Small and compact design, built-in USB,SD,FM tuner, Bluetooth and 1 external AUX inputs as audio sources;Pure copper transformer drives strong power RMS 60W, 120W and 180W;4-16 ohm, 70V, 100V speaker output;2 zone with individual volume control;Mic, AUX, MP3, treble, bass, and master volume control;High quality copper transformer ensures best sound performance;Shortcircuit, over heat, over load protection;AC 220-240V power supply;Remote controller