I have had a Delta 1010 LT and Mackie 1604 for a while now and I am getting this odd sort of artifact on recordings. It's very intermittent, I can't track it down to any particular event or series of events. It is what I would describe as digital distortion on the peaks of a track. Almost like a "fizz". I will try to throw up a sample of this. It has done this to me on different PCs so I really doubt that it's anything to do with IRQs or system resources. Does it with different DAWs. Different houses to I don't think it's an electrical/grounding issue. The only thing that has been consistent is the delta 1010 and the mackie. Anyone have any ideas? I'm about ready to throw the whole rig in the trash....it's useless at this point.