So i got a double din installed on my car and after about a month my system would just randomly turn off(headunit would power off and same with subs and amp) it did it once then would reboot. I took it in they changed the wire harness and the ground. It fixed it for about 2 days i then decided to change my negative battery cable and that fixed it for a few months and then it came back and i noticed that with the head unit turned off that there was a bass note from the subs playing real faint until i turn the bass knob it gets louder. What could be the issue on why my head unit turns off by its self faulty head unit, bad amp need help asap.

Double Posting ???