With 165 watts, the Str-AN1000 delivers cinema-like surround sound and crystal-clear music reproduction with powerful amplification. This set contains Sony Str-AN1000 7.2 Channel 8K Av Receiver with Dolby Atmos, and Dts:X (Black), Sony SACS9 10-Inch Active Subwoofer (Black), Sony SSCS3 3-Way Floorstanding Speaker (Pair, Black), Sony SSCS5 3-Way 3-Driver Bookshelf Speaker System (Black), Sony Ss-cse Dolby Atmos-Enabled Speaker Pair, Sony SSCS8 2-Way 3-Driver Center Channel Speaker (Black).