Great little pedal, I needed it mainly for the Rotary, but the other two sounds are also surprisingly good. It minimally colors the sound, takes away from its dynamics and openness, but e.g. with the Rotary, the slightly Vintage sound pushed by a Tubescremer was completely fine for me. The design is ok, it looks like a solid piece, the only thing I don't like is that the big SPEED button moves quite easily, and it moves easily with your foot when switching. It's not that important, but it has a very nice golden color, it doesn't stand out from the picture :-)