I really don\'t know. But it has fantastic sound when you get some proper headphones (Sony MDRs are good usually) as I\'ve had plenty of problems with the supplied HS-28s. The remote isn\'t that good either (the AD-36) so if anyone knows of a better one I can buy without spending like ?100 on the wireless bluetooth one..
But another thing to consider, it\'s certainly built to last. Mine has been in the pond (don\'t ask), bashed up and it still works perfect.