Sean,
Check out http://www.headphone.com. It's Headroom's website. I'm got a Headroom Cosmic amp and Etyomtic 4S's. These ear buds are simply the best. They are great for mobile use, the absolute best for air travel since they do not let any airplane noise in are are the best headphones i've ever heard. The Etyomtic 4P version is almost a good as the 4S but does not need a headphone amp.
Check out http://www.headphone.com. It's Headroom's website. I'm got a Headroom Cosmic amp and Etyomtic 4S's. These ear buds are simply the best. They are great for mobile use, the absolute best for air travel since they do not let any airplane noise in are are the best headphones i've ever heard. The Etyomtic 4P version is almost a good as the 4S but does not need a headphone amp.