Best preamp combination with Hegel H30?

Hello,

Concerning the Hegel P 30, mentionned at the beginning of this post, there is a very sharp rise in volume around 10 o’clock on the volume, so it can be difficult to set up the volume with accuracy (too low or to loud). furthermore when you push up the volume with the rolling button, you can hear a slight distorsion in the loudspeaker.

The P30 is a good machine, but in my opinion, at its level of price it's not acceptable to have these defects.