I picked one up yesterday...the white one. I was hoping to use it for a few of our songs. I'm tuned to "Drop D"..and there are a few notes that are played on the detuned e string that I was hoping to get a sweep from way down low. Only the higher frequencies are effected. The low end is there but not actually effected...I've played with the volume and the Q setting to no avail. At this point I'm ready to take it back to the store. Does anyone have any suggestions??? I really need that low end to be effected as well to make the songs work the way I would like.