I’ve had Focals and I own a Luxman 507ux, but not at the same time.
The Luxmans are excellent and very smooth performers so I’d highly recommend them with Focals.
As for detail retrieval you may want to look at your room. A good mix of diffusion and absorption around the speaker may help you more than a hardware change.
Diffusion between and to the sides of your speakers can bring out a lot of hall ambiance as well as improve imagery much more than a lot of hardware upgrades can.
Also, be careful not to fall into the "more details" trap. Audiophiles may chase these and end up with gear that has exaggerated treble or very ragged treble. The ear gets fooled by ragged frequency responses into thinking "I've never heard this before" Well, if you keep getting gear with ragged, but different responses you'll keep feeling like the next piece of gear has given you "more" but it's not "more" it's just different.