These guys are running a fraudulent business. My amp stopped working about a week of installing. I contacted the company (audiosavings) through Wal mart. The items has a 1 year warranty. I attempted to contacted Audiosaving for about a week before they responded to emails or phone calls. And they said it was covered. I repacked amp as carefully as I could and returned it. The company received the item on May 26. The company finally responded to my emails after several attempts to contact them on or around the 5th of June. On that day they wrote and said they would not honor the warranty because item had been modified. In no way shape or form did I "modify this amp" I don't know anything about them. I simply took it out of the box, installed it to a wooden board for mounting using the provided screw holes on the amp, and connected to power. That's it nothing more. This company lies and takes advantage of blue collar folks like me.