i have an autotek mm3000.1d and i didn't realise the amp draw when i bought it. it is new in box but i think i might sell it for $650 or should i pay for a altenator and extra batt that it is going to take.
I think you have a good amp and will probably need the h.o. alternator/battery upgrade for any other system you're planning anyway(at some point). I'm running mine off the stock system with a single Optima red top right now and have dimming when it's cranked, but otherwise I've been putting off the alt/dual batt. upgrade for later.
def invest in the electrical upgrades. like beast said with the little weenie alt that comes stock you will probably need to upgrade anyways unless you plan on running something quite small........and from the looks that you bought that autotek i dont see that happening