The Apollo S90 9.1-channel surround sound system delivers immersive cinema-quality audio with SurroundX and Dolby Atmos, creating a 360degree(s) soundstage. Its 6.5-inch subwoofer with BassMX technology provides deep, dynamic bass, while the split design and 20degree(s) waveguide ensure clear vocals and flexible placement. With the Ultimea App, you can customize sound using 121 Eq presets and multiple modes.