I thought I read somewhere on termpro, it was benched it didn't put out anywhere near rated power. I can't find the thread right now though.
a square wave is a "clipped signal".with the fusing that is on it at best it could be 2100 watts. That is assuming 100% efficiency and constant 14.4 volts. So most likely if it was 80% (still a stretch) and running on 12 volts it would put out about 1400 watts @ 1 ohm. Even that could a be a severely distorted/clipped signal. Even if it, in a perfect world, did put out 3200 watts it would probably be square waves.