One of the joys of a great system is often never noticed. Effortlessness. When the music just flows without strain, without drawing attention to itself, without making a fuss.
We notice when things are wrong. Our ears perk up at the hint of compression or distortion. We wince at the bright note.
Effortlessness is never noticed, yet I cannot think of a more important virtue in an audio system.
Sometimes it's what we don't notice that has the greatest value.