The IE 500 Pro is a smooth sounding iem that is able to provide punchy bass, lush midrange and controlled treble. There is a full-bodied and bold expression. The soundstage gives an open feeling. In addition, the IE 500 Pro has solid build quality and it uses Pentaconn Ear connectors. The Sennheiser IE 500 Pro delivers a soothing and immersive listening experience.