I've made a substantial improvement in black background, all aspects of sound stage and mid- hi- registers when I dumped isolation transformers and installed a regenerator. I was amazed at the improvement of the system. The single best addition to my system for the money. The addition of an anticable power cord removed doubt about current needs. I have a lot of electronics on in the house frequently, dimmers, wireless equipment and with all xlr connectors and good shielding the regenerator cleaned the AC noise up while giving the constant 121 v I needed. This is not an ad, just my experience.
Try this.
My home computer is in a different room and on a different circuit than my audio system. When I turn off the computer, the audio system sounds better. And my system is already tweaked out with good cabling and power conditioners. Even the LPS for my modem/router has a power conditioner on it.
The next experiment was to keep the computer on - but, temporarily disconnect the WiFi connection - via the control app. The results were almost as good as turning off the computer. I primarily stream Tidal. Since I rarely use the CD transport, I powered it down also. Again, another improvement.
It appears that digitius is quite proficient at polluting any & all circuits. If somebody else at home is watching Netflix or playing an online video game, it could be affecting the audio rig. YMMV
The next experiment was to keep the computer on - but, temporarily disconnect the WiFi connection - via the control app. The results were almost as good as turning off the computer. I primarily stream Tidal. Since I rarely use the CD transport, I powered it down also. Again, another improvement.
It appears that digitius is quite proficient at polluting any & all circuits. If somebody else at home is watching Netflix or playing an online video game, it could be affecting the audio rig. YMMV