[thxgoon]

Looks like I"m a little late on this thread but I think the amp would be fine. It's a pro amp that is designed to be used on the road in harsh conditions and even if the ambient temps were warm it is hardly asked for much output. If it gets itself too hot it will shut down. Also, I assume that if it is in the garage it would be constantly powered on which in the winter should generate enough heat to keep the amp at room temp if not warmer. Have you checked the users manual? Usually it'll list a range of operating conditions.