How much power does it make?

It delivers 150 watts RMS to each of two channels, or 480 watts RMS total when the channels are bridged for a subwoofer. Peak ratings are higher, but RMS is the number that matters for matching speakers.

Can I use it with my factory radio?

Yes. It has speaker-level inputs, so it takes the signal from a factory head unit that has no preamp outputs. It also turns on automatically when it senses that signal.

Can it run a subwoofer?

Yes. Bridge the two channels into one output and it drives a single subwoofer at 480 watts RMS. Check that the subwoofer's impedance is safe for bridged operation.

Does it have a built-in crossover?

It has basic filtering for speaker and subwoofer use, but the tuning is limited compared with larger multi-channel amps. Plan on setting gains carefully.

What else do I need to install it?

You need a power wire with an inline fuse, a ground wire, speaker wire and RCA or speaker-level signal cables. A wiring kit sized for the amp's current draw makes the job easier.