dynuaudio c-1s in a small 10x12 room?/amppower?

What are you asking? Are you asking are the speakers are too small for the room and are either one of the Parasound amplifiers too much power for the speakers?

Do you own the Parasounds or are thinking of them?

The reason is simple how do you know that the combination will sound good?

In your case - C1s in a small room - there would be a problem, because they require placement away from the walls, especially from the back wall, because they have a rear bass-reflex port (I can afford this in my room, which measures 12 x 16,7). Therefore, I would recommend some fine monitors with front bass-reflex port. And do not exaggerate with the amplifier's power, 250 W/8 Ohms from A 21 is far enough (I run my C1s with 2 x 200 W/8 Ohms amplifier).

IMO,your room size is tough for the C1s to shine(small and almost square)Been there done that in a similar room.Room treatment will be a must.If you dont already own Parasound walk away from the table..I would suggest Pass labs X150.5,with the extra cash buy a nice sub and treat that room