This offer is valid on any New (used and refurbished items not eligible) WKB37 purchased from an Authorized U.S. retailer between September 15th, 2018 to October 15th, 2018. This promotion cannot be combined with any other offers. Copies of original receipt showing date of sale of New product must be submitted by November 15th, 2018. Retain original receipts for your records. Only registrations completed via this site will be honored. Name on registration must match the name on the receipt. Must be 18 years or older and reside in the U.S. Offer is valid in the U.S. territory only. Void where prohibited by law. Offer subject to purchase verification and processed at the sole discretion of Korg USA, Inc.; 316 South Service Road, Melville, NY 11747. If you have any questions about the status of a rebate please email customerservice@korgusa.com