Before these headphones, I had a pair of £50 Sennheisers. They met a rather...destructive end, after being dropped down a flight of concrete stairs. FOr a replacement, all I wanted was something to listen to music and play video games while everyone else in the house was asleep, not for DJing or anything that requires £200 quality.
Compared to the Sennheisers, these headphones hold their own nicely. Very bassy, but with clear vocals. The mid-ranges are a little muffled, but otherwise shockingly good. They also cancel out noise better than my previous headphones and they're more comfortable.
However, if you like to blast your ear drums into next Tuesday, you'll be hard pressed. The volume is adequate, but not ear-bleeding.
Since I bought them for just over £10, these headphones are more than worth the buy. I just hope they last.