the earphones depending on your ear shape which in terms of mine, the headphones do fall out by themselves not constantly but enough to be annoying .

The bass is as described; strong, vibrant, and quite stable. I did notice a decent improvement between these and my previous non-bass-boosting headphones, but I personally believe that it's attributed to a variety of factors, not just the "extra bass" The "extra bass" thing isn't just a sales pitch - these really do have strong bass. I was very impressed. It made my music sound so much more intense and helped me connect emotionally to it more. It isn't overbearing - it just sounds GOOD. Impactful.Overall, very satisfied with the audio, and I believe that for most consumers, the audio quality is more than enough.

The sound quality was very obviously marketed towards the average consumer/basshead, considering that's what the whole point of the earphone is, then I'd say that the sound quality was actually quite decent. It started off very harsh on treble when the volume was above 50% but eventually one they burned in, the sound treble became less harsh and actually quite recessed. The bass is easily the biggest selling point on these, they are quite bassy and give a good umph. The highs are very present but not too overpowering. Mids were decent but overtaken by the bass as you would imagine. The overall sound quality of these were quite decent, a large emphasis on bass but the rest of the sound stayed relatively present. I’m a musician and I play bass. Sound definition is important for me, with a special focus on bass. These do just that. Maybe, as some people say, the highs could be better. But it’s not been a problem for me. In fact, since compression algorithms such as Mp3’s tend to make a mess of higher frequencies, maybe it’s a good thing that these headphones don’t render them too faithfully. I don’t know. In any case, I’ve never noticed a deficiency there personally. First off, my use case is for my cellphone only. I use these with my Google Pixel XL like all earbuds I buy. Which means no EQ tweaking, not much power driving them, just cell phone spec usage. I've tried a variety of sounds with this pair of headphones - my music preferences are a bit swingy so I've tested rap, edm, country, acoustic instruments, pop, indie....etc. The cord is made of some type of plasticy material. I know some people like braided cables, but I have to say how exceptionally durable this cable has been. For 2.5 years these ear buds came with me jammed in the bottom of my very full purse. I use them in bed and often fall asleep with them (which is not safe, don't do this at home kids) so they would crumple under me, including the ear pieces. The cable still looks IMMACULATE. There was zero external sign of wear-and-tear. I sort of "double knot" my ear buds when taking them with me, but they've got a tangle-free design that seriously prevent any damage from occurring. I'm extremely impressed. The actual ear pieces also still look perfect, save a few scratches.

Often compared with Sony MDR-XB50AP

They are a solid pair of buds that don't feel as if they would break easily. I've dropped them many times before from quite high distances where they slam to the ground quite hard, but I didn't notice any difference in sound. Although I did notice a small chip on the outer metal ring on one of the earbuds. Overall the build quality seems relatively decent and could easily last more than a year.

They are VERY loud - about 110dB. As AMAZING as these sound on full blast, please do not listen to them that loudly, especially for long periods of time. You'll be asking for permanent ear damage. If you are looking for cheap IEMs that wont break your bank but at the same time can be your daily driver and sound outstanding, these will be the right fit. If you are looking for critical listening, then maybe its worth looking into more high end IEMs.The first thing to know about this product is that I found the box containing it impossible to open without tearing the cardboard, and the earbuds were jammed into the plastic insert inside, so even if I wanted to return the product, I'm sure it wouldn't be accepted as a return with a torn box. These are fantastic and top notch earbuds in terms of sound quality. These have lovely and amazing bass and sound great for your the price. Looks are subjective but to me the red version looks the best personally I been using and buying these for years. A great feature they have is that they last me a very long time before they stop working the current pair I have are around 3 years old granted the microphone and button stopped working a while ago but the earphones still sound better than my anker soundcore liberty 2 pro. Alas they do have cons :

They come with a soft little carrying pouch with a pull-string closure as well as three pairs of different-sized tips. If you're in the market for a pair of earphones, then the Sony MDR-XB50 might just fit the bill. Worn in-ear, they weigh 8 g and are designed for comfort. The cord feels a little cheap, but it's not too bad. I'm kinda paranoid about crappy cords because I tend to get them tangled up and they end up breaking the earbuds. The actual ear buds are kinda big, as a few people have mentioned. I have medium sized ears and I would say they are pretty big. Great IEMs with punchy and powerful bass, clear mids and okayish highs. The build quality is great and they look awesome (I got the one in red color). How comfortable they are will depend on person to person, but I felt they I could wear them for extended periods of time without any problems. The sound isolation is decent, but its not enough to isolate the noise of a subway train when you are traveling.

For me, they fit really well in my ears. I've used them at the gym, while running, while on the bus, walking to work...etc and they've never fallen out. Other than the mic casing, these are made from quality material. You can feel it, and I was able to see it over the years with these ear buds. The ear pieces are big. I thought this would bother me, but I actually don't mind it. They don't feel heavy when worn and I've never had an issue with them falling out of my ear.