dear technicians, I have made a recording with a Presonus Firebox on a Mac with Cubase. At the 2nd day there was a terrible distortion at once. It came in after 15min of recording a voice; and it stayed all day long. I heard it at the end of the day, while backing-up the recordings. A sample can be heard here: file in WAV extension or file in AIFF extension Does anybody know this sound, or has an idea how to fix it?? Maybe a plugin for fixing vinyl or so..... Many thanks in advance!!