One Bar - Home Theater Soundbar/AV Preamplifier System State-of-the-art Home Theater AV Preamplifier with four HDMI inputs and the latest 7.1 surround sound decoding 16 low-distortion power amplifiers 16 full-range 2.25" diameter speakers with neodymium magnets 8 passive radiators for enhanced mid-bass performance Wi-Fi control and streaming from smart phones, tablets and home networks