So if you're considering to buy this pair of headphones or have already brought it and need a little tweak to the sound to up the excitement, give this review a read. I know it's somewhat lengthy 🙁 but if you've already bought this pair, skip to the last part, that is, bonus.

Sound quality:-
Pretty good. As you might know, Sony is Sony when it comes to sound. The audio is clear and has that calm, balanced profile that I prefer to the bass oriented profiles of BoAt and JBL. If you are a basshead, I don't think these headphones will be your go to. But if you've been using bass heavy headphones, you will feel and instant change in audio quality and the overall beauty of music once you switch to a Sony device. Keep in mind that I'm not a professional audiophile or something. I love listening to quality music and watching movies and these headphones are perfect. I use Apple music and the sound is bliss, idk about Spotify though but I think it will fare equally well. I like bass and these headphones do provide bass, just that they are not overkill and distort the entire sound looking for it. These feel more premium in the sound department. However some people might feel a lack of excitement in their sound out of the box. Worry not, I've added an EQ tweak to fix your problem at the end of this review.

Specs:-
30mm drivers. So not as loud as the 40mm ones BoAt and JBL offer in this price range. But I've felt (personally) the audio quality to be better. Bluetooth 5.2 which is solid. Multipoint connection makes sure that this will not be outdated soon. They've been released in 2023 and will remain in contention for atleast a couple of years. Multipoint has to be turned on in headphones app and I use it to connect the headphones to my Macbook to watch movies and to my android phone, which might be on charging or in another room, to attend calls. The switching is seamless and works well. They don't have touch controls though, so it will take a couple of tries to learn to get the buttons right, especially in a dark room. They have DSEE which is basically a feature to enhance low quality/ compressed audios downloaded from internet. It has to be turned on in the app and is not needed for Spotify or Apple music as they are already best quality music and DSEE takes up additional battery charge. Battery is solid. They were 70% out of the box and after 20 hr playback still had 50% left. So I guess they'll last for atleast 50 hrs like they claim on the box. I don't like charging my devices all the time and I use them for max 5 hrs a day for which they will last close to 2 weeks which is good. No ANC though, it's not a problem for me but if it is for you, don't buy. Mic is good, I've attended calls in the midst of traffic and they were pretty fine.

Comfort:-
I've tried many midrange headphones and these are some of the best in terms of comfort too. Soft earcups that sit compact on my ear. However if they are not positioned properly, they might exert pressure. But on proper positioning, they will give 2 to 2.5 hours playback without any discomfort. After that you will have to take a break. I don't have big ears btw. They are lightweight and have an adjustable headband with cushion. So as far as on ear headphones are concerned, these are comfortable.

Build:-
Plastic but feels durable. Not creaking. The earcups are the types which forms wrinkles, they look durable but I don't know if they will pinch unless I use it for atleast 6 months. Anyway these have replacement earcups available online and in Sony service centers. I have one near my house. I don't think they are sweat resistant so don't use it for workouts. For jogging they will stay in place once positioned compactly, but for running they will slip off ear.

Drawbacks:-
Lack of aux cable. Once you are out of charge, that's that. It says they support fast charging on box, but I haven't tried that so idk. Normally takes 2 hours atleast to charge from 20 to 100. Another drawback is portability. They are not foldable and even though the plastic feels durable, I'd suggest you don't bump them much. While travelling either buy a case or carry them around in the box they come with (don't worry about looking cheap, the box doesn't have anything like specs or other bs written on it. Only thing written is Sony. It's inside the white cover that mentions specs).

Conclusion:-
They offer value for money if you ask me. The sound is premium for a budget segment and not too bass oriented. The headphone app means it will get firmware updates and has some listening modes that actually work, it is not a gimmick. They look and feel premium too. And unlike Anker or ATH, they have service centers all over so if any issue pops up, that's an added boost too. The don't have an in box warranty card but worry not, the moment you connect your device to the headphones app they are registered. Keep the Amazon invoice with you, in the box or download it in pdf form from your orders section.

Bonus:-
If the headphones lack excitement to you out of the box, the headphones app offer some preset EQ. But I will share this tweak I found from reddit. They worked for me so if you don't know how to configure the EQ on your own, try this;
Select manual on EQ in Sony headphones app.
Put 400 to 2.
Put 1k to 4.
Put 2.5k to 7.
Put 6.3k to 7.
Put 16k to 5.
Put clear bass to 2.
Try out this tweak and see if it works for you. This works on some higher end Sony models too. Enjoy your headphones!!!

"I recently purchased the Sony WH-CH520 Bluetooth headphones from Amazon, and I must say, I’m highly impressed. The sound quality is excellent, with clear vocals and deep bass. Bluetooth connectivity is quick and hassle-free. The build quality is okay, not that great, but they are still comfortable to wear for long hours while listening to music or watching videos. The battery backup is also really good. Delivery was super fast (just 1 day) with Amazon Prime, and the EMI option through HDFC credit card was very convenient. A special mention to the delivery person, who was extremely polite and friendly. Overall, a great purchase — totally worth the price!"

Sound quality is good. Battery life is just amazing, i use these 7+ hours everyday and they easily work by the end of the week. And at the end, they still have 30 percent left, so battery life is amazing.
These open towards outside if you wear left and right according to the headphones.
JBL provides better value for money as they are better in bass and still 1000 rupees less than sony. Good headphones but a little bit higher price which is not at all justified.
Headphones are very very light, sometimes feels like low quality but I've grown accustomed to them.

best headphones in the segment, I've been using JBL and boat for years and which are of high bass, whereas this headphone is a balance of everything, giving the best sound quality in the segment without loud bass which is perfect. the mic on this captures great quality sound. wouldn't recommend it for gaming as the audio isn't fast. after using it for hours I do get pain near my ears which is very irritating, comfort for long hours isn't there. Easy to use, doesn't have a lot of controls like other brands. design is okay overall, the puff near the ear doesn't tear like the ones JBL's does.

This has been my lifeline since 3 months now.
I have been listening to music using it. Quality is great. The only this is it is not noise cancelling, so if you're listening to loud music say rap or rock music, everyone around will be able to hear everything playing. Battery life is superb. It's 3-4days. I listen to music 12-14 hours a day so it's very comfortable, doesn't give you any rashes or makes you sweat, unless you're working out. Love the colour. Bluetooth connectivity sometimes goes off when you're running. Great product for the cost better than other companies and looks very clean and nice.

Works great not suitable for someone who likes noise cancellation headphones and it sweats very easily. Sound quality is great and cushions are soft. Battery backup is good, fits perfectly . Great package in this budget.

Amazing product. Long battery life. Great insulation and sound quality.

After the use of 2.5 years, I am writing this review. The Sound quality and the overall noise cancellation was great for Studies and Gaming, The Quality is also great and Design has some flaws but you can bear with it. The weight is also good, The Head-Fitting of this product is very great, but after 2 years, the cushion pads came off, I had to stick it with FeviStick…..

My wife loves them for working out, they do not need to be adjusted as often as ear buds.