Yes, as we all know, or have been brainwashed with, heat is the "enemy" of everything audio. But in reality--are we "right"? I know, I know, the lower the operating temperature, the better--I drank the Kool-Aid too. Some things just don't sound good "cold". I have an all tube-ARC rig that doesn't sound good until it gets "warmed up". I also have an all Krell SS rig (pure Class A) that doesn't perform up to its potential until the amps have been on for at least a half hour, and you could cook eggs on them (at idle). Sure, proper ventilation is an issue, but the overall heat level--is it really that big of a deal? Are we trying way too hard to make something run at room temperature (with the addition of fans, etc.), and defeating the original intended design? IDK--tell me.