This Polk Audio S20 has been designed to bring big surround sound theater and music experiences into the comfort of your living room, the Polk Signature Series continues Polk's legacy of American Hi-Fi. Acoustic array developed by Dynamic Balance, precision crossovers, diffraction-free magnetic grid, modern housing design and exclusive Power Port technology for improved bass - all-new design for high-quality sound in movies, TV and music will be realized. Plus, when it comes to great sound, we're always by your side. Whether you're looking for Signature home theater speakers, subwoofers, or soundbars, we've got it all here.