Any input on upgrading power cord on the 950. Thinking of purchasing the powerline 400 from Monster or the Raymond cables they are selling on ebay. I notice however that the 950 does not have a ground wire. Also I still have a problem with hum on my system. I ran 6 dedicated 12 ga lines with hospital grade recepticals.Still have the hum. Told by a hi-end store to remove all of my bare ground wires from my box.Said I have a ground loop problem.