Final Audio Design E4000 High Resolution In-Ear HeadphonesThe Final Audio E4000 delivers clear sound quality across all bandwidths and a sense of real, true to life sound. Final Audio carried out the sound design of the E4000 based on the latest acoustic engineering and psychological research results. Advanced Sound Creation Using the usual method of sound creation whereby certain high frequencies are emphasized, you're given vivid sound when you first listen, but other ranges become clouded and hard to