What makes a speaker sound great at low volume?


Most of the time I hear music at a low volume (wifey, apartment, ....). 

I am looking to upgrade my current speakers, but in my market scanning I would like to understand, if there are certain “metrics” to look for, before I start going to stores for listening. 

Any advice? 
mtraesbo
Everyone will throw their speakers in the pot”

 as well as I will.  
Energy rc -70’s
low volume is amazing!

try the Energy speakers.  
 Or,a,pair,of bookshelf speakers!
  
you need a receiver or a preamp for integrated amp with a”LOUDNESS”
Button. Read up on what’s called the Fletcher MunsonCurve
Since every recording has a different "sweet spot" you getting off your chair .