For the money that you pay for these headphones they are very impressive. I wasn't expecting much from these but was pleasantly surprised by the cleanliness of the sound that came through! The bass is not the strongest but what can be expected from 8mm- However it is enough that you can feel it in your ear vibrating. These headphones are also LOUD, I have an iPhone 6s and I can only put the volume bar up around 3/4 of the way before my ears start hurting from how loud it is! So I can listen comfortably with the the bar half way.
Overall a very good purchase!