This is information on the STA381BW Sound Terminal® 2.1-channel high-efficiency digital audio system. It features a wide-range supply voltage, I2C control, embedded full IC protection, 1 Vrms stereo analog input, I2S interface, three output power stage configurations, FFXTM 100 dB dynamic range, fixed output PWM frequency, embedded RMS meter, and a new fully programmable noise-gating function.