LINE6 LIQUA-FLANGE flanger. This item was purchased used, but I believe there are no major scratches or stains on the exterior. (There are traces of tape on the back) I haven't used it much, so I confirmed the power-on operation (effect operation) when listing it, but since it is used, please understand that it is non-refundable and non-returnable. *I am also listing other effectors, so please take a look if you like.