Dynaudio considers the Focus 110 to be a 4 ohm speaker with a sensitivity of 85 DB. This is what the NRC measurements done for Soundstage indicate, as well. I haven't heard this model but the measurements are quite good for a small monitor speaker.

http://www.soundstagenetwork.com/mea...dio_focus_110/

Dynaudios typically are a fairly tough drive, being both relatively insensitive and fairly low impedance. According to Hi-Fi Choice, the Rotel RA-1062 integrated amp is quite conservatively rated. Most significant here is that they measured 145 watts into 4 ohms, so I would expect you would have no difficulty using it with the Focus 110.

http://www.rotel.com/content/reviews...wards-2003.pdf