Have both ISine 20 and LCDi4. Leak sound in like nothing was in your ear. No music playing you can hear everything Round you. Music playing it will drown out most average level noises. I compare it to listening to a high quality audio system in a vehicle while driving. You can hear the road noise, but the music is what you hear most. As far as what others hear, it's minor, seeing as these are in ear, doesn't take ridiculous levels to hear plenty of volume. Others around you won't be bothered unless they are joined to you at the shoulder
Thanks, I’m definitely interested in these. Closest coworkers are a couple of meters away, so it probably shouldn’t bother them. I’ll wait for reviews and see what the EU prices shape up to be.