Construction-wise, it's a quality headphone but without bass... no matter what you do with the equalizer, there's a gap... it's only suitable for music without bass

Very good sound resolution. Amazing placement of the instruments. Incredible bass. Slightly emphasized highs. Very good price to performance ratio. 10 out of 10.

I didn't expect them to be this good
They have a very open soundstage and very good bass at the sweet spot, not too much nor too little. I also use them for DJing and they have very good sound isolation, but for the best I would recommend memory foam tips.
For €23 they are more than worth it, I highly recommend them

I've had them for a year and a half. The cable is excellent and sturdy, their sound is balanced and tested both in gaming and in music.

It has nothing to envy, maybe the highs are a bit harsh but that can be fixed with EQ.
I prefer them over the Logitech G Pro X.

Quite good headphones. The sound, although lacking bass, was of good quality. Unfortunately, after about a year of intensive use, the connectors of the wires on the right driver broke, while the one on the left has poor contact. It's a shame really because they were very convenient for the work I needed them for.

For the money, it's very expensive in Greece, half the price abroad, at half the price I would give it a 5!!! Functionality is flawless!!!

Incredible headphones for everyday use, and for the price. The only problem is that after 3 months the cable needs to be replaced, as the headphones are not making contact, and the sound keeps cutting out.

Don't buy them, when connected to the PC they produce a static sound that is very annoying and after a while your ears start to hurt. I searched on Reddit to see if others have the same issue or if I just got a defective product, and they say that this specific product has a problem because the drivers are very sensitive which is why they produce the static sound when connected to the PC.
1.Edit: as of May 29th the left earphone stopped working, in 7 months of ownership it stopped working. Genuinely don't buy these
2.Edit: as of August 13 the left one doesn't produce the same level of quality nor volume as the right one

Very good sound. I got them thinking they have a microphone, but I wasn't disappointed. The sound is very good for earbuds and the construction is durable. At first, it takes a little to get used to them with the ears, but after that, it's just fine.

Very good headphones, and when I sing I use them in the studio, and on my phone for music, tremendous quality, especially for their price !!!

Clear and powerful sound with good bass. Three stars because one earbud stopped working after 4-5 uses but it may have been defective. Also, they have a short cable and the ear tips smell strongly. However, due to the sound, I would try the more expensive KZ ones.

Update:
I returned them and they were replaced almost immediately. I also ordered the new ZS10 Pro 2 which have 4 buttons for various settings. If you buy them from abroad, they have about the same price as the ZSN.

They play very well, lightweight, high quality, at this price, 5 out of 5.
The fit is important, so take some time to try the silicone tips until you find the size that fits you best. I personally found that the larger size fit me. This is important for proper performance, especially in the low frequencies.

Very good sound. Frequencies are heard that even headphones of double the price cannot reach. Pay attention to the connection of the cables as others have mentioned... Personally, in terms of comfort, they are average for me, but that is very subjective. They are worth their money and more.

I bought them for Monitor voice on a small behringer console.
The difference between them and regular headphones is that they have strong volume (without any additional equipment) and that's why they are suitable for this job.
The only negative is that the cable is short.
They could have been cheaper, I bought them for 33€

For their price, it is a very good set of headphones. The sound is V-shaped, meaning decent bass and treble (subtle sounds in the background), vocals are not the focus. They have a sound that 9/10 people will be satisfied with. 5/5

Very nice sound and beautiful. The cable also seems durable. It is easy to wear them wrong and they bother you after a while, and it is not so convenient if you want to constantly put them on and take them off.

I had them for 6 months and replaced them, but I will give them 5 stars because they were very good while I had them, they didn't break, I just got better ones. The reason? I'm not a fan of high frequencies as presented by these ones, sometimes the sound became a bit harsh to my ears. Take them, but be aware that they require minimal volume because they have very high sensitivity, and the highs are a bit excessive, and if someone is sensitive to high frequencies, they may not appreciate them as much. Otherwise, they are worth their money, but also take a look at the Final Audio E1000

Just take them... very little money for such performance... I use them as in-ear monitors in live shows and believe me, they do their job very well...

Wonderful headphones for casual-semi professional use. It is a pair that you understand its quality. Good sound isolation if applied correctly. Slightly heavier pair and of course missing the modern earbuds technologies. But for this reason, they are IEMs. The sound is warm v-shaped. Slightly higher bass with very well-balanced mids and beautifully tuned highs. In conclusion:
Pros:
- Sound
- Fit
- Design
- Price-quality ratio
- Quality construction
Cons:
- Weight

Recommended for: Casual users. Music lovers on a budget, musicians in their early stages. Enthusiastic audiophiles.

I have had them for 2 months now and the truth is that I have been relatively disappointed with them. The previous ones I had, which cost half the price, the fiio f1, had much better sound, especially in terms of bass, they just didn't last long. At least these ones seem durable (the cable). I am not satisfied with the bass in general, it is quite flat, and overall I would not recommend them since I have reached the point where I prefer to use cheap Panasonic ones that I have because of better bass and overall good sound. In short, they are not recommended, especially for those looking for good bass

I worked with the wireless iem system for the first time professionally in a live performance with a full orchestra, as I am a singer. I would say that I am demanding in what I want to come out to the world and what I want to hear myself. I always snubbed the iem because I play with a monitor and side on the stage.

These specific ones are much superior to other headphones that have double the price and are made by giant companies. My sound engineer did the mix for me. Good insulation and with silicone cushions

Excellent sound quality in a demanding genre of music (death metal). Very good isolation, I use them in a gym where there is loud music and nothing gets through. The only negative is that they don't fit perfectly in the ear and need adjustment from time to time. This is also due to the fact that I move a lot during exercise. Overall, very satisfied.

Unfortunately, I wasn't very satisfied even though they have good and clear sound. I expected something more, especially in terms of bass. Generally, I expected them to have a fuller sound than they actually do, especially with this appearance that makes you expect something better in terms of sound. What other reviews say about them having strong bass is quite far from reality, and even my Panasonic headphones (which are budget headphones) have better bass. I will probably keep them as a second or third pair and buy the Fiio F1 again, which I have never been disappointed with in terms of sound, despite being quite demanding in this area.

I cannot recommend them enough, they have a very balanced sound with strong bass, enough padding to fit any ear, their cable is detachable, and there are endless replacement options with the choice to make them wireless by purchasing a Bluetooth cable. Overall, for both audiophiles and non-audiophiles, this headphone is the best for its price

Perfect soundstage. They have a little more bass and a little more top end, but they are very well made because when you are, let's say, on the bus and you are sitting in the back next to the engine, with good headphones you lose these two, but with these they sound PERFECT! I love them. They are very satisfyingly heavy, meaning you feel like you're holding €200 headphones. Bravo KZ. Perfect for gifts to those who are crazy about music and want a pair of headphones to take with them wherever they go!