These headphones are good for the price; excellent lows and decent enough mids and highs for the price of this set. I needed a new pair of headphones for my computer, I didn't need anything really expensive as I already have a very good speaker system for my computer which I use during the day/night, I needed a pair of headphones so that I wouldn't wake everyone up with my speaker system. I had a couple of options, a Sennheiser HD 595 or 280 pro were some of the more expensive options. But due to me having read an astronomical amount of reviews stating that the lows on those headphones (Sennheiser ones in particular) are pretty lacking, I came across these and thought "hell, I don't need a really expensive pair, just something decent."
As I stated before, these headphones have good bass, decent highs and lows that please me. The build quality is excellent, just as I would expect from a pair of headphones from Sony. The pads on these headphones are quite big and soft, good for people with big heads like me. There is only one con I can think of, these headphones leak a lot of sound! It's not a problem for me but it might be for some.
In conclusion, these headphones are decent! The build quality is excellent! The sound is decent, but I'm not too picky because I'm not using these as my output of sound from my computer. The low are very good and the highs and mids are decent for most music. If you are picky about sound quality and you're planning on using headphones all the time for your music listening (unlike me) you might want to consider a more expensive pair of headphones, such as some Sennheiser's.
Other than that, these headphones are a good pick for the price.