Well I got the replacement receiver and set it up last night. It appears the clicking is normal for this model and how the receiver handles changes in impedance/power draw I'm guessing. I suppose I will have to decide if I want to keep this or not as it mostly happens when listening to music pretty loud. I find it odd that this clicking isn't mentioned in reviews of the receiver. At least with Costco's return policy I have time to decide as I can technically return this whenever as its not on their 90 day return list of items.
Actually nevermind, I was reading more reviews and I found some about the clicking sound the receiver makes, and that their other model of Onkyo does this same thing unless the impedance is changed to 4ohms.
