I will be a little strict because it bothers me that I don't see anyone mentioning this complaint, as I knew it before I even bought them from YouTube. The sound is good, but it loses a bit on the high notes. I, who do not have a professional ear, could still notice it. It is a bit annoying, especially if you increase the volume (it is very loud and the issue with the high notes becomes more intense). I later bought the Xiaomi earbuds for around 20 euros to test them, and they were at a good level. The negative thing about these specific earbuds was the opposite, that the sound is a bit muffled on the loud notes (I don't know how else to explain it, lmao), but not bothersome. The Xiaomi earbuds belonged to my brother, while I tried these Sony ones for the first time today. I would recommend the earbuds in comparison, always in comparison to these Sony MDR ones. I haven't tried any other headphones, so I don't have an opinion. Only for these two... EDIT: the headphones on 7/2/2020. Very durable, good bass, nice sound, quite loud, I always have it below half volume. I'll give it an extra star and rate it 4, maybe I was a bit strict... the Xiaomi earbuds are even better

I mainly use them for gaming on the PS4.
They have amazing sound quality with deep bass.

The only negative thing is their shape and comfort, which can be a bit bothersome in the ear, depending on the shape of your ear.
For example, I have no problem with my left ear, but after a while, I feel a slight discomfort in my right ear.

However, in terms of sound, they are perfectly satisfactory.