Don’t listen to these idiots trying to turn this into a mono amp, this is equivalent if not better than a head unit amplifier. Don’t expect to much of a boost over what your built in car stereo can do, this is not the unit for that. You want more power to your more expensive cabin speakers, spend more. You want to rip out your head unit and replace it with a tablet and need a new line amplifying source, get this. Cheap, and loud enough period.