After exclusively using Carvin gear for over 3 yrs. I've finally have run into a problem with my BX500 bass head that I've owned since early Feb. 09'. It's shutting down and going into protect mode for about 5 seconds then coming back on. I called Mike the manager of the Carvin Sacramento store and explained my situation to him. He put in a phone call to his superiors and they told him to swap me out a brand new BX500 - can't beat that. Carvin has taken very good care of me over the last 3 yrs and I just wanted to share this with everyone.