The third generation of Klipsch's award-winning premium Reference Premiere 600M II features new, larger proprietary Tractrix horn technology to improve high-frequency response and extension, while enhancing imaging and dynamics. Klipsch signature copper Cerametallic woofers with aluminum faraday rings and Tractrix ports provide powerful low frequencies while minimizing distortion and maximizing efficiency. Sleek cabinet design details exude refinement and luxury with enhanced cabinet bracing, aluminum binding posts, cat aluminum feet, and discrete Dolby Atmos connections that allow for easy and refined elevation speaker integration.