ZVOX SoundBase 770 42&rdquo; Sound Bar with 3 Built-In Subwoofers, Bluetooth, AccuVoice Left, right and center speakers for super-clear voice reproduction Beautiful full-range sound from a single cabinet, no separate floor standing subwoofer needed Each Sound Base can learn to respond to your preferred remote control. Optical and coaxial digital audio and analog audio inputs Designed to support a TV placed directly on top of the Sound Base, if desired. Frequency range: 35 Hz - 20 kHz AccuVoice feature uses hearing aid technology for super-clear dialog reproduction