You will have no issues driving the Dynaudio Confidence C1 with the Octave integrated amplifier. In fact, Octave has been using Dynaudio speakers to demo their products in many of the German audio shows I have attended. See this link for a review of one of their products:
http://www.sixmoons.com/audioreviews/octave/octave_4.html
Compared to solid state amps or even other tube amps for that matter, the Octave products will showcase their ability to convey the emotion of the music in an ejoyable manner with a unique quietness. I have heard some top line Mark Levinsons and Krells not sound as good as my Octaves (MRE 130).
I even took my Octave MRE 130's to a Mac dealer to compare to the MC501's, the Octave won hands down, driving the same speakers, the B&W N800's, that I own at home. Many suggest that you might need a lot of power, watts or current (amps) to drive speakers with difficult loads, below 4 ohms. Based on my experience, the Octaves can drive almost anything you plug into them. Granted the V70 only has 75 watts per channel with 80 watt surge capability, but they will drive a 2 ohm load easily.
I am pretty amazed that the Octave products are built so robustly and are very easy to adjust tube bias. I mean, anyone can adjust the bias for each tube on an Octave amp in a matter of minutes with just a screwdriver, while it is on.
The only way for you to really know if you like them is to listen to them and make that decision on your own.
Ciao,
Audioquest4life