amp

I purchased a used Jeep Grand Cherokee this past week, and I love it. I was driving a Jeep Cherokee previously, and I love this JGC even more. The Full time 4X4 is awesome for the coming winter, and the interior is ballin. It also came with a nice new JVC audio deck already installed...

When I turn on my radio, I get very little volume. The sound is very low and distorted. I unplugged the amp and it totally turned off the radio. I believe the amp is gone, has anyone else had this problem? I searched the posts, but was unsuccessful. Thanks!