So I have two amps that need to be tested to make sure they work. They worked perfectly fine when I had them setup in my car, but that car got into a car accident that totalled it and I am not sure if the amps are still good? People told me they could of been damaged on the inside even though there are no scratches or imperfections on the outside. Anyone that can recommend someone or anything that would be great! I am located in South Jersey (Washington Twp)