When I turn off the stereo the amp turns off likes it's supposed to but when I turn the stereo back on the amp stays off. To turn it on I have to take of the fuse and put it back it or reset any other wire. Whats wrong. I hate listening to music without that big bass.

headunit problem? one of the settings might have sub outs turned off...

check the remote wire. Also, it might be a bad relay in the amp itself. Dont know what else to tell you.