(UTC) 

 : It might have been cleaned up some. There's still a stray sentence here or there. This article would be much more complete if the various features were mentioned in context of how they compare to competitors' features, and if there were more discussion of how these fit into the industry as a whole. It's as though the article ignores that there are any other electronic drums at all, and that's a subtle NPOV issue. Also, there just have to be more references, and they have to come from places other than Roland literature. There are a lot of articles in magazines such as Modern Drummer that would make good sources.   04:08, 28 April 2011