VIZIO S4221w-C4 42-inch 2.1 Home Theater Sound Bar with Wireless Subwoofer (2014 Model) Best in class audio performance: 101dB of room filling, crystal clear surround sound with less than 1% total harmonic distortion Wireless subwoofer adds rich, powerful bass from anywhere in the room Wirelessly stream your music from a smartphone, tablet or PC via Bluetooth Premium audio with Dolby Digital and DTS Digital Surround decoding plus DTS TruVolume and DTS TruSurround audio post processing Sound Pressure Level measured using pink noise at 1 meter, C-weighted. Total harmonic distortion calculated as electrical measurement of amplifier distortion. Sound Pressure Level measured using pink noise at 1 meter, C-weighted. Total harmonic distortion calculated as electrical measurement of amplifier distortion. Wireless Subwoofer range approximately 60 feet - line of sight from Sound bar.