I have a few items, including my MacBook Pro, plugged into my mixing console. I noticed today when I tried to plug my iPhone in that it wasn't outputting any audio. I found, after searching around the mixer, that the Phantom Power had inadvertently been switched on at some point (no idea when). The laptop would output audio fine from 1/8th TRS to dual XLR, but not the iPhone (which didn't even play out of the headphone jack with Phantom Power on). Worst of all, the notebook was plugged and unplugged from the mixer several times while the phantom power was on. Did I hurt anything? It seems to be running fine, and audio out of both the MacBook Pro and iPhone sounds good.