Thank you for looking. This is a BOSS SE-50 stereo effects processor. Power has been confirmed. The LCD backlight turns on, but only the upper block is displayed and it does not display correctly. The display is also very faint. No display changes were confirmed by button operation. Sound output has not been tested. The exterior is in relatively clean condition for a used item. The genuine AC adapter and instruction manual are included. For the above reasons, this item is being sold as junk. Please consider it for repair or parts.