Providing 3D surround sound, audio mixing, 20 band equalizer, and dynamic range control, 20 Watt Models IS31AP2111 and IS31AP2121 target medium-power multimedia applications such as Bluetooth speakers, sound bars, LCD projectors, and HDTVs. Both devices operate in Bridge-Tied Load mode, which doubles available power to speaker load. I2S interface transfers audio signals in digital format to maintain maximum audio quality when distributed between audio devices.