I'm surprised by how great this thing sounds. Really smooth and liquid, adding to and augmenting the tone instead of just creating a woosh of idiotic jet noise over your clean tone. One of my favorite features is the EVH button, which is a preset that bypasses the knobs... which is actually, a really great, traditional flanger sound. I have the knobs dialed in to a fast leslie/phaser sound, and then use the EVH button to switch to a more traditional flanger tone. It's great! It isn't really much use with my Musket, though. After it, it overemphasizes the filter sweep and it sounds terrible. Before it, it's almost too subtle but on my faster setting I can get a kind of vibrato effect on longer sustained notes, so I run it first. The only real complaint is having to use an 18v power supply... which I'm only complaining about because companies like FEA have figured out a way around that... but I'm perfectly willing to have to deal with that small inconvenience for the great tone, headroom, and frequency response I'm getting from this thing.