speakers for low level listening

I am looking for some speakers to use when listening at night or any other time I dont want to disturb others. My main speakers are PSB Stratus Gold, but they don't quite do what I want when listening at low levels. I'd like something that is still dynamic at low levels, something that still gets you going, not something that sounds like background muzak. Stand mount fine.
I listen exclusively to vinyl, system is on this site. Any recommendations in the under 5k range?