Supports USB pen drive and SD/MMC card Built-in FM Blue LED Power indicator, Fully functional remote control, FM frequency scan range: 87 - 108MHz Output power (RMS):20W + 10W x 4, Frequency response:20Hz - 20KHz; FM frequency scan range: 87 - 108MHz; FM storage memory: 40 channels Impedance Subwoofer drive :4 Ohms Satellite drive : 4 Ohms Sensitivity : 500mV, S/N Ratio : ≥ 72dB, Separation : ≥ 45dB, Subwoofer drive size Remote sensing distance ≥ 6meters. Power consumption : 70W; Input power : AC 230V / 50Hz