Mytek Brooklyn Dac plus running hot

My Mytek BB definitely runs quite warm to the touch, but nothing my fingers can't handle.  As for my Primaluna...

Yep, my original does as well. I've been tempted to open it up and see if something can be improved with heat sinks.

Haven't yet though!

I think it got a little better when I used an out-board DC power supply, which it supports.

Possibly adding larger isolation feet might help with air flow although probably look a little ridiculous on such a small unit.