My latest Corelli discovery.
My home desktop computer is in another room - definitely on a different circuit than my audio rig. The computer is on 24/7 – along with the printer, powered speakers & assorted accessories. All the devices are plugged into a cheap power strip. While listening to music in the other room, the desktop computer is simply in the idle mode – no apps are running.
Out of curiosity, I plugged the Corelli into the same wall duplex outlet as the power strip. An OMG moment. The sound stage exploded in width & depth. Everything improved significantly! And this is with several of my audio components already having their own dedicated power conditioning. A side benefit is that my computer is processing noticeably faster.
It appears that the digital nasties are contaminating and polluting all of the circuits. Turning off any computer during serious listening would be a good idea.
As Roseanne Roseannadanna would say: "It’s always something - if it ain’t one thing it’s another."