With my Marantz SR-8300, I have yet to see the cooling fan come on. when I first got it in January, I drove the s**t out of it to give it a good run in - I was in my family room with hearing protectors on and the M60s and the Marantz pumping out almost 100 dB of sound. Doesn't run hot at all.

Sean



Exaudio ergo cogito ergo sum