The Dynaudio Focus 110a should be fine for rock. That being said I have a pair of the C1 signatures (just upgraded from the original C1) and both do well for rock with me. Some Dyn owners will say the focus and contour line is better suited for rock and heavy metal.
Good choice but try to audition them (especially in you home if at all possible) and that way you will know.
Good choice but try to audition them (especially in you home if at all possible) and that way you will know.