Dynaudio C1 and Pass amp

Since you have the Signatures that amp should be OK. My Sigs worked just fine with an Octave V40SE (40 watts).

Kzhtoo - C2's aren't that heavy. When I had an in home demo I moved them around. About twice the weight of C1's and stands.

Me personally I think I would like to have a dyn speaker with the mids and highs of the C1's but the bass slam of the sapphires. Although that may not be a real balanced sound it could very well be interesting.