I dont heard the c1 but heard focus adn contour line, And dont like a sound, better for me sounds micron and craft, sp25 like too.
Dali herd that model - and wery impressed by a soundstage and treble, bass not boomy and do not go low.
Intrestin to heard where is the better resolution and soundstage - in c1 or Dali 25LE
