I found my new Oppo 103 blu ray player, when unplugged the hum dropped down to almost nothing. Still could hear it but when any sound was turned on, it was impossible to hear, I could live with it.

I called Oppo and asked then if I could use a 3 to 2 prong plug adapter, they said yes, the body is grounded so you can. put it on and most of the hum is gone. I still play around with it from time to time seeing if I could make it better, but like i said, i can live with this.

Love the Oppo, Outlaw, Marantz combo, sound is killer.

Thanks.