Check the listing for details. STEREN SEL-400. Color: Black, Condition: Used. Listed at 30.00 USD. The STEREN SEL-400 is a home audio component that enhances the sound quality of your stereo system. As a part of the home audio components category, this product is designed to provide clear and crisp audio output, perfect for enjoying your favorite music and movies with better sound quality. Whether you are looking to upgrade your current audio setup or enhance your home entertainment experience, the STEREN SEL-400 is a reliable and quality product to consider.