Lowest you can go with the volume before the screen is just a blank black screen. (Lowest amount of effects)
screen and stage lights lighting up on max volume.
Fun fact: your music volume is connected to the black screen in the retro rink den. Here's pictures of how much the screen lights up based on volume (anything lower than the lowest volume setting results in the screen just being a blank black screen:
Another fun fact: The way the screen lights up varies on what song is selecting for your den. (so depending on the song some music will cause the screen to stay blank even on max volume)