If the amp works when you get it perfectly, it will continue to work. Buy a pristine example and it will last you a lifetime as long as it has room to breathe. There are a few people online if you search forums online that will be of assistance if your amp has trouble, but based on the amps design, nothing will go wrong provided you have a 20A outlet and sufficient ventilation and you arent driving anything like electrostats. It will even drive maggies, however I wouldnt try to power any large monsters with the amp.
