Great unit. Quiet. With the compression set low and volume high, it is very neutral sounding. Turn the comp up and it adds a nice chime to the top end. I have the Tumbleweed version which Montez told me is similar to the Mirage but uses an optical component to control the attack time. Basically, this compresor does not alter attack in any way I notice. Even with the comp turned high, you pluck a note and the attack is unaffected...then the compression comes on and you get nice even sustain. I don't know how well clips can illustrate this, but I will try this weekend. I've tried a number of comps, this has been the only one I've liked as much as the BJF Pine Green Comp. Nice finish too. The special edition tumble weeds are gone, but he is working on getting the standard version available to dealers soon. I want to try out the regular Mirage comp as well. I should have listen to Stu at Fatsound years ago when he recommended these to me.