Mini 2x40W Stereo Power Amplifier: "2x8W 1% THD and 2x40W MAX. POWER ON/OFF switch and LED indicator MASTER volume control TREBLE and BASS controls PUSH TYPE speaker output Compatible With Any Audio/Computerize Devices (MP3)Via 3.5mm To RCA Converter RCA jack input 110/220 VOLTAGE selector Dimensions: 6.3''W x 2..72''H x 4.72''D"