High efficiency, wide frequency, quality. Strong heat dissipation power drawing technology is compact. 12V 600W car amplifier board gives you a in-car entertainment. With current protection, overload protection, short circuit protection. Connecting to the 12V power supply must be connected to the electrode of a battery, can not in the car just to find a connected, or burned out car circuit. GND interface must be connected with the cathode. Connecting the power cord of the three interface in the middle of the interface is the controlline rem, began testing machine take 12V test. And then find the top of the controlline interface wiring, and be careful not-to-Press the ground in the car, the exposed place carefully with electrical tape wrapped package is solid, otherwise it will cause a short circuit burned out the machine. Voltage: DC 12V Max Power: 600W Rated Power: 150W Current: 10A Impedance: 4ohm : Less than 0.1% Frequency Response: 30Hz~280KHz Colour:black Material:Metal + plastic Size:17 x 15.5cm Package Contents: 1 * Car Amplifier Board Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.