Pelican turned their meeting room into a small club, complete with a dj duo and club lighting. They were focusing on their Headbanger Audio line of speakers and ear subs. There are HeadSubs that are specifically for PSP and iPod and one that's Universal. The EarSubs also have a model for PSP, iPod and a Universal set.
I tested a pair of the HeadSubs at the booth and found that they sounded really good and were quite comfortable. They have a sleek and foldable design with high quality neodymium speakers.
Both the Universal and PSP EarSubs retail for $29.95 USD, with the iPod (officially licensed) models retailing at $39.95. The HeadSubs foldable headphones are $10 more, at $39.95 USD for PSP and Universal and $49.95 USD for iPod.
I'll give a full review of these when I get a chance to do a hands-on evaluation, but in my brief experience with them, they seemed to sound good and feel comfortable.