Cool it!

Definitely the acinfinity component fan systems. These are sized to match the size of a typical component and have various models that blow the hot air to the front or back, top or bottom of the amp and are temp activated or remotely triggered by the temp of an adjacent component. Really good equipment. 🇦🇺

amg56, Thank you - that is exactly what I was looking for and the price is low, for nicely finished product like that:

https://www.acinfinity.com/receiver-amp-cooling-fans/

Kijanki, they are the ones. I have 3, 2 in 1 rack and 1 in another. I got the ones with the lcd display, the T8 series. All are quiet and components are cool. My region in Aus can get to 43C but we average 34C over summer (32C inside). Components never overheat. 🇦🇺

Which Krell do you have. I have the KSA-80B and while it runs warm, it does not get hot. Perhaps refer to the owners manual and see what they reccomend for a temp. Does it trip the fail safe? I drive my one Ohm Apogee Scintillas and I have never tripped the saftey. It might be that your amplifier needs to have its bias adjusted, or perhaps its time for a tune up. I had mine rebuilt at the Factory about a year ago. You might also call Customer Service at Krell and ask them.  

Mr.bailyhill,
It's a pandemic project and my first experience with class A amps.
I aquired the Krell FBP 400cx stereo amplifier. I'm in the process of  preparing my electrical requirements for proper placement and operation. All this before I enjoy blowing my walls out. I like to take informed steps  from  everyday users. 

Thank You for your input! Be well..

Put the amp in a refrigerator, drill holes for the cables and power cord, and place the refrigerator on springs. Problem solved! 🤗