I have been running this amp now for about 2 years and using it pretty much every day at maximum capacity. It pushes one MB Quart DVC 12 inch Sub to the mechanical limit of the speaker. I have also used it to move an Alpine Type X and it did okay there, but I would probably go to the 1000 watt version for a long stroke sub like that one. Never shuts down, works fine with a 3 farad capactitor and 4 gauge wiring, standard 90 amp alternator and battery. Overall a little more money than some of the other brands, but this one is worth the extra just for the small package size and extreme efficiency. Spend the excess here and avoid buying upgraded electrical system components for the average system. I also run Alpine PDX for my components and the whole system does not even bump the headlights due to the extreme efficiency of these amps.