Without more specifics on the Brand, Make and Model of the speakers and the sub, we do not know what kind of power is required. 10 inch kicker is like saying I have a big Honda...Honda what? What year? Civic? Accord? CRX, CRV? Element, Odyssey? And then even more so, DX, LX, EX, Automatic, Manual etc? We need the specifics to give a specific answer. Also your price range...How much are you looking to spend? If you just have 2 door speakers and one sub in one vehicle then you ll need AT LEAST a 3 channel amp. One channel per speaker/sub. But as far as specifically how much power is needed per channel, again depends on what kind of speakers/subs you have.