I need speakers for low volume listening -

This subject comes up regularly, so you may want to check past discussions. Quad electrostatics usually get the most votes.

I have much experience with speakers that sound good at lower volumes.
The Harbeths as mentioned are good.
Also I would add, not knowing budget:

Kudos Cardea C10 or possibly C1
Joseph Auduio RM XL or RM 7
Linn Tukan or Katans
Merlin TSM
Neat Acoustics
Audio Note ANK

Have you considered headphones?

While there are many good suggestions here, for truly good lower level listening, you need either a speaker that will allow you to adjust the tweeter, midrange, and woofer levels, or you need a good quality equalizer.

This is due to Fletcher-Munson which cannot be ignored if you want quality listening at low levels. Highs and Bass will need a slight boost for the frequency response to be "heard" accurately.

Nearfield listening will also help, but not like adjusting the speaker, or quality equalization.

Bose Radio Dude.