Purchased over 10 years ago. It's an old item, so there are scratches and dirt from use. Operation has been confirmed with a power supply. - Model Name: HOT CAKE XLF - Type: Bass Effect Pedal - Adjustment Knobs: LEVEL, DRIVE, TONE - Manufacturer: HUMAN GEAR CO., INC. - Connectors: INPUT, OUTPUT, DC Jack Used ones are not often available, so take this opportunity.