... devices which in different gateways3, Support various audio decoding formats: MP2, MP3, WMA, WAV, and support multirate MP3 file4, Available to ... switch on/off sequentially, independent control, pre-switch on and delay switch off5, High, low volume adjust, input ... tasks8, With network audio-on-demand and selected broadcast functions9, Microphone mute and sound mixing function10, Manual reset function ...