Stepping up to a fully custom in-ear musician monitor has never been easier than with the AC1. Whether youÕre a seasoned performer, emerging artist or listening enthusiast, WestoneÕs custom-fit technology, cold pour acrylic body, single balanced armature driver, removable EPIC Pro cable all deliver serious value. The AC1 is available only in clear, full acrylic, with Westone etched on the faceplate and a clear cable. Great for listening to your iPod/MP3 player. Ear impressions are required for all custom products.