When I use the analog outputs with my Fireface UFX I get a lot of noise that appears to be generated by my laptop (sonica). When I unplug the power supply to the laptop it goes away. I would just blame it on the computer but when I used an onyx 400f I didn't have this problem. The balanced outputs seem fine. Everything is plugged in to a Furman Power conditioner. Ideas? Repalcing all my unbalanced gear is not an option, nor is replacing the laptop.