hard to pinpoint what it is about this unit but it is "on" always better then "off" AND you can compress the track to make it stand in the mix like it should, like more units do that but This one just makes me smile more. it adds rock i would say. I had an elysia (old series), fantastic, more precise, usable in every setting from to little to too much but it was too much of "just" a working tool where as this one adds the oempf while keeping the depth. Makes it sound another few percent more like i want it