I've owned the C2's and currently the C4's. The NA Sales Manager for Dynaudio once told me he's heard the C2's sound quite nice with the ARC VT-100. I drive my C4's with a Plinius SA-102 (moderate power @ 125WPC in 8 ohms), which I preferred over a pair of powerful Sim Audio monoblocks.
Mind you, if you want to drive the C1's to concert level dB's, the ARC may fall a bit short in some cases, however, for normal / moderate listening levels, I think you'd be just fine.
Mind you, if you want to drive the C1's to concert level dB's, the ARC may fall a bit short in some cases, however, for normal / moderate listening levels, I think you'd be just fine.