These headphones have a great sound and nice fit due to different size ear pieces and loud too. Other than the extension cord being too long they're brilliant.

Would recommend. The Sony MDR-EX71SL has great sound and wonderful base, you wonder why the floor isn't moving with the beat! The treble is crisp as mentioned and the music and vocals have excellent clarity. Once the ear buds are in place, they seal off your ear, almost eliminating background noise, which also allows you to turn the volume down a bit and still hear well. There isn't much sound leakage, as it's mostly going in, but getting the right size ear bud can be tricky. It comes with large, medium and small, either of which can be fitted to accommodate your ear size. The short cable is OK, but you also have an extension cable if you need the extra reach.
The headphones come with a nice pouch, as well as a little case to protect the ear buds.