The Polk Audio Signature Elite ES55 is a medium tower speaker designed for room-filling, high-resolution, cinematic sound for movies, music, and gaming. Key features include a 1-inch Terylene dome tweeter for clear highs and dual 6.5-inch mica-reinforced polypropylene woofers for robust bass, a slim design, and Polk's Power Port bass enhancing technology. It is Hi-Res Audio certified and compatible with Dolby Atmos and DTS:X systems.