i dont care for sony mobile audio... for subs it should be okay though... you need to give better specs on the subs to get a good recomendation.. im guessing yours subs arent 1100 watts rms.. u need to find out if they are recommended for 2 ohms or 4 ohms and what the rms at those resistances are.. then you can match up an amp to similar numbers... the best way to get good sound from subs is a good box.. wiring is also important to make sure you are getting the most power to your subs