(a) contact the authorized Aragon dealer from which you purchased this product or (b) call INDY AUDIO LABS at 1-866-559- 5113 (toll free) or (c) email INDY AUDIO LABS support at support@ indyaudiolabs.com. If you choose to call INDY AUDIO LABS directly we strongly suggest that you choose the technical support option as the majority of customer problems can be solved over the phone.