Finally got my new spider up and running, buuuut... There's a whistle at exactly 14,386Hz coming from the digital (and analog!) 2-bus that is killing my ears!! It's not loud, in fact it's buried somewhat by the unit's inherent noise. But it's still piercing! Is there anyone out there that's used this unit and had this problem before?? Here's a sample of the noise: Spider Noise Sample It isn't on ANY of the other outputs. Just the 2-bus. Hellllllp!!