Mains noise

[GuillaumeB]

Unfortunately I can't isolate my D200 from my source components without putting in a new dedicated spur from the mains box.

But, I feel this would be only half the solution as there are many components that share the power circuit in my "listening room". And all of them, I suspect are polluting the power.
Oppo 95 and Antipodes DX have linear power supplies but I think that they also have smps on board. Subwoofer has class D amplification. TV (plasma) is probably a major culprit as is  
my wall wart powered router. Computer, printer and 2 x 12v motors powering the reclining sections of a sofa. 

It would seem that I have a "perfect storm" of noise pollution affecting any semblance of clean power.

In this, I know that I would be far from alone.

I wish I had access to one of those mains analysers or if there was a service that could give me a power audit.

Having said all this, I am still getting great sound out of my system.
But I feel that it could be so much better if I could get my power issues sorted.

Interestingly enough the new Original d'Atelier features a new power filter board:

A new power filter input board has been developed. 

It is based on a new conduction EMI (electromagnetic interference) filter. Have fewer, but better performance of the magnetic element, the use of new high-quality alloy made. This improvement has laid the ability to filter unwanted signal ground power. Original d'Atelier is more separated from the main network power supply noise than ever.

 Guillaume