Hi-FI Stereo Audio Amplifier, 10 Watt per ChannelSpecifications:Voltage Input: 12 Volt DC @ 5 Amp (DC Coxial Connector with ~4′ Wire Included) Center PositivePower Output: 10 Watt RMS per Channel 1kHzFrequency Response: 20Hz~20kHzSpeaker Impedance: 4~16Output Connections: Terminal Spring ClipsOverall Dimensions: 6″ (W) x 5″ (D) x 1.75″ (H)Mounting Holes 5-11/16″ Center to CenterFeatures:Volume ControlBass Control: 12dB 100HzTreble Control: 12 dB 10kHzBalance ControlSNR: 85dBAudio Inputs: Two RCA Female for CD or DVD, One 3.5mm Female for MP3 and One USBPipeman’sIS-AMP-220