I don't have any fancy outlets or filters, but I have a 1987 CD player, and I noticed that it interfered with my TV picture when it was on !!!!! I put a radio shack ferrite on the power cable, and the interference is greatly reduced. And guess what, it also sounds a lot better even though it's only used as a transport.
I think the power filtering for digital stuff is important not in providing the digital stuff with good power, but in preventing all the junk that the digital modulates back onto the power lines from getting into your analogue electronics.
I think the power filtering for digital stuff is important not in providing the digital stuff with good power, but in preventing all the junk that the digital modulates back onto the power lines from getting into your analogue electronics.