I have the C1's currently set up in my living room with a complete tube setup and there is no problem filling the room up with sound with low distortion.
I am not that familiar with the Sapphires so I don't know if a tube amp will power them or not. I have also owned the contours and ran them on the same setup I am running with the C-1's and did not have a problem.
I am not that familiar with the Sapphires so I don't know if a tube amp will power them or not. I have also owned the contours and ran them on the same setup I am running with the C-1's and did not have a problem.