4 way - http://www.amazon.com/Pioneer-GM-4300F-4-Channel-400-Watt-Amplifier/dp/B000LYCWM4/ref=pd_bxgy_e_text_b
2 way - http://www.amazon.com/Pioneer-GM-5300T-2-Channel-760-Watt-Amplifier/dp/B000LYCWME/ref=sr_1_2?ie=UTF8&s=electronics&qid=1227598338&sr=1-2
Which of these would be...