The FIBAE 4 is a fun sounding iem that is able to provide bold yet punchy bass, lush midrange and controlled treble. There is a full-bodied expression with excitement when required. There is a soothing sonic performance that allows listeners to immerse in the music. In addition, the FIBAE 4 has a stunning design. The Custom Art FIBAE 4 showcases a virtuoso and engaging sonic performance.