Play Joe Walsh tunes.no idea what I'd use it for, but it'd be fun to play with

This one is all self-contained. I uses the MXR Distortion III circuit for overdrive and has it's own amp. With gain dimed and the volume cranked pretty good, this thing is epic. They weren't kidding about it being almost synth-like.HNVBD!
So this one doesn't need to be plugged into the speaker output as it is self contained?