... chip,with a little amount of external components, such as audio amplifier,microphone, speakers, etc. Also adopt industrial-level design ... super operating capacity.4) With 12-bits digital audio signal serial input, DAC audio output port,the sampling rate is 8kbps.5 ... technology, can share the 2.4G frequency band withwireless network card and Bluetooth11) Auto power-saving sleep protection, internal and ...