Stereo questions...

no. It has one pair of RCAs. Red and white. That's all. But it has four channels of high level outs. You know, just speaker wires.
Well if you pair it up and run it direct for two ways that are low wattage like some of the entry level jbl's they're reasonably priced but loud and clean sounding then you can run an amp to the sub if you care to or you could just run it to a 4-channel and Power for two ways on that