When I open it back up to put the paste on I'll give it the lick'n hiss test lol, I was thinking the heat sink is a bit lame but thinking about it the body of the machine is probably doing a good job of drawing some heat away, where the 3 resisters are clamped to the base of the stereo, it's pressed in/raised up, I presume to keep more distance from the table or surface the stereo is on so it doesn't cause any damage. That works fine I can't feel any heat transferred to the table, if I put my finger under the stereo directly where the transistors are, it's hot, very hot can probably leave my finger there for 5 seconds before it gets to hot to handle