What can I hook up to this head unit? (pics inside)

[topslop1]

Okay, new to the audio scene. Thinking of hooking up a couple of subs with an amp in the trunk of my car. Can it be done with a head unit such as this? Also, if it can be done - what is a medium quality / high quality set up? Is buying used off of craigslist a good idea or not? What kind of stuff should I look for and what kind of stuff should I avoid?

View attachment 26532032

Click to read more...