When using Garageband, if I select the direct audio input, i get a fuzz - even when the instrument isn't connected. If I use amp modeling with any sort of gain, it really fuzzes. Here is a link to an mp3 i exported from Garageband - it is just a recording of the sound created if the input is switched to the built in input - no guitar attached, with amp simulation on. http://www.mediafire.com/?9gqlvjyjdvg I have been recording with my guitar straight into the Mac. The noise is always there, even if i record my guitar clean then change the amp simulation, it amplifies the fuzz sound. If there is no way to fix this, I'll have to send it back for repair as it is absolutely vital i have audio input. Any ideas?