Output power: 30w+30w Drive unit: 8''*2+3''*2 Frequency response: 20HZ-18KHAZ OHM: 4 Power supply: AC 220V-240V 50/60HZ subwoofer speaker,audio system ,multimedia speaker sound box, with USB/SD/FM,LED light,clear sound quality 2.0 active usb multimedia professional speaker led dj stsyems