HIFI DAC Audio Sound Card for Raspberry pi B+ / 2 Model B Function introduction: upgrade DAC chip, using PCM5122 chip of high end, using I2S interface, and can be through the I2C interface to adjust audio volume parameter adjustment; supports 16 to 32 bit audio data format; distortion and dynamic is very ideal, support the tall sampling rate of 384kHz, 112dB dynamic range, degree distortion -93Db.For with no sonic