Yes Rikki Trident has given a very good info about this controller. It's very useful for me, I use it to control the volume, brightness, reverb and resonance of all the style tracks and upper voices using different scenes. I discovered how much you can tweak the styles very easily and fast on a live situation. The buttons cannot mute a channel but you can use it to lower the channel's volume to zero.
Remember you need to run it through a computer and then to the arranger via Usb.

I'm thinking seriously about getting another one to control my second arranger but I don't know if the computer (Mediastation) can identify the two similar devices (which is which)

Victor

[This message has been edited by vagro (edited 10-16-2010).]