I have 3 Alpine amps totalling 2500 true watts of power (alpine MRD-M1000, MRP-M1000, FRP-F550) all running off this capacitor. I have a 1/0 guage wire from my battery (Yellow top deep cycle Ultima) and a 220amp alternator and 4 gauge wire run off the capacitor to each amp and I see absolutely no headlight dimming, no starvation of power to my amps (the MRD has a digital readout that will display current and amp draw in real time). It is small so you can mount it about anywhere unlike the cylinder type which are large and are difficult to find a mounting location.
It looks great, very user friendly, easy to mount, and does it's job well.