Recommendation: Koss Plug
I have to say, I was unhappy w/ the volume of my new mp3 player, so I went looking for a volume booster, but they were too big (especially considering how small my mp3 player is) and then M told me that different headphones are louder than others, and when you look at the specifications, you want the highest “sensitivity” you can get. So I went to Best Buy and the headphones (well, earphones) that had the highest sensitivity were the Koss: The Plug ones. Holy shit are they good! They are like earbuds, but they have these really soft rubber cones that go in your ears and I swear they sound as good as the best headphones out there!!! I say, if you are looking to improve the sound of your mp3 player (or cd player or walman or whatever), get these earphones!