Feliks Euforia AE (Euforia (OV) and Euforia Evo are also worth to consider).
Focal himself choose this amp for showcasing the Utopia.
I have the Euforia AE myself paired with Utopia OG. I am listening now for 2 weeks and must say that it is not the best match imo because the mids are not that good articulated and to thin sounding and i feel the Utopia is not driven to the full potential. In case you go with the Euforia, then you need a preamp to explore what the Utopia is capable of.
The Utopia is to sensitive for the Euforia so that you loose a lot of dynamic range and can not even experience the tubiness and holographic attributes of this amp.
I use the Euforia as a preamp into Burson Soloist GT and vice versa, which drives the Utopia much better.
The results are Full thick midrange and a cohesive sound as it should be. I dont like the idea to use a pre amp because you loose some details, but it is what it is. I would like to go the direct way, from the DAC in to the head amp if possible.
Tbh, i am searching my own this tread for a good tube amp pairing with the Utopia.
Recommendations are highly welcome!
Edit: i must apologize for the post above bc the tubes on the Euforia were playing games with me.
As i sayid, i have the Euforia since two weeks and since 2 days ago the Euforia became shouty and was lacking base so i decided to hook it up to a preamp which improved the sound.
I red that the tubes can vary in SQ during the burnin process which i think i experienced.
Now the amp is back to normal and a good companion for the Utopia.
I also stay to my statement that there must be better amps for the Utopia bc it still has a richer and fuller midrange and a thicker base when hooked to a preamp.
Sorry for the created confusion.