It comes with two speakers, that are attached with separate R/L +/- speakers wires. You can add more speakers the same way I'm sure, but be aware that the speakers are matched to the system. I'm not sure how many ohms the system speakers run on, and that's critically important to the efficiency and volume of sound. Remember 300 Watt RMS doesn't necessarily mean it can drive large speakers, chances are you need very efficient speakers with a low ohm rating to work well with this system. It's doable, but you'll have to do some homework to make it sound good.