Heat in class A equipment

At least they are being honest 

That might be true for some but i have owned my McIntosh MC2300 for over 30 years!

Just my oldest item but i know what you mean.

I did start measuring with a IR thermometer and with the equipment on at low volume for about an hour I was getting these readings. 

Mc452 was about 94 at the heatsink and 89 at the center. 

JC5 was 102 at the heatsink and 92 at the center. 

Assuming the components are a bit hotter then the actual heatsink,  this is not an issue at low volume. 

However there is a thing called thermal runaway and if you don't provide enough space around your equipment that could happen. 

Hi XCool

I do like that cooling device and at only 25db you can't hear that at all. 

Hi Millercarbon

I have seen many of your posts and they are always well thought out.  Not sure about your comment about IR thermometers but they have lots of uses in both automotive and many electrical purposes.  A good one will only cost about $100 and lots of useful purposes. 

Always thanks for your insights and audio on!

Hi fiesta

Yes in F 

hey are warm but not too hot to touch. Over 120 F starts getting really warm to the touch

Thanks to all for their opinions and very useful perspectives. 

I did have my components in a cabinet with open back and front and nothing is stacked. 

I can now stop thinking about this matter 

. Thanks to everyone.