Bose Acoustimass III 5.1 Home Theater System w/ Bluetooth Quality Bose 5.1 surround sound with rich, deep low notes for music, movies and games. Virtually Invisible cube speakers and a hideaway Acoustimass module blend into your room. Color-coded speaker wires included to simplify setup. Pioneer VSX-5231 5.1-channel AV receiver Advanced audio and video processing, with 3D and 4K Ultra HD pass-through, allow you to get the most out of your high-definition and 3D sources.