Hi With my experience with warrantys you need a receipt and
It only applies to the original buyer and the store were the item
Was purchased .
This item was bought from an authorized dealer, intuitive systems, then brought back and sold to me as a consignment sale. It has never been registered with marantz. Nothing I've read for any marantz warranty suggests you need the original reciept however, you do need the name of the authorized dealer, the date of purchase and the serial number. I've emailed Brian of intuitive systems and he has sent me this information.