High gain + Max volume barely enough to power it

my goodness, had no idea an extra 170 ohms would chew through power like that. By that metric, avoid the Atom then for sure. But then again I listen to music at quite low levels compared to most folks (even when I wass a kid I had this sort of OCD of avoiding hearing damage as much I can, it was ingrained into me while seeing people on the subways with volume so loud on their listening devices, I could hear the song fully playing 2 meters away on top of all the noise of a train cart).