Dirty Dog amps are warranted for 5 years on all parts and labor, except for tubes which carry a 90 day warranty. The warranty applies to the original owner and is not transferable. A dated sales receipt will establish coverage under this warranty. The warranty does not cover damage due to accident, abuse, neglect or improper use. The warranty does not cover amps that are modified and serviced by unauthorized parties. Shipping cost is the responsibility of the purchaser. Dirty Dog reserves the right to modify this warranty at its sole discretion.