Product DescriptionSpecifications:Model: LP2020A+ Color: Black Material: Aluminium Alloy Impedance: 4-8? Rated Power: 20W Nominal Voltage: 12V Input Terminal: RCA Rated Frequency: 20-20k HZ Distortion Rate: &lt; 0.4% SNR: 80db Product Size: 5.5*4.6*1.6 inches Product Weight: 14 oz Package Dimensions: 10*5.8*2.0 inches Package Weight: 16.8 oz Packing: Box <br />Package Content:1 x Audio Amplifier 1 x 12V3A Power(US Plug) 1 x Instruction Manual