Shure E4c sound isolating earphones

Shure is updating their E Series sound isolating line with a follow-up to the
E3c earphones. The E4c's have been updated as per consumer request for better bass response and modified design characteristics to better complement portable digital audio players. They incorporate the same studio quality components developed for in-ear monitoring by the pros, and feature ultra-wide frequency Tuned-Port technology to deliver both an audiophile high end as well as extended bass.
They'll be shipping with multiple foam and flex sleeves for personalizing the fit to your ear and maximizing the sound isolation. Shure will be showing them off at this year's Home Entertainment Show at the end of this month.