I have a pair of Focal speakers and I foudn them to be slightly on the leaner side of the neutral. However they are fast, articulate, dynamic, and can sound very very nice with right set of equipments.
I don't think you want to augment the sound by replacing the source. I believe the goal of the source is to get the music out of the medium as accurate as possible, without coloring any sound on its own.
Tweaks and placements will help getting balanced sound up to a point, but if you don't like the fundamental sound of the speakers you should consider getting a different pair. However there is no perfect solution. Richer sounding speakers often times are not as dynamic, or articulate, or extended.
I would rather recommend trying out different amps. Next to the speakers, the amps have the most variety in terms of technology being used and also the variety in the sound resulting from it.
I don't think you want to augment the sound by replacing the source. I believe the goal of the source is to get the music out of the medium as accurate as possible, without coloring any sound on its own.
Tweaks and placements will help getting balanced sound up to a point, but if you don't like the fundamental sound of the speakers you should consider getting a different pair. However there is no perfect solution. Richer sounding speakers often times are not as dynamic, or articulate, or extended.
I would rather recommend trying out different amps. Next to the speakers, the amps have the most variety in terms of technology being used and also the variety in the sound resulting from it.