Prime 2 Internal Cooling Fan

This question may be more for the Denon team, but does anybody know if the Prime 2 has a built in cooling fan(s)? And if so do you know how many? Do they pull air in or blow out? I ask because since I’ve been using the Prime 2 it gets very warm underneath. I want to keep the unit cool (like a laptop) by installing a small computer rack fan near one of the cooling vents on the Prime 2 Would you recommend the fan to pull the warm air out or blow cool air in? This of course if it doesn’t already have a built in fan. Thanks!