Great Amp if you buy warranty

I've had this amp for 2 years now. It sounds great for the price and really pushes on my 2 12inch MTX 6000's. However, the first one stopped working after 10 months and circuit city said it was fried. I didn't purchase the circuit city warranty for the amp because they never offered. After there lack of help, I called S.A.S Bazooka and after giving them a model number they said i could send it in for a replacement. It was a hassle mailing it but i did receive a new amp in like a week.
However...........
After 4 weeks the amp went again!! I went back to circuit city and they had no explainations on how anything on the installation aspect of it could fry the amp again. This time they gave me a new amp without realizing i didnt have the warranty, and when they realized i didn't, they finally gave me the option to buy the insurance which i did. So now i'm on my third amp which is still going strong.