The Sennheiser IE 8's audio performance warrants a standing ovation. Rediscover your music collection and tailor it to your aural tastes with a tunable bass frequency response. The customized sonic signature is complemented by a unique fit thanks to the included ear adapters, ensuring perfect fit, guaranteed. This fit isolates the user from their environment, offering passive noise attenuation and the best sound experience. The compact design of the IE 8 works with any attire in any situation. The IE 8 stores quickly and safely in the included carrying case.