If you're in a silent room listening to these, then they sound fine. Nothing amazing, just fine. Walk outside the front door and the birds singing drown out the music. You will hear everything going on around you and the music takes second fiddle. No pun intended. Build quality is fine, the remote is a bit fiddly as you have to look at it to check which button is which. The three different sized ear pieces - and I've tried them all, really don't help the isolation of external sound and I've given up with them. They for the most part sound as though you've really nice ear buds on, but they're at a point of being not in your ear properly and so the sound sounds thin. I've stuck them on ebay... some mug'll buy em... After all, I did!