I would think that you want a bit more power with the C-1's than a Supernait will provide - 150 good solid-state watts. I'm absolutely not advocating running them with a high-powered amp (I think most high powered amps sound like shit), but a really good solid-state amp putting out around 150 watts would seem to be helpful with Dyns, which unfortunately require power (I think the C-1's are less efficient than my 3.3's were, and it's not just efficiency - power makes Dynaudios come alive).
Nothing against the Supernait - it's a super little piece - just not with this speaker, I wouldn't think.
Nothing against the Supernait - it's a super little piece - just not with this speaker, I wouldn't think.