I purchase these after my cat eat my Ipod Touch earbud and I be leery because of the review that state they distort music with excessive bass . the only time that happen be when you turn the bass setting up on you mp3 . these thing do not need the bass turn up because it be build in . they deliver rich distortion free sound that I think would be hard to outdo with earbud cost hundred more . moreover they fit perfectly with the softest silicone tip I have ever see . never hurt you ear even after hour of wear they . I highly recommend this product .