Since I didn't get any response from this site (I must've stumped you guys) I called Crutchfield and they recommend the KICKER KX350.4. It's within my budget and works with my infinity speakers. Here's the specs:
Details:
» 60 watts RMS x 4 at 4 ohms (90 watts RMS x 4 at 2 ohms)
» 175...