As a bit of an update, after a couple of resets and formatting the cards the noise disappeared, but eventually came back. Also it seems that the auto fader function has randomly stopped working on a couple of inputs (1+2)
I have been in contact with the manufacture who are investigating and i updated with the fresh news of more problems today. At no point was i expecting anyone here to "fix" my problems i just wanted to know from users if you've experienced similar gremlins. It was one of my biggest fears investing in software based equipment, so its a little disappointing.
The actual build quality, feel, functionality design is great, just not so much for its reliability out of the box, as rado said, its going to be a long trip for the unit if its something major.
hopefully its something and nothing, and preferably a bit of user based finger trouble, id much prefer it to be something silly that I'm doing rather than an unreliable unit.