I have eliminated the hum!
But not sure if this is a good setup
Overall Setup:
I am using two power outlets. One is located on the first floor of my house (in the family/listing room) and the other is directly below in the basement.
First Floor Connections:
Pre-amp, power amps, DAC, and CD transport all connected to a power strip that is connected to the outlet using a cheater plug (with the ground lifted).
Basement Connections:
A/V receiver, cable box, TV (TV is located on first floor), and dvd player all connected to a power conditioner and connected to power outlet (without a cheater).
What am I risking by using the cheater plug?