All you can get

subwoofers are dedicated to reproducing low audio frequencies and provide depth to the overall sound of your music. The RMS power handling rating refers to the amount of power a sub can handle on a continuous basis. We recommend giving your sub 75% - 90% of its recommended RMS rating to help prevent over-powering or [...]

A car amplifiers acts as the power source to your sound system. Technically, the amplifiers modulates power generated from the car battery. An amp specified to your speaker’s inputs will fully orchestrate your sound system with low bass beats and high frequency sounds.
Vehicle amplifiers can be used with any stereo, from factory stereos to after-market [...]