Vehicle-mounted terminal and audio device thereof

The utility model relates to a vehicle-mounted terminal and an audio device. The audio device comprises an audio processing unit, an audio power amplifier unit and a mute control circuit, wherein the audio processing unit is suitable for processing audio data and generating an audio output signal and a mute signal; the audio power amplifier unit is suitable for carrying out power amplification and output on the audio output signal generated by the audio processing unit; the mute control circuit comprises a first input end, a second input end and an output end, wherein the first input end is connected with the audio processing unit so as to receive the mute signal; the second input end is suitable for receiving an external control signal; and the output end is connected with the audio power amplifier unit and is used for outputting a mute control signal to the audio power amplifier unit when the mute signal or a control signal is valid. The utility model is beneficial to avoiding the audio power amplifier unit outputting noise.