Get the full effect of Dolby Atmos and DTS:X with Sonys Vertical Surround Engine, S-Force PRO Front Surround and 360 Spatial Sound Mapping 360 Spatial Sound that adapts to your environment available with optional rear speakers Sound Field Optimization easily calibrates the HT-A3000 to your room Immersive surround sound from built-in dual subwoofers and three front speakers including a center channel for clear dialogue Music comes to life with 360 Reality Audio