I am getting powerful sub. That is why I am getting this amp. Also I have seen small to big sub, but the only guy that owns a car sterio is not that good. I want electricity of the car to be perfect that is why I am asking you guys. Also I just wanted to know about .5ohms I am going to use it by 1ohms. So A 300 AMP FUSE, AND 200 AMP ALT WOULD DO PERFECT? I WOULD LOVE TO GET THE 200 AMP ALT. ALSO I WANT TO HAE A 14.4 V ELECTRICITY, SO WHAT DO I NEED? I WOULD LOVE TO TALK TO SOMEBUDY VERBALLY, WE COULD DO IT ON SKYPE. LET ME KNOW. ALOS I MIGH GE TA WEBCAM IF THAT HELP (IT PROBEBLY WOUNT).