Shure E4c Noise Isolating Headphones

E4s are outfitted with high-energy/low mass micro-transducers providing wide-frequency stereo sound, sonic accuracy, and-naturally-total isolation from outside noise. Sensitivity at 1 KHz is 111 dB SPL/mW, while impedance will be 29 ohms (also at 1K). Gold-plated stereo output connectors are also part of the package featuring a 1/8-inch plug. 61 inches of cable will be supplied standard with each unit.The natural design of the stereo E4s rests comfortably within the ear, providing both a tight seal for sonic isolation and a secure fit. Like all other professional-grade E Series earphones, the E4s are capable of being used with foam, flex, or triple-flange accessory sleeves. Each E4's 1/8-inch plug additionally makes it perfect for use in a wide variety of other personal audio applications.The E4c earphones were named one of this year's International CES Innovations 2005 Award honorees. Incorporating the same precision components used by professional musicians to monitor their performances onstage, the earphones are equipped with High-Definition drivers and Tuned-Port technology-two innovative features from Shure that combine to create an ultra-wide frequency soundstage with brilliant highs and extended bass. The perfect accessory for music lovers who are serious about sound quality and detail, the E4cs are also the lightest in Shure's family of E Series earphones. minimize