My coffee table is blocking the display on my surround sound receiver, so I don't know if the volume is set to an aesthetically pleasing number.

Seriously, it could be set to something completely uncivilized like 23.5. I can't enjoy the digital music that streams to my system through the air if there's even a slight chance that the sound level isn't a number divisible by 5 or 2 (bonus for being divisible by both).