Solved this issue long ago, even tho' a SS kinda guy....
'Puter fans....Quiet, turns on with the amp. No electrical racket noticed, low power draw. Use it on the stand-alone units, anything I want to remain cool under pressure.....
For you 'tube types', a means of making use of that heat when winter returns...unless global warming makes that whole issue moot... ;)
(Keeps the dust out, too...*G*)
(( ....that, and the 'current crop' .... "To pun....or not to pun....isn't a question...😏..." even has the ability to give y'all a 'light show' in the comfy Barcalounger of your 'phile foxhole....))
Ludwig w/Lights! Yow, so 21st Cen.....*L*