The Register has written a review of the EarThumps earphones from Griffin, here's a short snip from their article:

I've long stopped listening to portable music players on London's Underground. You have to turn the volume so high to rise above the background racket, it quickly gets uncomfortable. I began to worry about my hearing. Skip forward several years to the iPod era and my fears were undiminished - quite the reverse, actually, since I use my MP3 player far more than I did my Walkman. So Griffin's claim that its EarThumps earphones offer "exceptional noise isolation" intrigued me..



Link: The Register