12V 1000W Powerful Bass Amplifier Board for Car Modification.High power, good sound quality, no distortion, give you a great hearing enjoyment.Current /Amperage Overload, Short Circuits, Thermal Overload,DC Offset.Operating Voltage: 12V;Rated Power: 600W;Peak Power: 1000W;Impedance: 4Ω.Frequency Response: 30Hz~280KHz;Sensitivity: 75-90dB; Distortion: 0.01%;Channels: 1-Channel.Size: 23.5x15.5cm (LXW).Light weight, handy and easy to install. Power connection: 1.Car has a CD player : GND then negative vehicle power ; 12v power supply connected to the car s positive ; REM CD player connected to the control line (so the CD player can directly control the subwoofer amplifier on and off ) 2.Car no CD player : GND connected to the negative power of the car , + 12V and REM connected together in positive 12V car power ( + 12V can also be an indirect one with REM switch control amplifier switching function ) 3.Directly with the battery (battery) connection : GND connect the battery negative , + 12V and 12V REM then the positive battery simultaneously. Note: There are no instructions included in this kit.Professional Installation Is Highly Recommended We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 1pcs 12V 1000W Amplifier Board PA-80D