Cool it!

I use a single Cooler Guys fan 10” above PrimaLuma HP with KT120s. Can’t here it even when close. 
Had another kind but it made some noise. 

I have a krell ksa 100 with an internal fan. It gets hot but never to the touch. I wouldn’t worry about cooling it. They were designed to run warm. Btw, mine sounds best after 1/2hr. 100 wpc pure class A. After 25yrs still sounds fantastic. 

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. 🇦🇺