I just received my Mini GaN 5 this morning. Looking in through the vent holes in the top, the heatsinks look nothing like this. Now they appear to be screwed down tight on the top of the circuit board. I don't want to remove the screws from the bottom as I might be sending it back......But if I keep it, the top will come off and we'll see whats up.....BTW, First Impression?....BALLS with a capital B!! This think has some amazing power. Back when I did sound reinforcement for Rock and Roll bands, this would have been so much nicer than lugging around a dozen or more Crown DC300A amplifiers....