The UM1 is a single balanced armature driver universal-fit earphone offering excellent sound at an entry-level price. With comfortable Comply tips, the UM1 provides hours of fatigue free listening with up to 25 dB of ambient noise reduction. The UM1 is the perfect entry-level earpiece for performing and personal listening. Equipped with a durable 50" stereo "Y" cord and a 3.5mm...
“ http://www.head-fi.org/forum/thread/562428/review-kozee-infinity-x1-custom-molded-iem See above for my in depth review. This really is a good product. The issue is with the company itself. As I mention in the review, they are not returning emails from customers. And when people do manage to track them down on the phone - they make promises that are apparently not kept. I like Kozee...” --project86