Specification: Features:_x000D_1. Adopt ST Microelectronics latest power amplifier IC._x000D_2. Built-in USB/MMC and FM radio components._x000D_3. 5 kinds of EQ sound field processing mode._x000D_4. High and low tone independent adjustment._x000D_5. LED interface function display._x000D_6. Pure aluminum shell to eliminate noise sound._x000D_7. 15WX2 4 powerful power output._x000D__x000D_Specification:_x000D_Output power: 20W+20W_x000D_Frequency response: 20Hz-20KHz_x000D_Intermodulation distortion: 0.4_x000D_Input sensitivity: 470mV_x000D_Signal to noise ratio: 80dB_x000D_Power: 12V/2A-5A (Not Included)_x000D_Remote control battery: CR2025 button battery_x000D_Impedance: 4-8_x000D__x000D_Package List:_x000D_1 * Small Power Amplifier_x000D_1 * Remote Control _x000D_1 * Instruction Manual_x000D__x000D__x000D_Note:_x000D_There is no power cord in the list, so you need to buy it yourself. Features: 1Adopt ST Microelectronics latest power amplifier IC. 2Built?in USB/MMC and FM radio components. 35 kinds of EQ sound field processing mode. 4High and low tone independent adjustment. 5LED interface function display. PackageList: