good headphones, good build quality, very good product, the only negative is that there is always a feedback white noise even though they don't have a microphone, which is not mentioned anywhere on the product, but anyway UPDATE after about a month of use the left earphone broke and it doesn't sound as loud as the right one, shame for 40€

I don't know why everyone gives it 5 stars. It's good, fits well in the ear, for music or watching a movie it's good BUT.
1. If you wear them for more than 1 hour, your ears start to hurt
2. When you speak, the microphone picks up all the surrounding sounds, in other words, it has no Noise Canceling at all.

First day using them, maybe the best headphones for producing, sound engineering, etc. The headphones do not have strong bass and focus more on sound accuracy. I tried them on a mobile phone and sound card, clearly very clean sound and quite loud at just 112db at maximum. Loud and clear, but if you want bass, don't get these because, as I mentioned earlier, compared to headphones like JBL Tune Flex, they do not have strong bass.

The headphones were purchased for in-ear monitors on stage. At this price, it's hard to find anything better than KZ in general. Truly quality construction, excellent sound for what I need them for. The cable they come with could be a bit better, but that can be changed later. I don't know if I would recommend them for gaming or casual music listening as I don't think that's their purpose.

Quite good headphones, has a very good sound. It has a quite enhanced midrange, not necessarily a bad thing, adjustable with eq and comes with a very clean sound. It also has a very good response in the bass even after amplification it remained clear. For something basic, but quality, the kz is for you. Go for it

They are very good headphones. Nothing like the other in-ear ones on the market. Their cable is reinforced and "clicks" onto a special slot on each earphone. They fit exceptionally well (for me) and the sound quality is incomparable to other headphones (Samsung, Sony, Panasonic, Xiaomi, AKG, etc.). The cable gets tangled when stored - not while listening (after all, no cable gets tangled, even the ones from Samsung that have a special design to prevent tangling). However, they untangle easily and everything they offer outweighs this disadvantage. Besides, if you want to avoid tangling, you are led to Bluetooth, but I cannot compare them in any way to the Knowledge Zenith. Also, you don't hear external sounds, as long as they fit properly. With all the other headphones I mentioned earlier, along with the mp3 sound, you also hear external noises... They are worth their money, offering exceptional sound quality, even in the low price range.

So after a day of use, this is my opinion on the headphones. First of all, their construction is amazing for the price. They have a good weight in the hand and are very comfortable in the ears. The fact that they have ear hooks on their own is also a big plus. Now let's talk about the sound. It's simply wonderful. The bass is noticeable and has detail. All the instruments sound equally good with the same good detail. Compared to the Shure SE215, I honestly prefer the KZ every time. No matter what genre of music I listened to, it was great. Additionally, they have very good isolation when you wear them. In conclusion, if you're looking for a cheap pair of IEMs, this is a very good choice to start with.

Note: I tested them with Memory Foam eartips, although I don't know if it will make a big difference in sound but more in isolation

Είναι πολύ καλή επιλογή σε low budget