I have had this unit since it was introduced and I like what I heard in the videos. The best part is it still was that good in person. This can go from mild to wild with NO low end loss. By far the best unit I have used among the usual suspects in this category. The depth function is great to add back low end that can be lost at higher gain levels and the switch lets you select the frequency you want affected 300/600. I know there are v 2.0 & 3.0 but the original is amazing if you can find one.