I recently installed a pair of 30W 4 Ohm speakers with a max wattage of 300W. When choosing an amp is it correct that I need the channel output to be equal to or greater than 30W @ 4 Ohms and a max power output of the amp to be equal to or greater than 600W for the best quality sound? The amps I am currently looking at are the Alpine BBX-T600 or Kenwood KAC-PS702EX but am open to opinions and recommendations.