If it is like my Sunfire "Signiture," yes you can.
There are stereo RCA jacks for "Line In" inputs from your preamp and "High Pass" outputs to run back to your amp.
BTW, the best/most important thing you can do is to remove the amp from the cabinet and give it its own ventilated cabinet and make a block-off plate for the speaker. I just made the amp cabinet from four pieces of 1" x 4" wood with 1/2" mesh wire on the back and some perpendicular metal straps along the bottom with rubber bumpers for feet so it sits upright. I put a speaker wire terminal cup in the bottom piece of wood. The speaker block off plate is particle board painted black with a speaker wire terminal cup added.
I've literally had mine shake itself to death, twice, until I did this. The electronic components literally shake themselves apart from the inside. You can't get these serviced anymore, so you need to take every precaution.
Now there is more cabinet volume, the amp doesn't get shaken, and the back of my amp enclosure is open mesh for better ventilation/cooling. The amp is actually located in my bedroom closet on the other side of the wall from the living room, with a piece of heavy wire coming through the wall and running under the baseboard to the corner of the living room. I've not had a problem since.