I never ever heard anything about it having power issues. I do remember some people awhile ago saying something about how all the sudden they're audio 8 stopped working, and I really cant remember the issue, but I wanna say it had to do w/ the firmware and if it was manufactured before a certain time period there was nothing that could be done. I think each time, NI gave them a deal on a new A6/A10 because of it. Honestly don't know if this is the case, and I obviously don't remember the exact problem all that well, but I do remember the problem being very similar.