I believe that would be 1200 RMS at 12 volts at 2 ohms bridged. Given the extent that USAMPS is underrated I would estimate around 1600+ at 14.4 at 2 ohms. Bump up the voltage with a DC to DC converter and you will see even more //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Asking 450 for the USA-400. It has a few nicks but I am in the process of trying to get new parts for it (custom plexiglass bottom) and perhaps a new endplate.
hard to tell. Id have to hook it up and compare to an amp of power that is known. I would say that it wouldnt be too much more than what it is rated at. It could very well be. Im pretty sure USAMPS can be run up to 16 volts or more. Higher volts would increase power output significantly. Hook it up to a 100-250 RMS sub and it will bump pretty nice.