Bang & Olufsen Pre-Owned Warranty New Bang & Olufsen products purchased from an authorized Bang & Olufsen dealer are covered by a warranty. The warranty on Bang & Olufsen products is 36 months, from the date they are first sold at retail. The warranty is transferable between owners, and follows the product. This means that if you purchase a pre-owned Bang & Olufsen product, you will receive the remaining warranty, if any. It is not possible to extend warranties beyond the standard 36 months provided by Bang & Olufsen. For more details about the Bang & Olufsen warranty please click the link here, Bang & Olufsen Warranty.