Do I need a capacitor if I am only going to run a 600W Amp? (Kicker KX600.1)

Thanks!

Btw, I have a 2005 Maxima SE.

 

I ran that amp- current draw is minimal, great amp-runs cool, ton of power
You do not need a capacitor, amp has a good power supply- adding a cap would actually present a greater load to your electrical system than running that amp alone

 

Thanks for your help! Greatly appreciated.