Not everyone listens to music in the car from a flash drive or phone. But many people like to listen to the radio. After all, there is not only music, but also news. And it is very unpleasant when you have traveled far away from the city and the radio signal is so weak that the stereo does not catch it. The amplifier is connected to a pre-installed radio antenna. The wire is copper, the device has a built-in fuse. Works with both FM and AM stations. It is powered by 12V