Yes, all the displays turn off and I listen in a fully dark room, only a few power lights.
Monitors and subs are such a great way to go, but they need to be set up just right. I’m getting most of the sound from the giant Uber expensive Raidho towers at a fraction of the cost.
I have the plastic lid for the ‘table. A nice light form fitting cover. I’ve had no need for additional isolation. The Pro-ject sits on magnetic feet and the oak cabinet is rock solid with a ton of weight from the amps and P15 anchoring it down. No issues at all.