anyone heard of a capacitor?? hehe.. i would say a 2farad cap would definitely HELP against too much power draw from the amp.. it wont guarantee no failures, but it will help ease the stress on your electrical system.. get a good battery (optima yellow or red top) and a higher output alternator to go with it and you should be fine.. there shouldnt be a need for a second battery unless you are going for looks or something.. (my 2cents)