Electric Control Device 1.family music playing 2 ... ,sound source selection, volum and tone control3. Control device with amplifier function having 6 channel outputs, ... inputs including DVD,MP3,Radio,PC,TV,AUX4. Control device with signal matrix function (6 sound source ... independent turnon/turnoff, volume & tone control function7. Supplying with remote control pad and controller for room turnon/turnoff ...