Etymotic is one of 'the big two' in the arena of canal phones. Known mostly for the high end ER-4S cans, Etymotic decided to throw their hat into the iPod popularity ring with the ER-6i. This is slightly confusing because the company also offers a black ER-6 model, and consumers' first impressions would make them believe that the 'i' is just a marketing gimmick aimed at wooing the iGeneration. But, there is a different driver used in the 6i that outputs stronger bass, and is easier to drive. This makes them perfect for mobile device use, and particularly Apple iPod and Sony PSP use. As with all canal phones, external sound is almost completely blocked, so use only when it is safe to ignore the rest of the world.



Link: Designtechnica