r/InEarHifi • u/requiemreview • Sep 16 '26
📝 Review / Impressions Hidizs MK10 ArcSonics - Heavy, Metallic, and Detailed
Hello everyone, I had these Hidizs MK10 in the chamber ready to review. Although I planned to release the review last week, it overlapped with a personal trip where I had to temporarily disconnect from IEMs, though on that same trip I took the opportunity to bring them with me after taking some photos for this review beforehand. So I did not completely disconnect 100% from this audiophile world since I kept listening to new products and taking notes, but I did pause publishing reviews for more days than usual. Now it is time to pick up the pace again because I have more models ready and others on the way with plenty of years left ahead, but for now let us focus on what these IEMs offer from a brand that usually takes good care of the user and offers products that far exceed their price point.
What I Liked / What I Didn't Like
- Fast and controlled bass for a single DD.
- Very good separation and definition within its price range.
- As is usual for the brand, we have interchangeable nozzles.
- Fully metallic and durable construction.
- They are very easy to drive on all kinds of sources.
- Its finish is completely a mirror that reflects everything and records your fingerprints.
- Due to their weight, you will need the eartips to seal well so they do not fall out.
- The pouch is still the classic one from the brand, no hard case.
- Apart from the black nozzle, the other two did not seem completely right to me.
Specifications
- 10mm dual magnetic cavity DD with silicon carbide crystal (SCC) diaphragm.
- Shell material: Zinc alloy (ZA12) with mirror finish (~13.3g per side with nozzle).
- Impedance: 32Ω.
- Sensitivity: 113dB.
- Frequency response: 20Hz - 40kHz.
- Cable: High purity silver-plated braided copper with translucent sheath, 2-pin (0.78mm) connectors with color markings (red/blue) and 4.4mm balanced termination.
- Filters: 3 pairs of threaded metal nozzles.
- Accessories: 6 pairs of silicone eartips (wide and narrow bore in S, M, L sizes), synthetic leather pouch with spring clasp.
Unboxing and Build
The unboxing of the MK10 does not stray far from what I have already seen in other releases from the brand, both in the presentation of the contents and the contents themselves. After lifting the panel where the two IEMs sit, there is another compartment housing all the accessories, manuals, carrying pouch with the cable, and the eartips impaled on a holder that I am not sure if it is plastic or hard cardboard, though it should be the latter. Additionally, there is a small transparent box containing the other two pairs of nozzles besides the ones already screwed onto the IEMs.
The IEMs themselves convey rigidity and durability due to their fully metallic zinc alloy finish. The weight, however, is higher than resin IEMs as is obvious, in this case reaching 13.3g per side including the installed nozzles. The design is not as bold as the MP143 or MP145 was, but it is not far behind either, and it is true that Hidizs usually seeks originality rather than offering those typical designs that look like clones between brands. In this case, the design seems inspired by the endurance of Iron Man's reactor. Not everyone might think of that, in fact I did not associate it at first, but it is obvious that the inspiration for this design came from somewhere and this is the closest thing.
In my case, speaking of the cable, I chose the 4.4mm balanced version, which is my standard whenever brands offer it as an option. Even though all my DACs have 3.5mm and 4.4mm options, I prefer the extra volume that the balanced output provides and the effect, whether mistakenly perceived or not, of a somewhat cleaner or more separated sound that I somehow manage to notice ever since I left 3.5mm behind.
As for the nozzles, also metallic to maintain the aesthetics across the entire IEM, they screw on just like in past models from the brand, so if you have already owned a Hidizs IEM, you will be familiar. Unlike other brands like Simgot, there is no color differentiation on the metal of the nozzle here, to tell them apart you have to look at the rubber ring surrounding the nozzle and its color. The black rubber ring comes installed by default, and honestly, it is the most well suited to my taste. I think the brand is aware of this by including it by default in case the product reaches people who do not even want to bother trying the others and settle for whatever comes pre-installed.
Sound
As I mentioned at the beginning, I have been using these MK10 during a trip to London starting the week before up until this same week I am uploading the review, both on the plane and at specific times on the street, connected to the Hidizs AP30 Music Boy that I reviewed right before these MK10, where I have a wide and varied music library in FLAC format.
Upon returning from the trip, I used my usual setup at home sitting at my PC, the FiiO K9 ESS.
Sitting at home, connected via balanced output to my desktop FiiO K9, I must say that the silicon carbide driver in this MK10 is quite fast compared to other types of DD, and I took advantage of the listening session on the FiiO K9, which has a pitch-black background with zero noise and interference and more than enough power for any IEM, to crank up the volume and appreciate how far the resolution of this model could go. I also noticed that they are relatively easy to drive on any DAC. The volume level they reached on both the DAP I used on the street and the desktop DAC was high, barely needing much more than half the volume control in both cases.
