This is an Eleven Rack, an amp simulator from AVID with audio interface functionality. I haven't used it in a long time because I don't have opportunities to use music equipment. I have confirmed that it powers on and that sound comes out of the main output. I am unable to verify detailed specifications, such as whether it performs as specified. Please understand that this is a used item in its current condition. ・The product itself shown in the photos comes with a user guide. ・A power cable is included as a bonus. ・Please note that everything included is shown in the photos.