I don't have the new app controlled version but my two K7 V3 140s and 75 and the K7 Pro II 90 don't get super hot.My only primary concern is the reports of a lot of heat from the power brick. I have fans galore so i guess i could point a fan at them but that's just another cord added to the already massive collection i have. Can anyone here testify as to the heat these can generate? is it concerning?