I just got a Kenwood 12 inch shallow mount sub that is 350w rms and 1400 peak, right now i have a old Rockford punch 250w 2 channel hooked up to it bridged and i think it could use more power. What is a good cheap amp that will work for this? http://www.crutchfield.com/p_113KFCWS12/Kenwood-KFC-WS12.html?tp=111