What model is the amp? If it's the only amp your going to use, 4 awg would probably be ok. Just make sure to have the proper size fuse in the fuse holder and I would recommend at least a 1 farad cap. You can get a digital cap so you can see exactly how much voltage your getting. Don't quote me on the 4 awg though, I'd like to know the model # of the amp first so I can check out it's specs.
