Roland controllers in all shapes and sizesRoland controllers do come in all shapes and sizes. They can look just like a standard keyboard, or shaped like boxes with sliders, knobs, buttons and more. Controllers do just that ... control other things ... hardware or software. They have no sounds of their own. That's how you can always tell the difference. If it's shaped like a keyboard but you can't play it and hear sound through speakers or headphones, it's a controller. Confused? Just give us a call at 928.284.1619.We are controller experts. We can help you pick the right one for your needs.