Sorry for very big delay, I somehow managed to miss your reply…
Yes, I’ve tried to unplug it. I don’t notice differences immediately. But they are noticeable after prolonged listening. When everything is unplugged except switch and Atom, music becomes more enjoyable and clearer. Of course it can be partially placebo. But I want to be sure, that Atom gets clean power and clean Ethernet signal as much as possible. At least on a theoretical level.
I’ve made a detailed plan of my connection setup.
As you can see, all equipment is connected to each other via Ethernet, HDMI, and power lines. So some noise from cheap power supplies and from coax cable should really reach Atom. And I want to avoid that.
So first of all I want to deal with cheap power supplies. Maybe to replace them to linear. TV box power supply is the worst and cheapest one. What could be possible options for that? The next step would be to isolate coax cable, but I’m not sure how to do that. I’ve read somewhere that coax cables are usually extremely noisy and should be avoided in hi-fi connections as much as possible.
As for switch I’m going to replace it with AQVOX audiophile switch. It has already optimized high quality power supply.
