selection of amp to drive DYNAUDIO C1

Used Musical Fidelity Nu-Vista M3 integrated amp.

Thanks thu!
But I prefer something with balance input and newer amp!

Plinius 102 if you like a warmer sound. I have heard the 9200 as well, though the power ratings look good they do not have sufficient drive and control for the C1.
Go for the Pass if you want something more transparent and dynamic, depends on your source and preamp actually, if they are already tilted towards warmth then you might be better off with Pass. I dont have first hand experience with Pass but have discussed with some audiophiles I trust.

I used to own Confidence C1 driven by the Parasound Halo A21 (preamp Primare PRE30). Decent match indeed, but perhaps not helpful enough info for you, since I have not any experience with other amps from list. Pass X250 should be better, relying on price difference vs Halo A21. Plinius 102 reportedly has some tublike mellow sound character, which might be not the best match with slightly darkish Confidence C1.

Top new ontopic info, a few days old. A friend of mine, C1 owner for some 5-6 years (which means he knows well what is he talking about), recently employed Krell KAV-400xi on C1, saying that cheapo Krell almost blown away both double pricier Classe CAP-2100 and exotic vintage Sansui Alpha 907 integrades. Particularly in bass area, among other parameters.

Hope this helps.