Guyatone Overdrive Sonic PS-015. This is a product from the 80s, so it's vintage and has some minor scratches, but no major damage. I've checked the operation with batteries as a novice, but since it's old, please understand that the appearance, contacts, and crackling are basically non-returnable/non-refundable. The main unit only. I will pack it carefully and ship it. Immediate purchase is welcome. Manufacturer: I'm borrowing BOSS for the category.