I tested it and it doesn't appear that the high pitched noise gets picked up during recording. iPod making high pitched buzzing noise More Less. When I pulled the plug, the noise went away after 10 seconds. This happens when recording with things plugged in and with nothing plugged in with all possible configurations of the box (phantom power, monitoring, gain, line level, etc.) You need to boot into your bios and look under tabs such as power management and somewhere depending on who you motherboard is (and I say this because every motherboard maker has a totally different bios desktop.
