Hello,

  If you purchased your amp new within the past year, the only requisite is to make a copy of your purchase receipt. In order for our Authorized Service Centers to push the repair as warranty they'll need a copy of your receipt for warranty claim submission. We go by the date of new product purchase; hence the 1 year period starts on that date present on your receipt.

  If you can get a copy of receipt and your amp to an ASC and are within the time period, you're all set!

  Regards,

  L6Perry

P.S. Authorized Line 6 Service Center finder: http://line6.com/support/serviceCenters/