Does Wilson Sophia Sound good at low volumes?

The performance of a loudspeaker at low volumes has very little to do with the associated amplification, except for the amplifier distortion and noise levels. The Fletcher-Munson loudness curves are far more important. The speaker drivers may or may not produce much sound at low volume, depending on efficiency, moving mass, surround stiffness, etc. For example, an acoustic suspension mounted conventional cone woofer with a rubber surround may be very sluggish at low volume. These factors help explain why compression drivers, field coils, electrostats, plasma drivers, etc. perform more linearly at different volume levels and give much more detail at low levels.