Is this too hot for my preamp? What should I do?

@n80 when I had my equipment in an enclosed rack, back open, I used 2 units of 2 fans each with temp control set at 90 farenheit. They ran pretty constantly and kept the temp inside the cabinet with equipment running at between 114 ad 124 farenheit depending on how hard the amps were driven. Amps had 3" of breathing room around each and we’re seperate by shelves. 1 2 fan unit for each amp.
Worked quite well for me fans were hardly noticeable at full speed and impossible to notice at slower speed. The fans were variable controlled by a temp sensor control unit. Had it like that for years, never had a problem. Hope this helps

You also want to separate the chassis’ from each other to prevent self-generated internal vibrations from each to pollute the sound of the others.

I had several repairs related to "heat x time". I then bought two Noctua NF-A14 PWM fans in a data shop, connected them to a 4.5 volt transformer, and placed them behind my hottest components. I don't hear them even from in front of the rack. I turn them on when I notice things are getting hot in the rack. The top plate of my preamp cooled down 12 - 16 degrees Celsius. Total cost, ca $90.

Thanks for all the input guys. I need to rethink my setup a little :)