RAT effector with three controls: Distortion, Filter, and Volume. - Model: RAT - Controls: Distortion, Filter, Volume - Bottom: Anti-slip rubber feet Thank you for viewing. I purchased this about 10 years ago. I used it indoors for a while, and then it was stored in a box. Operation has been confirmed. I think it's relatively clean, but there is one dent. Please understand that this is a used item before purchasing.