experiment with isolation??

There's plenty of power products out there that isolate equipment from other components, digital or otherwise. For digital, you can use something like a JPS Digital AC power cord that helps prevent noise generated from the component from getting back in to the AC to degrade the sound of other components. Couple that with a line conditioner that isolates the outlets and you have a pretty effective solution. I know PS Audio is a popular choice for this. If you call Cable Company they will be able to give you a lot of ideas as to what's available at all price levels. They'll also send it to you so that you can try it in your system first before you make a purchase.

I use a PS Audio P3 ac regenerator with spectacular results. Each outlet of the P3 is isolated from one another. The benefits of providing consistent, clean power cannot be understated.

My main power conditioner is a Furman REF20i and I have a separate PS Audio P600 for the digital gear.

One advantage the PS Audio P600 has with optional internal board is to adjust the AC power frequency from the standard 60Hz to anywhere from 60Hz up to 120Hz. I use mune at 110Hz.