The sounds are nice enough. Three types of tremolo, differently choppy.
The vollume knob is totally useless. I need to put it at maximum just to be at unity. Why have it on, then? In care i want tremolo below unity???
The more "amp like" tremolo isn't really saturated. It's just average. The harmonic trem is pretty sounding.
I own a couple of other tremolos, and honestly, I don't feel i can recommend this one. It's okay, but you can find better in the same price range, or even cheaper.