Polk Command Bar — it’s the home theatre sound bar system with Alexa built-in. With integrated far-field microphones and Alexa voice services, use your voice to control the sound bar, your smart home devices and stream music — “Just Ask.” Features patented Voice Adjust technology for crystal clear dialogue, a wireless subwoofer for deep bass and 4K HDMI ports. Plus, it’s fully compatible with FireTV (sold separately). Includes HDMI and Optical cables for quick and easy setup. With a performance tuned driver array, wireless subwoofer and Dolby/DTS surround sound decoding, you get an immersive, room-filling home theatre experience. Use voice commands to control volume, select a source, set the bass and choose sound modes on the sound bar. At high playback volumes, use the Action button on the remote or the sound bar to ensure voice commands are heard every time. It works with 4K and HD TVs — plus, built-in dual HMDI 2.0b inputs ensure 4K HDR content looks great.