A:Answer First off what you need is a 4 channel amp to run that set up, however the Kicker CX-400 is a good starter amp for the average and above installers. you won't win best sound but if you're looking for a good upgrade you'll be pleased, it packs a punch when running this amp with a 10-12 inch woofer.
A good 4 channel amp is dependent on the music you mostly listen to, heavy bass music like rap Kicker, JBL provides that support, clarity I would do Alpine, Kenwood, Pioneer. Key point always look at the RMS rating not max rating. hope this helped.