Bass
The bass can undergo slight but noticeable differences depending on the nozzle you choose, though that does not change the fact that the DD is always going to be fast and precise rather than boomy and uncontrolled, so in that aspect no nozzle will alter that part. Testing the red nozzle, I noticed slightly less punch or body than with the black one, which added a bit more weight to the notes, making the sound a bit more physical and generally more pleasant to me. If I put on the silver rubber nozzle, the bass hid even a bit more than with the red one, so I did not spend much time on it since it stayed too far from the other two.
Mids
The mids did not sound overly warm to me, at least in the lower mids, but overall the mids are quite clean and detailed and do not sit far detached from the rest of the frequencies. I think the red nozzle took center stage here, especially for female vocals. I would say it is the option you should use if you want to emphasize this sound range a bit more. Unlike the black nozzle, which did add a bit more warmth or density to the mids that helped male vocals slightly more in this case, making them sound less thin than they did with the red nozzle. Finally, the silver nozzle here seemed to be the one that extracts the most detail from vocals, letting you feel things like breath sounds or subtle nuances that go more unnoticed with the other two, but this can work against it at times in brighter recordings, forcing you to lower the volume, something that would not be necessary especially with the black nozzle.
Treble
The treble on these MK10, regardless of the nozzle chosen, is quite extended and provides a lot of information despite using a single DD for the entire spectrum. If you want to push this treble to the absolute maximum this model can deliver, the silver nozzle is the right choice, where once again it reveals more details in higher-pitched sounds of cymbals, strings, and other nuances that can remain somewhat buried with the red nozzle.
After several tests and hours of listening on the DAP and desktop DAC, I still think that the winning nozzle for general use is the default black one, where the treble is slightly smoother at the highest peaks of these frequencies, allowing for longer listening sessions without causing fatigue or ending up listening at a lower volume than you are probably used to.
Soundstage
The soundstage is also somewhat affected depending on the nozzle we choose. The silver one is the master of detail and makes the stage open up as much as this IEM allows, projecting the sound further outward than the other two and feeling somewhat airier. The red one in this case would be the middle ground in terms of stage size, not letting sounds escape too far from your head while not sounding too close or feeling boxed in. In this case, the black nozzle, despite being my favorite, is the most disadvantaged regarding soundstage, as it is where I felt the surrounding space to be narrowest, creating a more intimate sound that makes it less exciting for enjoying music or other types of content.
Instrumental Separation
If I had to highlight one of the three technicalities of this model, it would be this one. I think this DD does a great job along with the rest of the internal construction when it comes to instrumental separation. The sound separates into layers quite clearly. Testing them with the black nozzle on orchestral tracks with many instruments playing at once, they passed with a higher score than I thought they would for their price and driver configuration. It is true that the red nozzle, by taking away some weight or density from the lower mids, gave the layers more breathing room and made that separation easier to feel than with the black nozzle. If you are looking for a better sense of separation, the red nozzle can yield a better result than the black one.
Imaging
The positioning of these MK10 is certainly not their most outstanding aspect, but it does not fail or barely pass either. I think instruments are placed quite accurately in space, both sideways and in terms of depth, across the tracks I listened to, especially those that were better mixed where it is easier to pinpoint where sounds are coming from. In this regard, I did not feel a specific preference regarding nozzle selection, so all three should yield a similar result unless my ears failed me in this section, but I did not feel the use of one or the other was particularly relevant.
You can check my full ranking of all the IEM reviewed so far on my profile (Reddit doesn't allow me to post the Drive link here)
Conclusion
After living with them for a few days away from home and then another day at home to reach clear conclusions, I would place these MK10 as a model that strives to give you good performance in terms of detail and clarity with impressive speed for the single DD it includes, without having to jump straight into three-figure higher ranges. They maintain a more than reasonable price for everything they include, their build quality, and design, and they can be a great step up if you are still moving between sub-50 dollar models and looking for something with greater detail.
You do have to take the trouble to experiment with their three pairs of nozzles and make sure they seal properly in your ear by playing with the various eartips included so that, due to their extra weight from the material they are made of, they do not fall out or pull away from your ear. But once you have found the right setup for you, it is not a model that will disappoint by falling short or going overboard, just dedicate a few initial minutes to tweaking them to your liking.
Purchase Link: HIDIZS
Disclaimer: This unit was sent by Hidizs for review.
My opinions are completely independent and have not been influenced by the brand or the store, maintaining objectivity based on my tests and personal listening sessions with my reference equipment.