Pro-Ject Wallmount It 1 Turntable Wall-Mount Shelf - Black

A somewhat radical, but effective step would be to hang a turntable platform from the wall. That way the turntable would be isolated from the speakers and also from footfall and feedback via the floor boards. There do exist ready-made platforms for this, but you could also make your own (make sure it is horizontal): https://www.reddit.com/r/turntables/comments/ua55pl/wall_mounted_isolation_platform/ https://www.amazon.com/Pro-Ject-Wallmount-Turntable-Wall-Mount-Shelf/dp/B07XP9NVKF