Vizio S3851X-C4 38-inch 5.1 Bluetooth Sound Bar with Rear Satellites and Wireless Subwoofer DTS Circle Surround, DTS Studio Sound, DTS TruVolume Connectors:Stereo RCA, Bluetooth, Optical (Toslink), RCA Coaxial, 3.5mm, USB 100 dB of crystal-clear audio at less than 1 percent harmonic distortion Wireless subwoofer delivers thunderous bass without clutter for low-frequency response