@Guido�� ...for me it's pretty much just effect. They only use them part of the time. Here's a video I took from Pittsburgh Thursday night. It's from the balcony and the stage is so small it's a good shot of both drums. I'm not expecting you to like the song just watch the first 2 or 3 minutes. If you do watch the whole song the second part of it is the best.(to me). The song is "43/Kill Tomorrow". This is one of my (more)�favorite songs from these guys. (my last video of these two shows)