I was once told that my old amplifiers were going to fry upon the first power cycle in the car by a sales associate at a car audio shop trying to sell me a brand new Memphis Power Reference amplifier. I told him that I had a 55 amp, 12 volt power source, and they worked perfectly fine on it in the house on my test bench. His retort "Yeah, but when you put them in the car, they are going to blow. You've been warned and you are going to wish you had purchased this amp that is on sale for today only!"

I told him that I would see him again and just pay full price if that is indeed the case.