FeatureBrand new Mini Hi-Fi Stereo Amplifier for cars， motorcycles， or boats. Features an RCA jack and works well with iPods and other audio devices.Compact design and simple to install; perfect for boosting the sound quality of your stereo， especially in a vehicle. Good quality and good value device that will meet your audio needs.SpecificationMaterial: Aluminum caseRCA inputTwin power IC chipsInput Voltage: DC12VFrequency Response: 20Hz to 20KHzOutput power: RMS 20W+20W 1KHzSNR:85dBHigh control: 12dB¡À10KHzBass control: 12dB¡À100HzThe signal level: 220MV 47KColor: BlueSize: 10.5*7.3*4.3CMPackage including1 x Audio Amplifier1 x User Manual