It IS impressive. They were playing around with it in front of us and it would seamlessly dim and brighten up from (depending on model) 1% to 100%. Very flexible programming. All kinds of features. But it's PRICEY and Quality wasn't sure at the time exactly how to hook it up to other fixtures (it's got 4 wires--a ground, 2 hot and one????) Again, I think the best bang for the buck was the dual ballast units, maybe 1100 or so wholesale (could be wrong, but yes it's REALLY, REALLY expensive) but the dual units don't dim all the way down.