ATI is a great company and they stand behind their products, besides they are the OEM for a few high end companies which I am sure that you are aware of. You made a good choice choosing ATI since there are so many high end amps out there and you could have paid 3 or 4 fold for the same amp, which ATI actually makes. In other words you got your great amps streight from the source. Besides they know where every amp goes, they controll these amps like they're golden nuggets.