Hi, I have a bit of a mystery on my hands. I have setup a cheapie powered mic and the input works fine. I am able to record with it. As soon as I setup my MXL 770 that requires phantom power, I am not able to get it to work. My friend tested it at his studio and it worked fine. I have put it through a preamp (using the phantom power on that) and plugged that into my firebox to see if the phantom power on my firebox was shot, but that didn't work. All of the preferences/settings are correct as far as I know because I am able to get audio with a cheapy mic I have. My setup is imac 2.0, logic audio pro 8.0.1, Firebox, MXL 770 mic. Any ideas?? Let me know if you need further info. Thanks in advance for any help!