Sound quality design based on the latest acoustic engineering and psychological research results. Delivers clear sound quality across all bandwidths and a sense of real, true-to life sound. Using the usual method of sound creation whereby certain high frequencies are emphasized, you’re given to feel vivid sound when you first listen, but because of this, other ranges become clouded and hard to hear. With E4000, no particular sound ranges have been emphasized, and this, together with commitment to detailed sound expression, results in realistic sound that sounds as if it were being played right in front of you. In addition, an MMCX connector that can be re-cabled has been employed.