Alpine CDA-105 help please!?

Will the Alpine CDA-105 head unit allow me to control my subs separately from my speakers? I want to install new subs and an amp, but i don't ALWAYS want them hitting so hard that i cant hear anything else. Would this head unit allow me to turn the subs up and down separately from my speakers? The speakers are only factory installed, as i don't have enough money at the moment to replace them also.