quite peculiar and unusual – KZ ZEX with electrostatic driver in its schematics and Dethonray Tender 1 pure planar IEMs. I’ve had enough time to rest from dynamic/armature hybrid combination and Hidizs MS3 would be the first in series after this pause. Most of the time I am using pure 1 dynamic driver IEMs either from Hidizs/Tanchjim or HiBY since it is the most engaging sound for me, especially when driving IEMs with tube amp. Although, armature/dynamic hybrid IEMs have obvious advantages for some genres and in some aspects that build my interest to find out how technically good the new Hidizs product is.

Hidizs MS3 have been released just a month ago and already have generated a positive wave of impressions by the first owners and reviewers. Promising in the declared features, seems that MS3 really have the potential of becoming a great bargain in less expensive niche comparing to its highly ranked MS5 many-driver flagship predecessor. Good formula applied here by Hidizs – consider the buzz around the flagship product, borrow the most important virtues from it and project it on the less expensive product… Let’s see if the new star was born.

Hidizs MS3 IEMs on sale: Official Hidizs store

Hidizs MS3 IEMs on sale: Amazon

Hidizs MS3 IEMs on sale: AliExpress

Here is the declared specs:

Features:

– 10.2mm Dual Magnetic Circuit Dual Cavity Dynamic Driver
– Knowles SWFK-31736 Composite Balanced Armature Driver
– Aviation Aluminum Alloy Integral Molding Shell
– Three Hidizs Pneumatic Tuning Filters
– Oxygen-free Copper Multi-conductor Cable with 192 Ultra-small Wires
– Highly Approaching the H-2019 Target Curve, and HIDIZS Art Styles
– “Shark Fin” 0.78mm/2PIN Cable Plug
– Hidizs Customized Storage Bag
– Hi-Res Certification

Back to the shipping set and build impression before jumping to the sound experience:

As said before, thanks to quite stiff Hidizs box, this package arrived undamaged. Box carries full product information, product image and manufacturer info. Inner compartment consists of three inserts: foam holding IEMs, foam holding all filters and ear tips and the additional box with audio cable and some papers. Truthfully speaking, Hidizs MS3 are one of the best IEMs in terms of set of accessories. 9 pairs of ear tips, 3 pairs of filters, storage bag, cable – can’t imagine what else might have been included to make anyone totally satisfied… Perhaps, IEMs Fortunately, they are also included.

Build quality is great all around. IEMs look and feel perfect, great choice of materials, precise finishing and construction. No gaps between elements, no rattling. Design is quite complex and very neat and beautiful at the same time. Attracting combination of black body with gold edging. Similarly excellent quality of audio cable: unexpectedly thick, consisting of 4 twisted strands, ending with aluminum 3.5SE or 4.4BL plug housing at one side and transparent easy to pull “shark fin design” 0.78 2pin connectors on the other side. This is probably the thickest cable for IEMs I’ve encountered in my reviewing career. Feels durable and makes an impression of being able to last for ages.

Ear tips are all silicone-type but 9 pars divided to 3 sizes and 3 groups of vocal, low and high frequency oriented use. The changes might be subtle depending of its final fit but accompanied by Hidizs special tuning filters that would add more evident changes to the sound. Filters have different types of mesh to cross out / pass some frequencies that would end up in more lows, mіds or treble-tending tonality: silver – more treble, rose – balanced, red – more lows. Here is how Hidizs measured the changes produced by all 3 pairs:

My personal opinion about how effective those filters are: yes, there are audible changes in the sound, especially between red (low) filters + lows-oriented ear tips and silver/rose filters with the respective ear tips. The difference between rose/silver is less obvious due to highly pronounced armature nature in treble/upper mids segment.

The sound:

Consisting of 2 high-quality armature Knowles drivers + single but mighty dynamic driver, MS3 IEMs produce rich and engaging sound. The tonality feels bright which is an outcome of armature driver outstanding capabilities that goes far beyond human perception abilities on treble and some accent placed on upper mids as the consequence. V-shaped tuning is evident, although not distracting since the treble is quite expended, full of nuances and details. On the other side of the range single DD does a good job on mid bass dynamics and presence of lows. The extension of bass is limited but the amount on lows, speed and tightness of mid bass are perfectly enough. Sometimes lows might bleed in and desynchronize with treble and upper mids since it is slower on changes but mostly on such genres as energetic metal/punk rock and only if the quality of the recording/track file is low.

Apart from that, MS3 sound impressive, especially on layering and instrument separation. Every sound is laid out on its shelve, each instrument sounds exposed. Resolution grows with the frequency, treble is the most resolved, upper mids and vocals have great clarity and texturing, whereas the lows are well-exposed but slightly lagging behind in detalization. In overall, MS3 sound great technically. Especially for the slower genres, songs and with high-quality recordings. Musically, it is on the brighter side with excellent overall detalization, layering and mid bass performance but limited on the lowest bass register.

Fit:

MS3 are designed so that it would fit most without any problems. Such shape, pretty long nozzles, over-the-ear hooks and variety of ear tips would allow almost anyone to use it comfortably, even during the active workouts.

Conclusion:

Hidizs MS3 hybrid IEMs posses all the necessary qualities to become a bargain for many audio enthusiasts and even for some demanding audiophiles. Technically MS3 are sounding great – impressive overall resolution and treble extension, great layering and articulation, excellent and tight mid bass. Build quality, feel and especially the possibility of the additional tuning are all exceptional. Musically, MS3 would be great for those who love V-shaped tuning and brighter sound, bass heads would rather stick to some more bass-oriented options. Nevertheless, Hidizs MS3, considering its price, bundle and sound quality, set the bar pretty high for its rivals on the market. Definitely a great option to save some funds and be totally satisfied at the same time. Well done, Hidizs! Anxious to see would be the next product under this brand…

Hidizs MS3 IEMs on sale: Official Hidizs store

Hidizs MS3 IEMs on sale: Amazon

Hidizs MS3 IEMs on sale: AliExpress